Yaesu FT 201 Instruction Manual
Below you will find brief information for Transceiver FT 201. This instruction manual provides comprehensive guidance on the FT-201 SSB Transceiver, a high-performance device operating on amateur bands from 80 to 10 meters. It supports SSB, CW, and AM modes, offering features like VOX, a noise blanker, and a 25/100 kHz calibrator. The document covers installation, operation, frequency selection, transmitter tune-up, interconnections, and detailed block diagrams for understanding the transceiver's functionality.
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INSTRUCTION MANUAL FT 201 Fox Tango International http://www. foxtango.org YAESU MUSEN CO., LTD. TOKYO JAPAN Downloaded by RadioAmateur.EU TABLE OF CONTENTS GENERAL DESCRIPTION oo... ciccceccccssssccceessoeccsssescecssesecsssusscossecsrsceesersscaseuscsnsevesseressenseseessesens 1 SPECIFICATIONS ...ucceesnssssssssneessnnenessnnnonsennnnennnnnssnnsnnsannnnnntsnnssnnensnnnensennnananssnnsnsnsunsnssentnennnnnennn 2 INSTALLATION — General — Base Station Installation — Mobile Installation — Antenna INTERCONNECTIONS ooeeccccccccccccscssssccecensseeceseceeusesesccunesseessueeessentetecuegeeceseessseccctsegeasensceasanesesees 4 PH ORR HERRERA EERE EEE REE ETE TEER TAT EERE — Initial Check — Frequency Selection — Receiver Calibration Transmitter Tune-Up — SSB Operation — CW Operation — AM Operation BLOCK DIAGRAM ............ нина ини ни нинининия 11 — General — Receiver — Transmitter — Common Circuit — Power Supply ALIGNMENT oueieccccccccssssesecccccccnssssscecceuccaeenssecceccceaueesecseccssueasseesecssseeeuensssecceceeasagaseeesevecserseessecery 15 — General — Equipment Required — Alignment Procedure VOLTAGE CHART ...........eeesssssesesenennennenoneneorenanossosnenonnnensnossnannnensonssnnessenpensneensensnnsssenssennanennansenene 22 Ц Fox Tango International http://www. foxtango.org GENERAL DESCRIPTION The model FT-201 SSB Transceiver is a precision built, compact, high performance transceiver utilizing ad- vanced design providing SSB (USB or LSB selectable), _ СУ and AM modes of operation. The transceiver oper- ates. at an input of 260 watts SSB, 180 watts CW and 80 watts AM, on all bands from 80 to 10 meters. All circuits, except the transmitter driver and linear am- plifier, are transistorized. Plug-in modules are utilized, permitting easy maintenance. The transceiver is self-contained, requiring only an antenna and an AC mains for home, portable or mobile operation. The transceiver may be operated from 100/110/117/200/220/234 volt AC sources when appro- priately wired but is normally supplied for 117 volt AC and 12 volt DC operation. The two-way solid state power supply is an integral part of the unit. Two power cords are provided with the transceiver. Selection of AC or DC power source is automatically made when the proper line cord plug is inserted into the receptacle on the rear panel. For mobile operation, a separate switch is provided on the front panel to turn off the tube heaters while in the receive mode. In this mode, the transceiver draws 0.5 amp less than your auto dash lights. Features such as VOX/break-in CW with sidetone, 25 and 100 KHz calibrator, noise blanker, and 15 MHz WWV, are built-in. In addition, a dual VFO adaptor, crystal control adaptor, speaker and clarifier are integral parts of the unit. Provision is made for the installation of a 600 Hz crystal filter for the expert CW-DX operator. The CW filter is selected automatically when the trans- ceiver mode switch is placed in the CW position. The entire transceiver weighs approximately 14 kg and, is 340 m/m wide, 153 m/m high, and 285 m/m deep. Construction is of heavy gauge steel which provides an extremely rugged package, virtually immune to the effects of vibration and shock. The SP-101PB/277PB, combination phone patch and ex- ternal speaker, is a valuable optional accessory for base operation. The unit features an elliptical type speaker for high quality voice reproduction. Other optional equipment include the FV-201 external VFO and mobile mounting bracket. SPECIFICATIONS Frequency Range 3.5 — 29.7 MHz amateur bands (80 thru 10 m) 15 MHz (WWV) receive only Type of Emission USB or LSB (selectable) CW, AM Power Input SSB 260 watts PEP CW 180 watts 50% duty cycle AM 80 watts (slightly lower on 10 meter) Carrier Suppression 50 db Sideband Supression 50 db at 1000 Hz Spurious Radiation Down 40 db or better Transmitter Frequency Response 300 Hz — 2700 Hz +3 db Distortion Products Down 30 db or better Antenna Output impedance 50 — 75 ohm unbalanced Frequency Stability Less than 100 Hz drift in any 30 minute period Sensitivity 0.3 ду S/N 10 db Selectivity SSB, AM, CW 2.4 KHz at 6 db 4.0 KHz at 60 db CW (with optional filter) 600 Hz at 6 db 1.2 KHz at 60 db Audio Output 3 watts at 4 ohms Power Consumption AC Receive 45 watts Transmit 350 watts max. DC 12 V Standby 0.6 amp Transmit 21 amp max. Dimensions 340 m/m wide, 153 m/m high, 285 m/m deep Weight Approx. 14 kg. INSTALLATION GENERAL The transceiver is designed to provide a complete, single unit installation, for fixed, portable, or mobile opera- tion. Two prewired plugs are furnished with the unit for AC or DC voltage operation. This system provides the flexibility required for various installations and allows rapid change from fixed to mobile operation. BASE STATION INSTALLATION The transceiver is designed for use in many areas of the world using supply voltages that may differ from the operator’s local supply voltage. Therefore, before con- necting the AC cord to the power outlet, be sure that the voltage marked on the rear of the transceiver agrees with the local AC supply voltage. If not, refer to the power transformer connections on Page 14 CAUTION PERMANENT DAMAGE WILL RESULT IF IMPROPER AC SUPPLY VOLTAGE IS APPLIED TO THE TRANSCEIVER. The transceiver should be connected to a good ground. The ground lead should be connected to the terminal marked GND located on the rear panel of the transceiver. MOBILE INSTALLATION The transceiver will operate satisfactorily from any 12 volt negative ground battery source by connecting the DC power cord to the rear panel receptacle. For mobile installation, a special mobile mount is available from your dealer. A location should be selected clear of heater or air conditioning ducts. No special mount- ing precautions are necessary if adequate ventilation space is available. A minimum of two inches of air space above the cabinet top, and on all sides, is recommended to allow proper air flow around the cabinet. Never stack other units above or below the cabinet since the accumulated heat from both units could cause damage to the transceiver. The transceiver requires an average of 14 amps on transmit and 24 amps on voice peaks. The fuse in the DC power cable should be rated 20 amps. When making connections to the car battery, be certain that the RED lead is connected to the positive (+) terminal and the BLACK lead to the negati = (-) terminal of the battery. Reversed connections : ould damage the transceiver. The BLACK lead shouli run directly to the negative terminal of the batte у. Using the car frame as a negative connection с: connecting the positive lead at a point such as the ignition switch, places noise generating devices in the same current path as the transceiver and fails to take advantage of the filtering action of the battery. The power cable should be kept away from ignition w “es, be as short as possible to minimize voltage drop anc to provide a low impedance path from the transceiver 10 the battery. Prior to operating the transceiver in a mobile installa- tion, the voltage regulator setting should be checked. In many vehicles, the voltage regulation is very poor and in some cases the regulator may be adjusted for an excessively high charging voltage. As the battery and regulator age, the maximum voltage while charging can increase to a very high level which is not only detrimental to the battery but could cause damage to the transceiver. The transceiver is designed to operate from a source voltage range of 11 to 14 volts. It is necessary to carefully set the regulator so that the highest charging voltage does not exceed 14 volts. The transceiver should be switched “OFF” when vehicle is started to prevent voltage transient from damaging the power supply transistors. ANTENNA CAUTION NEVER TRANSMIT WITHOUT HAVING PROPER ANTENNA OR DUMMY LOAD CONNECTED TO THE TRANSCEIVER. The transceiver is designed for use with resonant antenna having a resistive load impedance of 50 - 75 ohms. The antenna is usually the most critical part of a Station installation, Results, both in receiving and transmitting, will depend on how well the antenna is installed and adjusted. Any of the commercial antenna systems designed for use on the high frequency amateur bands may be used with the transceiver. provided the input impedance of the antenna system is within the capability of the transceiver pi-matching network (50 75 ohms). If a tuned open wire transmission line, or a long wire antenna is used, a suitable antenna tuner must be used between the antenna and the transceiver to provide an impedance match between the unbalanced coaxial output of the transceiver and the balanced open-wire feeder or long wire. For mobile operation, most of the commercially available antennas on the market will give good results when the coaxial cable is securely grounded to the chassis of the vehicle at the antenna mount. Adjust the antenna length carefully for minimum SWR after installation. INTERCONNECTIONS FV-201 FT-201 SP-101P8/277PB PATCH o о SP ST o ANT АСС EXT VFO 4/80 LIN Hi. Z | WT i PIN 4 = — En FL2100B/2277B COAX 7 EN TELEPHONE LINE RFOUTGNO RF IN EALCERY O o | og ANTENNA Fig. 1 FTV-650B/FTV-250 (6/2 METER TRANSVERTER) FTV-650B/FTV250 FT201 HF ANT АМТ POWER INPUT! RF OUT ANT ACC RCV Oh: | 7 Q Q VHF ANTENNA | АМТЕММА 17 7 2 3 3 ; 4 5 5 6 6 7 7 9 nc——i8 NC 111 Fig. 2 CONTROLS AND SWITC The transceiver has been specifically designed for ease of operation and versatility. All controls have been preset at the factory. Several of the controls are unusual in operation, and improper adjustment may result in signals of poor quality. 4 © ® Fig. 3 (1) TUNING KNOB The tuning knob located below the main dial window and in combination with the band switch, determines the actual frequency of operation. The VFO drive mechanism consists of a precision, spring loaded, split gear system in combination with a planetary drive unit to provide zero backlash at a low tuning rate. Each revolution of the tuning knob results in a frequency change of 16 KHz as indicated in the window above the knob. (2) BAND SWITCH The BAND switch is used to select the desired band for receiving and transmitting. The 10 meter band is divided into four bands which are selected separately when the MAIN BAND switch is set to the 10 meter band. For WWV reception, the MAIN BAND switch is set to 14.0 MHz band and the subswitch to the WWV position to receive WWV or JJY signals on 15 MHz. (3) PLATE Tunes plate circuit of the final amplifier. (4) LOAD Tunes the output circuit of the pi-network to match antenna and feed line impedance. | (5) MIC GAIN/CARRIER The MIC GAIN and CARRIER controls are mounted on concentric shafts. The MIC GAIN control (inner The various front panel controls and their functions are described in the following section. Be certain that you understand thoroughly the function of each control before operating the transceiver. knob) varies the audio level from the microphone amplifier stage. The control has sufficient range to permit the use of any high impedance crystal or dynamic microphone. The CARRIER control (lever control) varies the amount of the carrier in the CW, AM and TUNE modes of operation. For SSB operation, the CARRIER control should be set to fully counterclockwise posi- tion. The both MIC GAIN and CARRIER controls have maximum gain with the control set at 10 (fully clockwise position). (6) PRESELECT The PRESELECT control pretunes the signal circuits for both transmit and receive. (7) CLARIFIER The CLARIFIER control provides a means for tuning the receiver frequency +3 KHz of the transmitting frequency. Thus, it is possible to set the pitch of the voice you are receiving to the most readable point without affecting your transmitting frequency. Its use is particularly valuable in “net” operation when several participants may be transmitting slightly off frequency. The CLARIFIER control may be switched off and the receiver locked to the transmitting frequency by setting the CLARIFIER control to the OFF position. Normally, you will want to keep the CLARIFIER in the OFF position until the initial contact is made. The CLARIFIER control may then be used to zero-in and correct any drift on the received signal. The red lamp lights up when the CLARIFIER is on. (8) MODE SWITCH The MODE switch is a five-position switch. This switch is used to select the mode of operation, LSB, USB, CW, AM or TUNE. (9) AF GAIN The AF GAIN control (inner knob) adjusts the audio output level at the speaker and phone jack. Clockwise rotation increases the audio output. (10) RF GAIN The RF GAIN control (lever control) varies the gain of the receiver RF and IF amplifier. Maximum sensitivity _ is obtained with the control set at 10 (fully clockwise). (11) VOX GAIN The VOX GAIN control is used to adjust the threshold level of VOX (Voice Control Operation). At fully counter-clockwise position (MOX), it locks transmitter “ON” and must be rotated to the PTT/STBY position for receiver recovery. At the PTT/STBY position, the transmitter is activated when the PTT switch on the microphone is pushed. For VOX operation, slowly advance the VOX GAIN control until the transceiver transmitter is activated by speaking normally into the microphone. (12) POWER The main switch turns transceiver “ON” for both AC and DC operation. (13) HEATER With this switch in the down position, the transmitter tube heaters are turned off. This reduces battery drain to 0.5 amp and thus permits long periods of listening without excessive battery drain. Pushing the switch to the upper position provides supply voltage to the tube heaters. After 30 second warm-up, the transmitter is ready for operation. This switch operates in both DC and AC modes. (14) METER SWITCH This switch selects the meter indication. When pressed down, it shows relative power output and at release position it shows the cathode current of the final tubes. In the receive mode, the meter works as S-meter regardless of the METER switch position. | (15) AGC SWITCH This switch selects AGC time constant, either fast or slow. | (16) МВ (Noise Blanker) SWITCH In the down position, the noise blanker is placed in the circuit and eliminates noise pulses caused by auto ignition. (17) ATT (Attenuator) SWITCH | This switch provides the insertion of a 20 db attenu- ator into the incoming signal path to minimize cross modulation which may be caused by extremely strong local signals. | (18) CALIB (Calibrator) SWITCH The 100 KHz/25 KHz crystal oscillator is used to calibrate the receiver when this switch is pushed down. The 25 KHz generator switch is located under the top cover. (19) CALIB CONTROL This control adjusts the VFO frequency to calibrate against 100 KHz/25 KHz marker signal. (20) VFO SELECT SWITCH This switch provides selection of the companion external VFO or two fixed crystal oscillator positions. Normal operation of the transceiver VFO requires that the switch be placed in the “INT” position. When the internal VFO is on work, the red LED light turns on. INT: The transceiver internal VFO controls both transmitter and receiver fre- quencies. The external VFO controls transmitter frequency and the internal VFO controls receiver frequency. The external VFO controls receiver fre- quency and the internal VFO controls transmitter frequency. The external VFO controls both trans- mitter and receiver frequencies. Provides crystal control of the trans- ceiver within the range of the bands installed in the unit. Proper crystals may be installed on the PB-1386 crystal oscillator board for crystal controlled operation. RX INT: TX INT: EXT: СН] & CH2: (21) PHONES Headphone may be inserted in this jack for private listening. The internal speaker is disconnected when the headphone plug is inserted. Any high quality headphone may be used. Fig. 4 (22) MIC Microphone Jack. Four pin connector is used for microphone input, and push to talk relay actuation. Fig. 5 ©) > © = (1) GND Ground connection. (2) RF OUT The signal frequency output from the driver stage may be obtained at this jack for use of optional equipment. (3) АМТ. Coaxial connector for a 50 — 75 ohm antenna. (4) RCV ANT An auxiliary receiver antenna connection (such as our FR-101) may be made through this jack. (5) LAMP FUSE This lamp fuse protects the RF amplifier transistor receiver front end from damage which may be caused by an extremely strong local signal. (6) FAN Power outlet for cooling fan. (7) ACC (Accessory Socket) Accessory socket provides access to transceiver operat- ing voltages and relay contacts. The plug should always be inserted when the transceiver is in use. (8) FUSE | The fuse holder requires a 5 amp fuse for 117 volt or a 3 amp fuse for 220 volt operation. For DC operation, a 20 amp fuse is used in the fuse holder connected to the DC power cord. Fig. 6 (9) POWER The power receptacle. Both AC and DC cords are supplied with the transceiver. (16) EXT VFO Connection for an external VFO. (11) KEY Key jack for CW operation. ==> Ca a E KEY JACK — Ä KEY (12) SP (Speaker) Audio output is provided at this jack for an external speaker with an impedance of 4 ohms. (13) PTT (Push-To-Talk) This jack may be used for external actuation of the transmitter. As an example, a foot switch may be inserted into this jack to provide remote control of the transmitter PTT relay. (14) PATCH Speech input terminal for phone patch connection. Impedance is 50 K ohms. OPERATION The tuning procedure of the transceiver is not com- plicated, however care should be exercised when tuning to insure peak performance of the equipment. The following paragraphs describe the procedure for re- ceiver and transmitter tuning. INTIAL CHECK Before connecting the transceiver to a power source, carefully examine the unit for any visible damage. Check that all modules and crystals are firmly in place and that controls and switches are operating normally. Be sure that the voltage specification marked on rear panel matches the supply voltage. FREQUENCY SELECTION The main tuning dial is color coded with the band selector switch for proper frequency read out. When the band selected is marked in white, the white numbers on the main tuning dial are read. When the band selected is marked in green, the green numbers on main tuning dial are read. The main tuning dial is marked in 25 KHz increments between each 50 KHz segment. This provides a coarse frequency setting within the band. The dial skirt surrounding the tuning knob is marked in 1 KHz increments and provides for fine settings of the _ transceiver operating frequency. Following the example shown ( Figure 8 ), familiarize yourself with the relationship of the main and skirt dial frequency read out. RECEIVER CALIBRATION Preset the controls and switches as indicated below: VFO Selector INT (internal) VOX GAIN | PTT POWER ON (upper position) RF GAIN Maximum (fully clockwise) AF GAIN As required BAND Desired band MODE Desired mode _ TUNING 100 KHz point PRESELECTOR 12 o’clock position CLARIFIER OFF RF ATT OFF CALIBRATOR ON To calibrate, set the TUNING control to the 100 KHz point on the dial nearest the desired frequency. Tune the PRESELECTOR for maximum S-meter deflection. Tune the transceiver to the 100 KHz calibrator signal for zero beat. Two signals may be heard near the 100 KHz point. One of these is a signal feeding through the IF stages. Always calibrate to the stronger of these two signals. To calibrate, set the skirt vernier dial to the zero position. Rotate the CALIB knob near the tuning knob and zero beat against the 100 KHz marker signal. The transceiver must be calibrated when changing mode of operation: LSB, USB, AM or CW. Move the calibrator switch under the top cover to the 25 KHz position and note that the calibrator signal can be heard at every 25 KHz point. The calibrator switch should be in the OFF position in normal use of the transceiver. For bands 40-20-15-10A-10C, read the white scale on main dial. The setting shown in the example would then be 132.5 KHz plus the starting band edge frequency in MHz. For example, on 40 meters the frequency would be 7.1325 MHz. On 20 meters, 14,1325 MHz, etc. | For bands 80-10B-10D read green scale dial. Settings shown in the example would then read 632.5 KHz. For example, on 80 meters the frequency would be 3.6325 MHz, on 10B, 28.6325 MHz, etc. 100 600 150 650 100kHz Window 30 $0 AAA } kHz/10kHz Window N Fig. 8 TRANSMITTER TUNE-UP The following tune-up procedure must be performed prior to selection of desired operating mode: LSB, USB, CW, or AM. See the paragraphs relating to the specific mode after basic transmitter tune-up. Connect a dummy load or matched antenna to the coaxial fitting on rear panel, and preset controls as follows: POWER OFF HEATER ON MODE TUNE CARRIER O (fully counter-clockwise) BAND Desired band TUNING Desired frequency PRESELECTOR 12 o’clock position PLATE Deisred band segment LOADING To position shown in Table 1 METER — IC VFO SELECT INT VOX GAIN РТТ. LOADING POSITIONS ‚ BAND LOADING 80 5 40 5 1/2 20 3 1/2 15 3 | JOA 4 | 10B 4 10€ 4 | 10D 4 Table I NOTE: These loading positions are nominal. Slight variations from the positions shown are to be expected. With the transceiver turned on, allow 60 seconds for warm-up of the transmitter tubes. Be certain that accessory plug is in the accessory socket since the heater voltage to the final tubes is supplied through a jumper between pins | and 2 of the accessory plug. Set the VOX GAIN switch to MOX position. The meter will now read the final amplifier idling cathode current. This should be set at 60 mA with the BIAS control, VR1, located under the top cover. Return the VOX GAIN switch to the PTT position. 1. Pre-Tuning (1) Adjust the PRESELCT for maximum receiver noise level. Place the VOX GAIN switch to the MOX position. Rotate the CARRIER control until meter rises just above the normal idling current (60 mA) Adjust the PRESELECT for a maximum meter reading. (Caution: if the meter reading exceeds 100 mA, reduce the CARRIER control). Rotate the PLATE control for a minimum meter reading. (Plate Dip) (2) (3) (4) (5) (6) Return the VOX GAIN switch to the PIT posi- tion. The transmitter is now pretuned to the desired CAUTION EXCEEDING THE TIME LIMITS NOTED DURING | FINAL TUNING MAY RESULT IN DESTRUCTION OF FINAL OUTPUT TUBES. frequency. Final peak tuning is accomplished by carefully following the final tuning procedure. 2. Final Tuning | Final peak tuning utilizes the meter in the relative power output position (P.O.). A fuli transmit power, the meter will read approximately one-half to two- thirds of full scale into a matched antenna load. If during final tune-up it is noted that the meter indication exceeds full scale, discontinue tune-up. Off scale meter indications are the result of reflected RF due to high VSWR and corrective action should be taken before attempting any further final tune-up. (1) Set the METER switch to P.O. position. rotate CARRIER control fully clockwise to position 10. Momentarily set the VOX GAIN switch to MOX (10 second maximum), and rotate the PRE- SELECT control for a maximum meter reading. Return the MOX switch to the PTT position. Momentarily set the VOX GAIN switch to MOX (10 second maximum) and increase or decrease the LOADING control for a maximum meter reading. Return the MOX switch to the PTT position. Momentarily set the VOX GAIN switch to MOX (10 second maximum) and increase or decrease the PLATE control for a maximum meter reading. Return the MOX switch to the PTT position. Repeat steps (3) and (4) until a maximum meter reading is obtained. Set the METER switch to the IC position. Rotate the PLATE tuning control slowly to assure that maximum power output occurs at a plate current dip. (2) (3) (4) (5) (6) The transmitter is now tuned for maximum output. Turn the CARRIER control fully counter-clockwise to the zero position. Return the METER switch to the IC position and the MODE switch to the desired operating mode, NOTE: Moving the VOX GAIN switch to the MOX position in the above steps may be eliminated by simply operating the microphone PTT switch when a microphone is connected to the transceiver. SSB OPERATION After completion of the tuning procedure, set the MODE switch to LSB or USB. Set the VOX GAIN switch to the PTT position and advance the MIC GAIN control until the red light marked ALC starts to flicker when speaking normally into the microphone. For VOX operation, advance the VOX GAIN potenti- ometer until your voice actuates the transceiver. Set the ANTITRIP potentiometer to the minimum point that prevents the speaker output from tripping the VOX. Do not use more VOX gain or ANTITRIP gain than necessary. Adjust the DELAY potentiometer under the top cover for a suitable release time. NOTE: When the meter is set to IC, voice modulation peaks will indicate 150 — 200 mA. Actual peak current, however, is approximately 2 times the indicated value. CAUTION CARE MUST BE TAKEN TO AVOID EXCESSIVE DRIVE TO PREVENT SPURIOUS RADIATION. MAXIMUM KEY DOWN CURRENT SHOULD BE KEPT WITHIN 330 MA FOR THE BANDS UNDER 15 METER AND 280 MA FOR 10 METER BAND. CW OPERATION Upon completion of final tuning, set the MODE switch to the CW position and insert a key plug into the jack marked “KEY” on rear panel of the transceiver. The power output from the transmitter is determined by the CARRIER control position. The operator may select any power output desired by simply rotating the CARRIER control within the limits of its range from zero to ten. The transceiver may be operated either manually or break-in by setting the VOX GAIN switch to either MOX (manual) or VOX (break-in) for the desired mode of operation. The sidetone level may be adjusted with VR2 on AF unit under the top cover, for the desired level. NOTE: Insertion of a key plug automatically discon- nects the bias supply to the PA tubes. Therefore, with the key plug inserted, final amplifier bias current will not be indicated when meter is in the IC position. AM OPERATION AM operation of the transceiver is accomplished by setting the MODE switch to the AM position and inserting the proper amount of carrier with the CAR- RIER control. After completion of the basic transmitter tune-up, place the MODE switch in the AM position and rotate the CARRIER control until the meter reads 150 mA in the IC position. While speaking into the microphone normally, increase the MIC GAIN until the meter indicates a very slight movement with voice peaks. Care must be taken in adjusting MIC GAIN control to assure that the CARRIER control is not rotated causing an increase in carrier level. Do not exceed 150 mA meter indication during AM operation or damage to the final amplifier tubes may result. 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The receiver and transmitter operate in a single conversion configuration utilizing a premix heterodyne technique which greatly reduces transmit and receive signal distortion. RECEIVER The incoming signal from antenna is led through the antenna relay, Jamp fuse and a 9 MHz trap coil to gate | of the RF amplifier Q5. 3SK40M. dual gate MOS-FET. The AGC (Automatic Gain Control) voltage ıs applied to gate 2 of Q2 to control the gain of this stage in order to avoid overloading in the following stages. The amplified signal from QS is then fed into gate | of the receiver mixer Q4, 35K40M, where the incoming signal is mixed with the signal applied to gate 2 of Q4, from the premix circuit. This arrangement produces a 9 KHz IF signal at the output of Q4. The 9 MHz IF signal is fed through T101 and T102, to the first IF amplifier Q1, 2SC372Y, and amplified by О! and Q2, 2SC784R. The amplified signal passes through the crystal filter and is amplified by Q9, 2SC373, and Q10, 2$С373. The amplified signal is fed to the ring demodulator, D18 through D21, 181007, for CW and SSB reception. The carrier signal is also fed to the ring demodulator from the carrier oscillator unit for SSB and CW detection. The output from Q10 is amplified by Q11, 25K19GR, and applied to the AM detector D17, 151007. The detected audio signal is fed through mode switch and AF GAIN control to the first audio amplifier Q10, 2SC372Y. The amplified audio signal is further ampli- fied by an audio power amplifier Q11, AN214, which delivers 3 watts audio signal to the speaker through pin 7. A part of the signal passed through T101 and T102 is amplified by the noise amplifier Q3, 2SC372Y, and 04, 2SC784R, in the IF unit. The amplified noise signal is applied to the bias rectifier 1S1555. The rectified DC voltage is charged to C20 and acts as the bias voltage to DS, 181555. DS conducts when the noise pulses exceed the bias voltage in the output from 05. The output from DS is amplified by pulse amplifier Q5 and Q6, 2SKI9GR. The noise blanker driver Q7, 2SC372Y conducts to switch a noise blanker gate diode Di, 151555, which shunts the output of Q2 to ground whenever a noise spike exists. The switching level is adjusted with the noise blanker threshold control, VRI. А part of the signal amplified by Q11. 2SKI9GR. in IF unit, is rectified by AGC rectifier DI4 and DIS. 151555. The DC voltage is amplified by AGC ampli- fier, Q12 and Q13, 2SC372Y, and controls the gain of IF amplifier Q1, Q9, and RF amplifier Q5, auto- matically. The DC voltage at the emitter of Q13 is used for a meter deflection proportional to the input signal strength. The meter is calibrated in the customary “5” units. A meter indication of 5-9 represents approximately 50 micro volts at the antenna terminal. TRANSMITTER The speech signal from the microphone is fed to the first speech amplifier Q1, 2SK19GR, from pin 10. The input impedance of the Mic amplifier is 50 Kilo ohms. The signal is controlled in amplitude by the MIC GAIN control and is fed to an integrated circuit Q2, LD3141. where the signal is amplified and delivered to the modulator through pin 1. For SSB operation, the speech signal is fed to the ring modulator DI through D4, 181007. The carrier signal of 9001.5 KHz for LSB or 8998.5 KHz for USB is also applied to the ring modulator to produce a 9 KHz DSB (double side band) IF signal. This IF signal is amplified by Q6, 25K19Y, and is delivered to IF unit through pin 2. The signal is then amplified by IF amplifier Q14, 25C372Y, and is ted through the crystal filter where the unwanted sideband is rejected. This signal is then applied to the second IF amplifier 08, 2SC373, in IF unit. The amplified signal is fed to the transmitter mixer Q7, 2SC784R, where the signal is mixed with the heterodyne signal from premix circuit to produce the transmitting frequency signal. For AM and CW, an 8999.3 KHz signal from the carrier oscillator is fed to the AM modulator 05. 2SC372Y, and modulated by the speech signal fed through pin 8. Q5 operates as a buffer stage for CW operation. This AM or CW signal is amplified by 08. 2SC373, and fed to the transmitter mixer 07. 2SC784R. The transmitter mixer output signal is fed to the grid of transmitter driver VI. 12BY7A, where it is amplified to a level sufficient to drive the final linear amplifier V2 and V3, 6JS6C. Neutralization of the power amplifier is accomplished by feeding back a small amount of the output through TC1 to the cold end of the driver plate coil. The final output from V2 and V3 is fed through a pi-network to the antenna. With the METER switch in the IC position, the meter is connected to the cathode of final tubes through shunt resistor R29, and measures the total cathode current of the final tubes. The ALC (automatic level control) voltage is obtained by rectifying a voltage across R23 with ALU diodes, Dl and D2, 181555. and controls the gain of the first transmitter IF amplifier. Q6. to prevent any caused by over drive. The ALC voltage distortion is amplified py 07. 2SKI9Y. and 08. 2SC372Y. to illuminate the ALC LED on front panel in order to monitor the ALC action. COMMON CIRCUIT (1) Premix Circuit The FT-201 transceiver utilizes a unique technique of premix to minimize the signal 1s premixed with a distortion, Phe YED signal local crystal oscillator signa! and is fed to the mixer stages of the transmitter and receiver. Crystal oscillator Q2, 2SC372Y, produces & heterodyne signal selected by the band switch. Th signal is fed to the double balanced mixer GI MC1496G, where the signal is mixed with a ne from the VFO. The VFO module board is installed in the VFO chassis. The VFO oscillator ОТ, 2853 oy. produces a signal of 5 through 5.5 MHz. The oscillator output is fed to the premixer QI, MC1496G, through a bufter amplifier Q2, 2SC372Y. For 80 meter. the VFO signal is directly coupled to the transmitter and receiver mixer in the RF unit. en Varactor diode Dl, 152236, in series with capacito CIS. is switched into the circuit by the CLARIFIE! switch to shift the VFO frequency for receiver offset tuning. The premixer output signal is fed to transmitter and receiver mixer through a band pass filter and amplifier Q1, 25K19GR, Q2, 2SC784R, and 03. 25C784R, in the RF unit. 7 1 -, rt 41, tao PREMIX FREQUENCY CHART BAND XTAL PREMIXER OUTPUT 80 — 5.6 — 5.5 MHz 40 21.5 MHz 16.0 — 16.5 20 28.5 23.0 — 23.5 JIY 29,5 24.0 15 35.5 30.0 — 30.5 10A 42.5 37.0 — 37.5 10B 43.0 37.5 -- 38.0 10€ 43.5 38.0 — 38.5 10D 44.0 38.5 — 39.0 Table 2 (2) FLA Oscillator In addition to normal VFO operation. two crystals may be selected for crystal controlled operation with the selector switch located on the front panel of the transceiver. Crystal oscillator Q1. 2SKI9GR., oscillates at the crystal frequency and its output is fed to the premixer. MC1496G, through the VFO select switch. The crystal frequency may be shifted slightly by the CLARIFIER control. A red lamp lights up when the CLARIFIER control is in the “ON” position. {3} Carrier Oscillator ine carrier oscillator functions at either 8998.5 KHz tor USB or 9001.5 KHz for LSB, DEPENDING UPON WHETHER GI, 25C372Y. ог 92, 2SC372Y, is selected by the MODE switch. The output from the oscillator is to the buffer amplifier Q4, 25C372Y, and then to the balanced ring modulator for transmit and also to the ring demodulator for receive. For AM or CW operation. an 8999,3 KHz crystal controlled oscillator 95. 25C372Y, operates to produce the carrier signal. in CW reception, QI, oscillates at 8998.5 KHz siunal tor a beat signal. All oscillators are disabled for AM ted unit contains the 100 KHz/25 KHz marker generator. A crystal controlled oscillator QI, 2SC735Y. oscillates at 100 KHz internals for dial calibration. A trimmer capacitor, TC1, is used to calibrate the 100 KHz against WWV or JJY on 15 MHz. The output from the oscillator is fed to a 25 KHz multivibrator Q3, MFC6020, which generates a marker signal every 25 KHz. The multivibrator operates when the 100 KHz/25 KHz switch is placed to 25 KHz position. The calibrator output is fed to the buffer amplifier Q2. 28C735Y, to the receiver antenna circuit through pin 2 of PS-3, (5) VOX Circuit The signal from the first microphone amplifier is coupled through the VOX GAIN control potentiometer to tne VOX amplifier, Q6, LD3141. The signal is amplified by Q6 and is fed to the VOX rectifier DS nd D6, 151555. The negative DC output voltage of rectifier is applied to a DC amplifier Q8. ЭСК, causing the VOX relay controller Q9, 373, to conduct and actuate the VOX relay. po a The ANTITRIP circuit provides a threshold voltage to prevent the speaker output from activating the trans- ceiver into the transmit mode. The receiver audio output from Q11 is connected through the ANTITRIP control, VR3, to the antitrip amplifier Q7. 2SC372Y, and fed to rectifiers D3 and D4, 151555. The DC voltage from the rectifiers, is connected to the gate of (38, and thus reduces the gain of the VOX control amplifier and provides the necessary antitrip threshold. The ANTITRIP control, VR3, adjusts the value of the antitrip voltage threshold so that the speaker output will not produce an excessive positive DC output from : the VOX rectifier that exceeds the negative DC output from the ANTITRIP rectifier and thus causing the control transistor to actuate the VOX relay. When speaking normally into the microphone, the positive voltage will exceed the negative antitrip voltage and actuate the relay. VRS provides a coarse adjustment for relay sensitivity. Relay hold time is determined by DELAY control, VR4. (6) Sidetone Oscillator The tone oscillator Q5, 2SC373 in the audio unit oscillates at approximately 800 Hz. The tone output is controlled by the keying circuit and coupled through the SIDETONE LEVEL control, VR2, to the receiver audio amplifier, Q11, for sidetone monitoring in CW operation. The output from Q5 is also coupled to the VOX amplifier, Q6, for break-in CW operation. POWER SUPPLY The power supply is designed to operate from either 100/110/117/200/220/234 volts AC or 12 volts DC (negative ground). Inserting the appropriate power plug into the rear panel receptacle makes the necessary connections to operate the supply in either the AC or DC modes. The power plug wiring is shown in Fig. 10 NOTE: THE PLUG NUMBERING MAY DIFFER DE- PENDING ON THE MANUFACTURER. BE SURE USE AN EXACT YAESU CON- NECTOR OR BE SURE TO OBSERVE ANY PLUG WIRING DIFFERENCES. BLACK DC | 13.8V FUSE RED 20A When the transceiver is operated from a 12 volts DC power source, transistors О] and Q2, 2SB206. func- tion as a low frequency (approximately 80 Hz) oscillator to provide AC to the power transformer. Starting bias for the oscillator is obtained from divider resistors Rl, R2, and КЗ. The power transformer has two primary windings which are connected in series or in parallel, for 100 through 234 volts operation. The primary wirings are shown in Fig. 11 for various supply voltage. For AC operation, 10.5 V AC voltage at power transformer secondary is rectified by Di and D2. VO6B, for the transistor supply voltage. The 600 volts DC power amplifier plate voltage is supplied from the bridge connected rectifier, DS through 012, 10D10. The 300 volts DC driver plate voltage is obtained from the center tap of the transformer winding in this circuit. The 160 volts DC screen grid voltage is obtained from D3, 181943 and the -100 volts DC bias voltage is obtained from D4, 151943. A highly regulated voltage is obtained from Q4. MFC6034A in AF unit, for use with the VFO. LOOV| FUSE OV) FUSE НРУ, | Fuse HOLDER HOLDER : i MOLDER FUSE HOLDER FUSE HOLDER FUSE HOLDER Ä IOOV | | lo : о | | POWER TRANSFORMER CONNECTIONS Fig. 11 ALIGNMENT | WARNING DANGEROUS VOLTAGES ARE PRESENT. USE EX- TREME CAUTION WHEN WORKING ON THE TRANSCEIVER WITH COVERS REMOVED. DIS- CHARGE ALL CAPACITORS BY SHORTING TO GROUND WITH AN INSULATED SCREW DRIVER. | CAUTION | NEVER OPERATE THE TRANSCEIVER IN THE ‘TRANSMIT MODE WITHOUT A MATCHED! ANTENNA OR ADEQUATE DUMMY LOAD. THE POWER AMPLIFIER TUBES AND PI-NETWORK! COMPONENTS CAN BE DAMAGED IF THE TRANS- ¡CEIVER IS OPERATED WITHOUT THE PROPER: [LOAD TERMINATION. | „| GENERAL The transceiver has been carefully aligned and tested at the factory and, with normal usage, should not require other than the usual attention given to electronic equipment. Service of replacement of a major com- ponent may require subsequent realignment, but under no circumstances should realignment be attempted unless the operation of the transceiver is fully under- stood, and the malfunction has been analyzed and definitely traced to misalignment. Service work should only be performed by experienced personnel, using the proper test equipment. PP, VR, PP, УК. Tios а. PP XF, Tin Tio | IF UNIT(PB- 1382) EQUIPMENT REQUIRED (1) КЕ Signal Generator: Hewlett-Packard Model 606A, or equivalent with one volt output at an impedance of 50 onms and a frequency coveraye to 30 MHz. (2) Vacuum Tube Voltmeter (VTVM): Hewlett- Packard Model 410B, or equivalent УТУМ with an RE probe good to 40 MHz. (3) Dummy Load: Waters Model 334A or equivalent 50 ohms nonreactive load rated at 300 watts average power. (4) AF Signal Generator: Hewlett-Packard Model 200AB, or equivalent. (5) A general coverage receiver covering the frequency range from 3 to 30 MHz with a 100 KHz calibrator. NOTE: The following alignment procedures should be down in receive mode unless otherwise stated. ALIGNMENT PROCEDURE 1. 5-Маег Sensitivity Place the transceiver in the receive mode and connect а signal generator to the antenna terminal of the trans- ceiver. Set the signal generator to 14,200 KHz with an output of 30 pV. Tune the transceiver for a maximum S-meter reading. The S-meter should read S-9. IF S-meter adjustment is required, adjust VR2 to obtain an S-9 reading. | Q; Q. When the transceiver is tuned to 14.200 KHz. the internal 100 KHz crystal calibrator output will be approximately 50 uV or 5-9 on the S-meter. 2. Noise Blanker Threshold Tune the transceiver to a 100 KHz marker signal on the 3.5 MHz band. Connect a VIVM between the test point illustrated in Fig. 13 and ground. Detune the main tuning dial approximately 5 KHz until the marker signal is not heard. Align TIOS for a maximum VTVM reading. which should be approximately minus 0.07 volt. The operating level of the noise blanker is determined by the THRESHOLD control. VRI. Counterclockwise rotation of the control increases the effectiveness of the blanker, however, extreme setting of this control reduces the receiver sensitivity. Tune the receiver to the 15 meter band and adjust the controls for maximum sensitivity. Adjust VR2 for minimum pulse noise. The noise blanker is not effective against continuous noise, however is quite effective on short, pulse type noises. Extremely strong signals may cause distortion on the received signal due to mixing in the switching diode. 3. VOX Adjustment The VOX controls are located ‚on PB-1385. AF unit. These are VR3 Antitrip. VR4 Delav. and VR5 Relay sensitivity. VR1 VOX GAIN control is located on the front panel. Set the VOX GAIN switch to the PTT position and turn the AF GAIN and MIC GAIN controls fully counterclockwise. Slowly rotate the RELAY control (VRS) clockwise until the relay activates, then return the control slowly counterclockwise until relay re- leases. This release point is the proper setting for the RELAY sensitivity control. Set the MIC GAIN control to the center of its travel. Speak into the microphone normally, and adjust the VOX GAIN control, VRI, to just activate the VOX relay. Tune in a signal and adjust the AF GAIN control to a comfortable listening level. Set the ANTITRIP control VR3 to the minimum point that will prevent the speaker output from tripping the VOX relay. Adjust the DELAY control, VR4, for suitable release time. 4. CW Sidetone Level The CW sidetone level may be adjusted with the This effect can be reduced by decreasing the Noise SIDETONE level potentiometer, VR2, located on Blanker Threshold control or by switching the Noise РВ-1385. Blanker to “OFF”. X, TC: Q:S, VR.Q. Qs VR, Qs, VR; УВ. VR, | Q, 5. Carrier Balance The transceiver should be allowed to reach operating temperature before making the carrier balance adjust- ment. Tune-up the transceiver for SSB operation using an antenna or dummy load. Turn the MIC GAIN control fully counterclockwise to remove all audio from the modulator stage. With the MODE switch set to either the LSB or USB position, set the VOX GAIN control to the MOX position and adjust the carrier balance controls. УК] and TC4, for minimum PO meter reading. A more accurate balance may be obtained by tuning a receiver, having an S-meter. to the transmitted fre- quency. Adjust the balance controls for minimum S-Meter reading while switching the MODE switch back and forth between the two sideband modes to obtain good carrier suppression for both sidebands. The carrier frequency is adjusted by TC] for USB and TC2 for LSB in order to place the carrier frequency to approximately the 25 db down point on the filter response skirts. Carrier balance for the receive ring demodulator can be adjusted with VR3. Disconnect the antenna from the transceiver, change the MODE switch from LSB to USB and adjust VR3 for a zero S-meter reading. MARKER SWITCH UP 100kHz DOWN25kHz pris IF UNIT" AF UNIT CARRIER OSC UNIT FIX UNIT MIC AMP UNIT L 108 TOP VIEW L 191 Fig. 16 6. CW and AM Carrier Osciilator Connect a frequency counter and an RF probe of a VIVM to pin 8 of PS-3 on IF unit PB1382. Set the MODE switch to TUNE. the HEATER switch to OFF, the SELECT switch to TX EXT and the VOX GAIN to the MOX position. Advance the CARRIER control fully clockwise. Adjust TC3 for 8999.3 KHz on the counter and TC6 on carrier oscillator unit for a 0.5 volt VTVM reading. VR, VR, TC, Tao N | | ТС. 0 | CARRIER OSC UNIT(PB-1384) с. ‘a. . Fig. 15 | 4 premix UNIT Lim Lie o 108 VFO UNIT TC, VR,— Rec | UNIT 7. Clarifier The frequencies coincide at CLARIFIER control OFF and O position in the receive mode. If not, adjust potentiometer VR6, located near the choke coil, under the main chassis. 8. Bias The final amplifier bias must be checked to insure linearity and normal operating plate dissipation for the final tubes. Adjust the BIAS control, VR1 on PB-1385, as follows: Set the transceiver to the receive mode and allow it to reach operating temperature (approximately 3 minutes). Set the MODE switch to USB, the METER switch to IC and the VOX GAIN control to the MOX position for the transmit mode. The meter will indicate PA plate idle current. The idle current is 60 mA, which is marked as “IDLE” on the meter scale. If the idle current is other than this value, adjust the BIAS control for the correct value. There is a little difference in the idle current between AC and DC operation. Adjust the idle current to 60 mA for each operation. 9. Final Amplifier Neutralization When replacing the final amplifier tubes, it may be necessary to reset the bias to give a correct idle current. In addition, also check the neutralization. The procedure outlined below will guarantee maximum output and prolonged tube life. a ТЕ Lio Una Le tay ste RF UNIT BOTTOM VIEW L CAUTION | HIGH VOLTAGES ARE PRESENT ON UNDERSIDE: OF CHASSIS AND ON THE INSIDE OF THE FINAL COMPARTMENT. USE EXTREME CARE WHILE MAKING ADJUSTMENTS WITH THE WIRING EX-' POSED. | Connect a dummy load to the antenna. and set the meter to IC. Locate, TC], the neutralization variable capacitor shaft on the chassis in the final amplifier section. Check the final amplifier idle current in both the USB and LSB positions and adjust as previously described. Tune-up the transceiver at 29 MHz, 10B or 10C band, with the MODE switch in the TUNE position, and advance the CARRIER control until the meter IC reads 100 mA. Rotate the PLATE tuning control and observe the dip as indicated on the meter. If the dip is not prominent, reduce the loading control slightly for a better indication. As the PLATE control is rotated, the meter should rise equally and smooth- ly on either side of the maximum dip indication. Determine which side of the dip rises abruptly. Set the PLATE control slightly to this side of dip. keeping the meter reading below 100 mA. Using a nonmetallic tuning wand. rotate the neutralization capacitor shaft a small amount in the direction which reduces the current shown on the meter. Repeat steps (6) and (7) until the meter indicates a smooth and equal rise on either side of the maximum dip point. (1) (2) (3) (4) (5) (6) (7) The final compartment cover must be in place in order to maintain the RF shielding required during the neutralization procedure. 10. Marker Generator Set the BAND switch to WWV/JJY position and tune the transceiver to the WWV/JJY signal. Zero beat the marker signal against WWV by adjusting ГС1. И may be necessary to change the 50 pF ceramic capacitor connected in parallel with TCI, whenever the marker crystal is replaced. 11. (1) (4) (5) (6) (7) Premix Circuit Connect the RF probe of a VTVM to the T.P. terminal of the premix unit. Set the BAND switch to 29.5 MHz. Set the trimmer capacitor, TC8, to its mid point. (half capacitance ) Peak [140 for a maximum VTVM reading, and then rotate the core clockwise until the VTVM reading indicates 90 mV. Readjust TC8 until the VTVM reading indicates 40 mV. Set the BAND switch to 29.5 MHz and adjust TC7 for 40 mV. On 28.5 MHz, adjust TC6 and on 28.0 MHz, adjust TCS, for a 40 mV VTVM reading. Set the BAND switch to 21 MHz and adjust TC4 for a 30 mV VTVM reading. On 14 MHz, adjust TC2 for 25 mV, and on 7.0 MHz, adjust TC] for 50 mV. Set the BAND switch to 14 MHz and the subswitch to WWV/JJY and adjust TC3 for a 50 mV VTVM reading. VR (8) (9) (10) Lio Fig. 18 Disconnect the VTVM from the circuit. Set the Standard Signal Generator to 14.245 MHz and its output voitage to 60db. Tune the transceiver to the SSG signal. Then tune to the 14.255 MHz spurious signal and adjust VRI for a minimum S-meter indication in order to balance premixer Q1, MC1496G. Connect the KF probe of the VTVM to TP terminal “RF” near Q7 of the RF unit. (Refer to Fig. 19) Set the BAND switch to 7.0 MHz band, and the VFO dial to 250 KHz. Temporarily solder a 470 ohm resistor between A, B and C terminals of L116. Peak the coil closest to the chassis. Two coils are sound on the coil form for a maximum УТУМ reading. Disconnect the one end (A terminal) of the temporary 470 ohm resistor and solder it to the B terminal. Peak the coil on the other end of the coil form for a maximum VTVM reading. The VTVM read- ing should be approximately 0.4 voit. Disconnect the temporary 470 ohm resistor. PR. à. TC; ТС. Ka PREMIX UNIT(PB- 1383) (11) Set the BAND switch to 14.0 MHz. the sub band (13) switch to 28.0 MHz and the VFO dial to the 500 KHz position. Temporarily solder a 470 ohm resistor between terminal A and C of coil L117 and peak the coil closest to the chassis for a maximum VTVM reading. Disconnect the A terminal end of the 470 ohm resistor and solder it to the B terminal. Peak the other coil for a maximum reading. (approximately 0.4 volt) Remove the resistor trom the terminals. Set the VFO dial to 0 KHz. and check the VTVM reading. It should be approximately 0.3 volt. Set the sub band switch to the ЛУ МАУ position and check for a 0.3 volt VIVM reading. | Set the BAND switch to the 21.0 MHz band and the VFO to the 250 KHz. position. Repeat the same procedures as in step (9). for coil L118. The VTVM reading should be around 0.3 volt over the entire range of the VFO. Set the BAND switch to 28 MHz. the sub band switch to 28.5 MHz and the VFO dial to 250 KHz. Repeat the same procedures as step (9) for coil L119. The VTVM reading should be approximate- ly 0.25 volts. Check the VTVM reading when the VIVM sub band switch is set to the other 28 MHz settings. It should be 0.25 volts or more. Be sure that [119 is tuned to 37-39 MHz. Extreme care should be observed in order that the coil is not tuned to the heterodyne crystal frequencies of 42.5--44.0 MHz. When the VFO switch is set to the EXT position, the VIVM reading should be zero. If not, it may be mistuned to the heterodyne crystal frequency. — Disconnect the VTVM from the test point. Qi FIX UNIT(PB- 1386) Lise Fig. 2] 12. Fix (Crystal Controlled Channel) Oscillator Insert a crystal into the socket of the FIX unit. PB1386. Set the VFO SELECT switch to either FIX | or FIX 2 position for which crystal is installed. Set the CLARIFIER to the OFF position. Connect the RF probe of a VIVM to pin 7 of the VFO EXT socket on the rear panel. Adjust L132 for a 0.1 volt VTVM reading. Connect the frequency counter to pin 7 where the VIVM was connected. The crystal holders accept standard HC25 U type crystals. All crystal frequencies must fall between 5.000 KHz and 5,500 KHz. The correct crystal frequency for any desired operating frequency mav be determined by the following formula. fx =f, - operating frequency where fx = Crystal frequency f, = Constant taken from following table: | BAND , LSB USB | CW AM 3.5 9001.5 8998.5 5999.3 7.0 12501.5 12498.5 12499,3 14 19501.5 19498.5 19499.3 21 26501.5 26498.5 26499.3 28A 33501.5 33498.5 33499,3 28B 34001.5 33998.5 : 33999.3 28C 34501.5 344985 | 344993 — 28D 35001.5 34998.5 | 34999, 3 | For example; To find the proper crystal frequency for operation at 7099 KHz, LSB on the 40 meter band. calculate as follows: From the Table 3, find the constant f, for 40 meter LSB. This constant is 12501.5 KHz. therefore. fx = 12501.5 - 7099 = $402.5 KHz 13. Receiver IF Transformer, T101 through T109 on PB1382. Set the BAND switch to 14 MHz, the VFO dial to 0 KHz and the CALIBRATOR to the ON position. Tune the transceiver to the marker signal at 14,000 KHz. Peak T101 through T109 for a maximum S-meter indication. When the marker signal is too strong. detune the PRESELECTOR until the maximum 5- meter indication is less than S-5 in order to avoid the AGC effect. 14. Transmitter IF Circuit T110 and TCS on PB-1384; T106 on PB-1382. Connect the output of an audio signal generator to pin О of the MIC Jack and set its output to 20 mV at 1,000 Hz. Set the MODE switch to USB or LSB. and the VOX GAIN to the MOX position. Advance the MIC GAIN until the IC increases to 150 mA. Peak T110 and TC5 for a maximum IC reading. Peak T106 on PB-1382 for a maximum IC reading. Do not exceed an IC limit of 150 mA and the time limit of 10 seconds continuous transmit during this alignment otherwise damage may result to the final tubes. 15. Trap Coils L120, L121 Set the BAND switch to the 7.0 MHz band. the MODE Tune the transceiver to the 29.0 MHz marker signal. Detune the VFO until the S-meter reading falls to S-3 or less in order to avoid saturation by the AGC action of the receiver during the receiver front end alignment. Peak L105 and L110 for a maximum S-meter reading. Set the VOX GAIN control to the MOX position. Advance the CARRIER control until the IC indicates 150 mA and peak L115 for a maximum power output. CAUTION | EXCEEDING THE TIME LIMIT OF 10 SECONDS to USB and the PRESELECTOR to the fully clock- wise position in the receive mode. Connect the output of a signal generator set to exactly 9 MHz with an output of 60 db. Adjust L120 and L121 for minimum WITH CONTINUOUS FULL POWER OUTPUT! DURING TRANSMITTER TUNING, MAY RE- SULT IN DAMAGE TO THE FINAL OUTPUT: TUBES, | audio output. 16. Transmitter Mixer/Driver and Receiver Front End Stages Assuming that the signal generating stages of the transceiver are functioning properly, use the internally generated signal of the transceiver to align the trans- mitter mixer and driver stages and the Standard Signal Generator to align the receiver front end..The internal marker signal can be used when a SSG is not available. Prior to starting the alignment, set TC2 on the band switch (refer to the bottom view) to its 2/3 capaci- tance position. Connect a 50 ohm dummy load to the antenna jack on rear panel. (1) 28 MHz band; L105, L110, L115 Set the BAND switch to the 28 MHz band, the sub band switch to 29.0, the VFO dial to 0 KHz, the PRESELECTOR to the 12 o’clock position and the MODE switch to the TUNE position. (2) (3) (4) (5) 21 MHz; L104, L109, L114 Set the BAND switch to 21.0 MHz, the VFO dial to 0 KHz and the PRESELECTOR to the “2” position. Peak L104 and L109 for a maximum S-meter reading and L114 for maximum power output using the same procedures described in step (1) above. When the PRESELECTOR setting does not coin- cide between receive and transmit, carefully find a compromise point by realigning L109 and L114. 14 MHz; L103, L108, L113 Align L103, L108 and L113 using the same procedures as the 21 MHz band with the BAND switch set to the 21.0 MHz position. 7 MHz; L102, L107, L112 Align L102, L107 and 1112 using the same procedures as the 21 MHz band with the BAND switch to the 7.0 MHz position. . 3.5 MHz L101, L106, L111 Align L101, L106 and 1111 using the same procedures as the 21 MHz band with the setting of BAND switch to 3.5 MHz, the VFO dial to 750 KHz and the PRESELECTOR to the 12 o'clock position. VOLTAGE CHART. TUBES Т: Transmit mode LSB with no modulation К: Receive mode LSB VTVM AC 8kf:V, DC 20k0 У 23 4 5 б 8 9 10. Il 12 STR TORIT RIT OR TRITR TIRIT RITIR TR T RT ROTOR V1 7 So ne AC AC ga | So ИИ tOBYTA 4.4 0 0 40.0 | 0 | оо 12.0 12,0 МС МС 300 320 220 250 0.1 0 — — V2 | nn a eee Don ele | een nn: AC АС 61560 620 660 0 0 0.04 0 155165 0 0. ss 80! 0 | Оооо 0 -55-80: 0 0 1551656665 V3 ranger АС AC ne nace cel ent a | ee en a ta dare AC AC RF Unit Т : Transmit mode LSB with no modulation К; Receive mode LSB | Е CF = ОИ S D G (G1) (G2) T R тв T в T R T R T R TR Q2 0.35 10.375! 2.8 | 2.9 | 0.8 | 0.9 |: QI 1.45) 1.4 110.0 1051 0 | o | — | - 2SC784R 2 || 2SK19GR Q3 2.2 2.3 | 10.01 105 28| 2.9 || 9 9.8 | 3.5 |.12.0112.0] 2.8 | 2.8 | 2.8 | 2.8 2SC784R | 4. 3SK40M 9 |-12. 0,2. : Q6 0.85! 0.8 | 6.2 1 7.2 | 0.9 |135 || @5 10.0! 2.451 11.0 11.51 06 | 06 | 2.0 11.95 25C 373 . . . a + . 3SK40M . | Fi a | . . ” D Q7 Secrgar | 0-85} 11 | 11.5) 12.0] 1.2 | 6.2 IF Unit T : Transmit mode LSB with no modulation В: Receive mode LSB С7...... NB SW ON E C B E C B T R T R T R T в т В T в 91 | 9.0 1 0.75 115 12 | 3.0 | 1.25 | Q9 9.75 | 1.15 | 11.5 | 12.5 | 26 | 1.9 280372 Y 2 SC 373 : : : : Q2 Q10 | SSC784R 1.6 1.6) 7.3) 7.3) 2.4 | 2.4 | 250373 9.6 | 1.35 | 11.5 | 12.0 | 3.0 | 1.85 Q3 | 9012 SSC372y 0.85 | 0.9 | 11.5 | 12.0 | 1.4 | 1.45 || Stay 0 0 9 9 0 0 Q4 Q13 Став 0.8 | 0.85 | 11.5 | 12.0 | 1.4 | 1.45 | Say 0 0 | 8.2 | 8.2 | 0 0 Q7 Q 14 5 SC372Y 0 0 | 11.0} 11.5 | 0.46 | 0.46 || Saczzay ıı 11 11.51 12 1155 5 98 2.1 | 11.0 11.0 | 12.0 | 2.5 | 5.2 | 2SC373 В р . . р . | S D G T | R T R T R QS 1.25 | 1.25 | 4.2 | 4.2 | 0 0 2SK19GR Q6 SCKISCR 1.3 | 1.3 | 1.85 | 1.85 | 0 0 Q11 SSKIOCR 1.9 | 1.9 ı 12 0 0 —22— Fox Tango International AF Unit Т: Transmit mode LSB with no modulation КЮ: Receive mode LSB Q3:.... CALIB SW ON т 02 3 4 5 6 7 8 9 TIRITIRITIRITIRITIR TR тв тв T `В Q3(100kHz) | О О ООО ЗОО ООО ЗО MEC-6020 0 | 0 06506 o 'o|o'olo o lolo Q3(25kHz) | Ä _ _ _ _ _ _ MFC_6020 0 | 0 11.0! 1.0) 2.5] 2.5} 26126125 25150150 | Q4 | CL ООО МЕС-6034А | 0 | 0 120 130 61 61160160 7.4 7.4] 4.01 4.1 | 6 | | D D-3141 0.65 0.7 | 0.58 0.65 0.04 0.04] O 0 | 1.2 1.25 4.6 5.0| 4.6 | 5.0 12.0 12.5 11.5 12.0 Q11 ! | | AN-214 57 6.01 0 | 0 71 74 10.01 10.5] 5.6160 0 | 0 | 5.21) 5.5) 11 11.5 12.0 13.0 E СВ Е Co B T R T R | T R T R T R T R Ql : й 07 С 735 05: 0.5 | 9.0 9.0 0.35 | -0.35 | Séca72y 09 109 98 98 14 15 92 _ y u _ 09 | OSC 735Y 0 0 0.15 | -0.15) -0.15| -0.15 || 256373 0 0 0 | 13.0 | 0.52 | 0.55 Q5 a. Q10 | 380373 8.6 | 7.8 | 8.8 | 8.95 | 2.2 | 1.5 | SScarov 0 051 0 0.8 0 | 0.95 | Q2 | 9 SC735Y 0.3 | 0.3 | 9.0 | 9.0 | 0.25 0.25 S D G T R T R T R Q8 SSKıscr | 0.38 | 0.39 | 0.52 | 0.55 | 0 0 MIC AMP Unit T : Transmit mode LSB with no modulation В: Receive mode LSB 1 2 3 4 5 6 7 8 9 TIRITIRITIR TIR TIRITIRIT RIT RIT в 4 141 0.9 10.95! 1.2 | 1.21 0.7 | 0.7 | 0.65] 0.65; 1.8 11.85) 5.0 | 5.4 | 5.0 55 111.5 12.0 11.0 12.0) 5 D G T R T R T R 01 VFO Unit T.R: Transmit and Receive E с. В Е С В T R T R T R T R T R T | R Qi | Q2 2ScaY | 1.5 | 1.5 | 3.3 | 3.3 | 1.85 | 1.85 | Se cary 0.75 | 0.75 | 5.5 | 5.5 | 1.25 | 1.25 — 23 — CARRIER OSC Unit Т : Transmit mode LSB В: Receive mode LSB with no modulation E C B C B T R T R T R T R T R T R Q1 Q1 tat 5 SC372Y 0.45 | 0.45 | 6.0 | 6.0 | 0.9 | 0.9 | Sécary 7.2 | 7.4 | 12.5 | 13.5 | 1.0 | 1.05 Q2 Q5 SacaT2Y 0.55 | 0.55 | 6.0 | 6.0 | 0.95 | 0.95 || eScgry 1.35 | 1.45 | 8.3 | 9.0 | 1.8 | 2.0 Q3 Q8 | 580379 Y 7.5 | 7.6 | 6.0 | 6.0 | 1.6 | 1.75 || 2<С370у 0 0 | 43 | 45 | 1.2 | 1.3 | 5. D G | D G To R T R T R T R T R T R Q6 Q7 SK 109 Y 1.15 | 11.51 120 | 13.5 | 0 9.1 || SSK yoy 1.0 | 1.0 | 1.15 | 1.1 0 1.9 PREMIX Unit T : Transmit mode LSB В: Receive mode LSB with no modulation ] 2 3 4 5 6 8 9 10 ТЕТ RIT! RITIRITI тв TI RT RIT TR Q1 3.3/3.5] 2.7) 2.9/2.7] 2.9) 3.31 3.511.075; 1.1110.5 11 16.216.564 661115 1210 | 0 MC 1496G | E C B T R T R T R Q2 9 SC372Y 0.6 | 0.6 | 6.0 | 6.0 | 0.95 | 0.95 FIX Unit S D G T R T R T R Q1 Sexjocr | 0.35 | 0.35 | 4.2 | 4.2 0 0 CONNECTORS Т : Transmit mode LSB В: Receive mode LSB with no modulation ] 2 3 4 6 7 8 9 10 11 12 TIRITIR T RITIRITIRITIRITIR TIRITIRITIRITIRITIR J4 | MIC 9} 0 ololohzsncnc)-|-|-|---1-}-1-1-) = J10 0 o [мс ме вая ооо ме м оо EXT VFO | 0) 12. | ce AS BS AS АС 155| 160 300| 320 620 660|-155)-160 0 | 0} 0 0 0 ооо мм - - Л! FAN O~® AC 100V J13 POWER @,@~@® AC 100V SW ON J4 PTT R,12.5V T,0 | J8 KEY CW R,-80V T.-80V -55V(KEY DOWN) RESISTANCE CHART PSN 1} 2/3 /4/5 1/6/1747 ~/8 ! 9) 10!) 4 | 12) 14 | 15 RF UNIT , [0 | 0 20 0 | 2k) — | 0 | o | 90 | 120) 0 | | — | — | - so | Q | 2K| © 180К — | 4K|3.5K) © | БК 0 4.7K — | — | - , | 240 |20 | = | 2K 20 | 0 | 700) 0 ge | -I-|1 7, - co | o | — 128Kl1.5Kl2.8Kl2.8K| 0 | — | — | © | ~ | — | — | - IF UNIT , | 20 как 0 | — | — | — | 0 оо кк 2K = | - = I5Ki © | 18K! 0 | — | - | — | 0 | 0 | к 2k) - | - = 09,0 90 к © | 0 20 © | 25K} 0 | © | 500 1.5K} 0 © | 49 2К2.2К © | 0 250 |1.6K| © 25К 0 | © | 600 - | 2 | 0 | 15 3K|20 | — | 80 |60 | 0 | 0 бк 20 |40K 0 - 0 | © 15 | ЗК 400 — | 500 600К © | < 200К 150К 160K 130 — — 2.2K: 0 | 0 |35K1.5K - | 20 : 90 |9 | — | — | - = AF UNIT 6 4 = | 6K 0 | © 100K3,5K — 300 200) 7K - | - | -,- - - | — 20 | 20 1110 | — 0 0 1 - - - "Fax ao mo - [о БК === — — MIC unrr | g 00 | 0 /2:5K 20 | вк 0 | 10K во = co | o | 0 | 15K] 12K) o | 0 | © o - == o- - CARRIER unt | 9 200.2220 mol 0 [400K 90 0 | 700 co | 0 | 0 | 20 2.5K 450 350 | co | 2K| 5К 0 /400K|1.5K|600 | 2K © | 0 | 2K) 2K) © 1,8K 12BY7A |V, | 180 75K| 0 | 0 | 0 | — ко - I -1- 1-0 - 6JS6C |V,| 0 | 0/65 | 0 50K! 0 | 0 | 0 } 50K] 0 | 05 - - — 6JS6C |v, 0.5 | 0 | 65 0 | 50K} 0 | 0 | 0 | 50K} 0 65 [1.0 | — - - VOX GAIN Measured with VTVM of 20k0/V. | AF GAIN Upper values are resistance between pins and ground with the printed boards installed. MIC GAIN 0 Lower values are resistance between pins and ground with the printed boards removed CARRIER from the sockets. RF GAIN 10 : : SP SPEAKER V VACUUM TUBE t SA-70 40-3W 1 12BY7A 2,3 6JS6C M METER 1 PF-45 0.5mA/0.5 A VS VACUUM TUBE SOCKET 1 S9-241-04 9P INDUCTOR 2,3 SB-2606 12P 1,3,5,6. RF CHOKE(TV245) 250 nH 2,4,9,10 RF CHOKE 250 yH J JACK SOCKET 7,8 RF CHOKE 1mH 1 JSO-239 127 RF CHOKE(PLATE) 500 nH 2,3,4,5 RCA CN-7017 139 RF CHOKE 300 uH 6 FM-144J 7 SG-7814 3P PS PIN CONNECTOR SOCKET 8 SG-7615-1 2P 1,2,3 128-12-10-181$ 9 Р-2240 4,5, 9 128-15-10-181S -10 SB-0821 7P 6, 7, 8 128-10-10-1815 11 SA602B00 11P 12 SI-6303-1 4P D DIODE 13 450-AB12M 12P 1,2,3,4,5,6,7,9,10,12 Si 1S1555 | 8,11 Ge 151007 RL RELAY 1 12V AE3171-42 FAN 2 12V MX-2P FAN 2SB-10A FAN PLUG SI-5908 RLS RELAY SOCKET 1 AE3860 C CAPACITOR 2 PX08 DIPPED MICA 19, #33 500WV 2PF +05PF 5 SW ITCH 24, 64 500WV 5PF +05PF 1 BAND-A ROTARY RS 8-16-5 23, 29, 41, 42, 53 500WV 10PF +10% 2 BAND-B ROTARY ESR-E245R25C | 32,81 500WV 15PF =+10% 3 SEESAW WD2101 21, 22, 72 500WV 20PF 10% 4 SEESAW WD2301 31 500WV 25PF 10% 5 PUSH 5F-002DF1911 18, 20, 30, 48, 70, 71 500WV 40PF +10% 6 ROTARY ESR-E365R25B 73 500WV 50PF 10% 7 ROTARY ESR-E246R25C 47 500WV 80PF +10% 16, 17, 34 500WV 100PF +10% F FUSE 28 500WV 120PF +10% 1 AC 5A(100—117V) 25, 26, 40, 43 500WV 150РЕ +10% 2 LAMP FUSE 16V-0.15A 08-1596 | 69 500WV 170PF +10% | 39, 45 500WV 300PF +10% FS FUSE HOLDER 11 500WV 350РЕ +10% 1 AC SN-1001 65 500WV 400PF +10% 2 B-1 62 500WV 470PF +10% 63 500WV 680PF +10% PL LAMP | 27 500WV 1000PF +10% 1,2,3 16V-0.15A 08-1596 | 51 500 WV 2000PF +10% | MOULDED MICA LS LAMP SOCKET 55 1KWV 50РЕ +10% 1,2 001410A 74 1KWV 80PF +10% 3 ++ 001011 108 1KWV 100PF +10% | 44 1KWV 200PF +10% VR VARIABLE RESISTOR 60 3KWV 1000PF 10% 1 EVK-A2A-R20-314 1k0C/5kQA CERAMIC DISC 2 EVK-A2A-R20-339 5kQB/5kOA 76, 77, 78, 79, 93, 50WV O.0luF 23% 3 EVH-BOG-S25-14 10kQ0B 94, 95, 97, 109 4 EVH-BOA-R25-B54 50kQB 3, 4, 5, 10, 14, 15, 66, 67, 68, 50WV 0.0474 F 75% 5 VM11-5M1222 50kQB 80, 82, 83, 88, 89, 90, 91, 92, 96, 98 6 V10K8-1-2 50kQB 50 500WV 0.0047 uF 2%% | 35, 36, 37, 38, 49, 52 500 W V 0.014 F 7% VC VARIABLE CAPACITOR 54, 56, 57, 58 1 PRESELECTOR B535 59 1.AKWV 0.0047 4 F 7% 2 PLATE RT-18B-300VC 300PF | 1,2 1.4KWV 0.01uF 7% _ 3 LOAD B-1240DS 61 C104-100 3KWV 100PF +10% PLASTIC FILM TC TRIMMER CAPACITOR 84 50WV 0.047&F + 20% | 1 AIR TSN-150C 10PF | ELECTROLYTIC 2 CERAMIC ECV1ZW10P32 10PF | 9 150WV 14uF 107 16WV 10uF u 26 — 105 16WV 33uF 19 14 W 22 KQ +10% 6,7 500V 100 uF 16 14 W 82 КО +10% 106 25WV 1000uF 1, 5, 10, 12, 15, 18 1{W 100 КО +10% CERAMIC FEED THRU 20, 28 | 75 500V 1000PF +100% | 11,13 YW 220 КО +10% R RESISTOR C CAPACITOR CARBON COMPOSITION DIPPED MICA 4, 44 16 W 10 Q +10% 2 50WV 8PF +10% 40 16 W 33 О +10% 18 50 WV 10PF +10% 41 16 W 39 OC +10% 8,12 50 WV 30PF +10% 32 16 W 56 QQ +10% 1, 7, 10,17 50WV 100PF +10% 42 1W 82 A +10% CERAMIC DISC. | 3, 14, 33,.34, 43 ww 100 Q +10% 6, 9, 15, 16, 19, 20 50WV 0.01 uF =59% 19 Www 180 О +10% 3, 4, 5, 11, 13, 14, 21 50WV 0.047uF 238% 35 ZW 220 О +10% 31. ZW 470 QQ +10% = | 7, 15, 24, 45, 55 16 W 1 КО +10% A UE ee D 22, 30, 36 16 W 2.2KQ +10% P.C.B. PB-1382(A~Z) 46, 47 Lg W 4.7KQ +10% PP PIN CONNECTOR 49 15 W 6.8KQ +10% 1,2 129-12-10-181$ 6, 23,48 LE W 10 КО +10% 3 129-15-10-181S 11, 38, 39, 50, 51 1g W 15 KQ +10% | 8, 10 16 W. 22 КО +10% VR VARIABLE RESISTOR 9, 37 16 W 27 КО +10% 2, 3 V10K 8-4-2 5000B 12 16 W 33 KO *+10% 1 V10K 8-1-2 10KNB 16 52 W 47 KQ +10% 1,2 WwW 470 КО +10% T IF TRANSFORMER 25 16 W 1 MQ +10% 101, 102, 103, 105, 106 R12-4073 METALIC FILM 104, 107, 108, 109 R12-4074 20 3W 5.1KQ +10% 21 5 W 18 КО +10% L. INDUCTOR WIRE WOUND 20 RF CHOKE 104H 29 METER SHUNT 1,2,3,6,7,8,9, RF CHOKE 250 yH 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 T TRANSFORMER 5,19 RF CHOKE 1 mH 12 AF CHOKE | 20mH 0.5A POWER TRANSFORMER Q TRANSISTOR 1, 3, 7,12, 13,14 2SC372 Y 8, 9, 10 2SC373 > 2,4 | 2SC784R | Р.С.В. PB-1381(A—Z) 5,6,11 2SK19GR Q-TRANSISTOR | | 1 | 2SK19GR D DIODE 2, 3, 6 2SC784R 6, 7,8 9,10, Ge 151007 4,5 3SK40M 11, 13, 14, 15, 17, 18, 19, 20,21 , 7 25C373 1, 2, 3, 4, 5, 12, 16 Si 181555 22, 23 Zener W2Z090 D-DIODE 1,2 Si 181555 XF CRYSTAL FILTER 1 XF-92A SSB L-INDUCTOR 2 XF-90B AM(OPTION) 1,2 RF CHOKE 2 mH 3 XF-90C CW(OPTION) | PP-PIN CONNECTOR R RESISTOR 1 128-12-10-181P CARBON FILM 69 14 W 68 AO +10% R-RESISTOR 4, 12, 17, 28, 30, 32, 42 WwW 100 02 +10% CARBON FILM 47, 51, 54, 63, 68, 71 30 Law 47 A +10% 27, 41, 46, 50, 59 YW 330 2 +10% 27 14 W 56 A +10% 8, 53, 66, 67, 77 У 470 Q +10% | 29, 31, 32 34 \ 100 Q +10% 58 KW 680 OQ +10% 3, 8,17, 23 4 \ 220 A +10% 3, 7, 13, 16, 62, 73, 76 1¿W 1KQ +10% 7, 22, 24 Vw 330 Q +10% 23 14 W 1.5KQ +10% 4 {WwW 560 0 +10% 9, 43, 74 14 W 2.2KQ +10% 9 34 W 1 КО +10% | 10,14, 24 Law 3.3KQ +10% 21 14 W 1.8KQ +10% 2, 6, 20, 35, 36, 45, 48,61 WW 4.7KQ +10% 2,14 LE W . 2.2KQ +10% 26 14 W 8.2KQ +10% 25 14 W 3.3KQ +10% 5,21,29,31,33,38,64,72 1{W 10 KQ +10% 6, 26 14 W 10 KQ +10% 1,11, 15, 49,56,65,70 WwW 22 КО +10% 39, 44, 60 м W 27KQ +10% 12 ZW 12KQ =10% 25, 34, 37 LEW A7KQ +10% 1 Li W 4.7KQ +10% 18, 19, 22, 52 ZW 100KQ +10% 5, 6, 11 м W 10 КО +10% 57 14 W A70KQ +10% 2 l4 W 22 KQ +10% C CAPACITOR ce CAPACITOR DIPPED MICA DIPPED MICA 3,61 50WV 10PF +10% 14 50WV 10PF +10% 8 50WV 15PF +10% 3 50WV 15PF +10% 24, 57, 89, 90, 91, 92, 94 50WV 20PF +10% 2 50WV 20PF +10% 95, 96 1 50WV 40PF +10% 15, 43, 81,93 50WV 30PF +10% 13 50WV 150РЕ +10% 4,19 50WV 50 PF +10% CERAMIC DISC 18, 21, 22, 60 50WV 100PF +10% 8, 9, 11, 12 50WV 0.01 uF ~ 80% CERAMIC DISC 4, 5, 6, 7, 10 50WV 0.047 uF ~ 80% 1 50WV 05PF +0.25PF 11, 29, 30, 31, 34,35,38 50WV 0.0014F 15% 39, 42, 47, 51, 62, 70, 72, 77 ARRIER:O | 5, 9, 10, 13, 16, 17, 23,25 50WV 0.01 uF +%% Р.С. В. РВ-1386(А— Z) 28, 44, 48, 58, 69, 75, 88 X CRYSTAL | 2, 6, 7, 12, 14, 27, 32 50WV 0.047uF 189% 1 HC/18U 8998.5kHz(SSB) 33, 36, 37, 40, 41, 45, 46, 49, 50, 52 1 2 HC/18U 9001.5kHz(SSB) 53, 54, 55, 56, 59, 66, 67, 68, 71, 73 3 HC/18U 8999.3kHz(CW-AM) 74, 78, 79, 80, 82, 84, 85, 86, 87, 98, 101 PLASTIC FILM TC TRIMMER CAPACITOR 20 | 50WV 0.1u4F +20% 1,2,3 ECV-1ZW 20P40 20PF 63 50WV 0.2u4F +20% 4,5 ECV-1ZW 50P40 50PF ELECTROLYTIC 6 ECV-1ZW 40P32 40 PF 102 16WV 1 uF | 26, 65, 76, 99, 100 16WV 10 uF L INDUCTOR SOLID ELECT 1 RF CHOKE 10 LH 64 25WV 1 uF 2, 3, 4 RF CHOKE 250 nH 97 25WV 2.24 F 133, 134, 135 RF CHOKE 136, 137 RF CHOKE PR T IF TRANSFORMER P.C.B.. PB-1383(A~Z) 110 R12-4074 X CRYSTAL 1 HC/18U 21.5 MHz VR VARIABLE RESISTOR 2 HC/18U 28.5 MHz 1 V10K-8-1-2 5000B 3 HC/18U 29.5 MHz 2 V10K-8-1-2 10KQB 4 HC/18 U 35.5 MHz | 5 HC/18 U 42.5 MHz D DIODE 6 HC/18 U 43.0 MHz 1, 2, 3, 4 Ge 181007 7 HC/18 U 43.5 MHz 8 HC/18 U 44,0 MHz Q TRANSISTOR | 1,2,3,4,5,8 25C372Y TC TRIMMER CAPACITOR 6, 7 2SK19Y 1,2,3,4,5,6,7,8 ECV-1ZW20P5l 20PF PP PIN CONNECTOR L INDUCTOR 1 128-15-10-181 P 1 RF CHOKE 250 «H 2 RF CHOKE 1mH R RESISTOR 140 OSC COIL | CARBON FILM 14, 19, 23, 26, 29 l¿W 100 (QM +10% Q TRANSISTOR 12 ,W 180 2 +10% 1 IC MC 1496G 3, 6, 9 ММ 270 OQ +10% 2 25C372Y 13, 20, 30 М 470 Q +10% 24 YW 560 0 +10% VR VARIABLE RESISTOR 15,18 4 W 1 КО +10% 1 SR19R001-47KQOB 16, 28 14 W 1.5KQ 10% 22,25 ZW 2.2KN 10% R RESISTOR 1, 4, 7,10 54 УИ. 4.7KQ +10% CARBON FILM 2,5, 8, 11 а W 22 КО +10% 13 lá W 56 Q +10% 17 14 W 33 КО +10% 14 ZW 100 Q +10% 21 Yew 100 КО +10% 3 lw 330 О +10% 27 THERMISTOR SDT-250 4 ZW 470 Q +10% C CAPACITOR 10 = ZW 820 Q +10% DIPPED MICA | 7,8,9 Li W 1 КО +10% 9 50WV 3PF +0.5PF 3, 6, 18, 22 50WV 30PF +10% : 24 50 WV 50PF +10% P.C.B. PB-1385(A—Z) 2,5,8 50WV 130PF +10% 5 SWITCH 19 50WV 150PF +10% 1 SLIDE SS-F-22-08 12 50WV 200PF +10% 28 50WV 250PF +10% x CRYSTAL. 13, 29 50WV 470PF +10% 1 HC/13U 100 kHz CERAMIC DISC i 7 50WV 0O.001uF 183% PP PIN CONNECTOR 1, 4, 11, 14, 16, 17, 20,21 50WV 0.01 uF 18% 1 129-15-10-181 P 23, 25, 26, 27, 30, 34 | 2,3 129-10-10-181 P 10, 31, 32, 33 50 WV 0.047uF :3% | PLASTIC FILM VR VARIABLE RESISTOR 15 50WV 0.24F +20% 2,5 V10K8-1-2 10KQB ELECTROLYTIC 3 V18K3-2 10KQB 35 16WV 47 uF 1 V18K3-2 20 KB 4 V18K3-2 2MOB O L INDUCTROR P.C.B. PB-1199(A~Z) 1,2 RF CHOKE S6 392 3.9 mH Q TRANSISTOR 3 RF CHOKE 250 «H 1,2 25C372Y Za | | | TC TRIMMER CAPACITOR D DIODE o 1 ECV1ZW50P 40 50 PF 1 VARACTOR 152236 Q TRANSISTOR L INDUCTOR 1, 2 25C735 Y 3 RF CHOKE 250 «H 3 IC MF C-8020 2 RF CHOKE 1mH 4 IC MFC-6034A 130 OSC COIL 5, 9 25C373 131 RF CHOKE 6 IC LD-3141 7,10 25C372Y R RESISTOR 8 2SK19GR CARBON FILM 11 IC AN-214 9 14 W 22 Q +10% 12, 13 ZW 100 QQ +10% D DIODE 7 L{W 220 о +10% 1,2 ZENER WZ-090 4 Yow 2.2KQ +10% 3, 4, 5, 6, 7, 8 Si 181555 1 4 W 3.3KQ +10% 6 lá W 8.2KQ +10% R RESISTOR 10 14 W 10 KQ +10% CARBON FILM 3 14 \ 18 КО +10% 3, 6, 25 ZW 100 QA +10% 5,11 Law 22 КО +10% 51 ZW 120 A +10% 2 14 W 33 KA +10% 8, 24 KW 220 2 +10% 7, 21, 29, 42, 45 ZW 470 QM +10% C CAPACITOR 37 ZW 680 AN +10% DIPPED MICA 11, 26 ZW 1 Ко +10% 15 50WV 8PF +10% 10, 22, 28, 38, 41, 52 lá W 2.2KQ +10% 4,6 50WV 20PF +10% 44 AW 3.3KQ +10% 7 50WV __30PF =10% 16, 17, 19, 31, 47 ZA W 4.7KQ +10% | 11 50WV 50PF +10% 2, 4, 13, 14, 30, 39 za WN 10 KQ +10% | 8, 14 50WV 250PF +10% 49 24 W 12 КО +10% © 10 50WV 470PF +10% 12 ZA W 18 KQ +10% 2 50WV 680PF +10% 43, 50 AW 22 КО +10% CERAMIC DISC 20, 40 ZW 33 КО +10% 9, 12, 13, 16, 17, 18, 19 50WV 0.01 nF ‘595% | 46 AW 39 KN +10% 21 50WV 0.047 uF 13% 18, 23, 48 AW 47 KQ +10% CERAMIC TC 27 AW 56 КО +10% 1 N750 SPF +0.5PF! 1,5 ZW 100 КО +10% 5 N750 7PF +0.5PF CARBON COMPOSITION 3 N750 20PF +10% 9 8 W 47 О +5% 54 BW 33 КО +10% VC VARIABLE CAPACITOR 33, 34 78 W 3.3MQ +10% | 1 B5240DS114 32 2 W 5.6MQ +10% 35 14 W 1 Мо +10% TC TRIMMER CAPACITOR METALIC FILM 1 AIR TSN-170C 10PFX2 | 15 2W 6.8 КО- 10% 2 АТВ TSN-150C 30 PF 36 THERMISTOR SDT-250 C CAPACITOR DIPPED MICA . PB-1387(A~Z) 5, 7, 8, 10 50W V 30PF +10% D DIODE 6, 11 50WV 40PF +10% 1,2 Si VO6B 1 50WV 100PF +10% 3, Si 151943 2 50WV 250PF +10% | 5-12 Si 10D10 4 500WV 2000PF +10% | | | PLASTIC FILM С CAPACITOR. 13, 28, 39, 41, 51 50WV 0.001 uF -+20% 2 50WV 0.047 uF "2%: 31, 45, 47, 58, 59 50WV 0.01 uF +20% 1,3,5 500WV 001 uF 209% 22, 23, 24 50WV 0.22 иЕ +20% ' 4 1.4KV _ 0.00474F 19% 35, 38, 44 50WV 0.047иЕ +20% - u 12, 27, 40, 52 5OWV 0.1 wF +20% R RESISTOR | CERMIC DISC CARBON FILM 3,9 -BOWV 0.01 мЕ 3% | 1-8 24 W 470K(? 10% | 56, 57, 61 50WV 0.047 uF + 80% WIRE WOUND ELECTROLYTIC 9 2 W 5.69 =10% 34, 36, 42, 62 16WV 1 uF 25, 32, 33, 37, 46, 50 16WV 10 uF 26 16WV 22 uF AMP 48 16WV 33 uF P.C.B. PB-1388(A—7) 14, 21, 29, 30, 43,53,63 16WV 100 uF PP PIN CONNECTOR | 49 . 16WV 220 uF 1 128-10-10-181 P 54, 55 16WV 1000 uF 15,16 25WV 1000 uF Q TRANSISTOR 19 160WV 22 uF 1 ZSK19GR 17, 18, 20 250WV 22 uF 2 Ic LD3141 R RESISTOR e ры es . os a u a a z a ; | E a, 7 l4 W 100 2 +10% P.C,B. PB-1386(A~Z) 5,6 24 W 1 Ко +10% Q TRANSISTOR 1,3 LE W 4.7KQ +10% 1 2SK19GR 4 а W 5.6KQ +10% 2 ра W 47 КО 10% D DIODE 1 VARACTOR 1S2236 C CAPACITOR PLASTIC FILM TC TRIMMER CAPACITOR 1 50WV 0.01 мЕ +20% 1,2 ECV1ZW50P40 50 PF 6 50WV 0.047 uF +20% DIPPED MICA L INDUCTOR 7 50WV 200PF +10% 1 RF CHOKE 250 «H ELECTROLYTIC 2 FIX OUTPUT COIL 2, 4, 5, 8, 9, 10 16WV 1иЕ 11, 13 16WV 22 uF R RESISTOR 3, 12 16WV 100 wF CARBON FILM 2 lew 47 Q +10% 1 lá W 220 О +10% С | 3, 5 ла W 100KQ +10% P.C.B. PB-1389(A~Z) L TUNING COIL C CAPACITOR 101 80METER BAND ANT COIL DIPPED MICA 102 40METER BAND ANT COIL 50WV 100PF +10% 103 20METER BAND ANT COIL 3 50WV 200PF +10% 104 15METER BAND АМТ COIL CERAMIC DISC 105 10METER BAND ANT COIL 1,4 50WV 0.01 uF +3% 106 80 METER BAND GRID COIL 2 50WV 0.047uF +3% 107 40 METER BAND GRID COIL 108 20METER BAND GRID COIL 109 15 METER BAND GRID COIL En ae eee, 110 1OMETER BAND GRID COIL P.C.B. | PB-1358(A—Z) L INDUCTOR C CAPACITOR 1 RF CHOKE 1.8 4H DIPPED MICA 120 OMHz TRAP COIL 27 50WV 1000РЕ +10% C CAPACITOR DIPPED MICA | 1 | 50WV 350PF +10% P.C.B PB-1390(A~Z) 2,3 50WV 680PF +10% LED LIGHT EM! DIODE 1,2, 3 GD-4-204 — ~ AL UE IST = © . +Ht | | LI. Of 1 | Q2 | я - Poor We oy <I + 7 ~ | X| BL. — | AMOSZ 653 TINO ZAA TRL < +R O a a IL SW | 5 po POZA = _ , > a & Tester = (au) m ARA ЕН ПЕ + 923 т À S U D S A oze Whey ¡E N | ` 190 ANGL 2018 i | м | И. | | | | : - | nm u ON Oft Wy NM < Се м лв "Га Г “9 y ore a \ . 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Key features
- SSB/CW/AM modes
- 80-10 meter amateur bands
- 260W SSB / 180W CW / 80W AM
- Built-in VOX and noise blanker
- 25/100 kHz calibrator
- Dual VFO adaptor
- Integrated speaker
Frequently asked questions
The FT-201 operates on amateur bands from 3.5 to 29.7 MHz (80 through 10 meters) and receives on 15 MHz (WWV).
The FT-201 supports USB/LSB (selectable), CW, and AM modes.
The CLARIFIER control provides a means for tuning the receiver frequency +3 KHz of the transmitting frequency.
Set the TUNING control to the 100 KHz point. Tune the PRESELECTOR for maximum noise. Tune the transceiver to the 100 KHz calibrator signal for zero beat.
Be sure that the voltage marked on the rear of the transceiver agrees with the local AC supply voltage.