RF Technology Pty KRE200A-AN Basestation User Manual

Eclipse Series

RF Technology

[email protected]

November 2001

R220 Receiver

Operation and Maintenance Manual

This manual is produced by RF Technology Pty Ltd.,

10/8 Leighton Place, Hornsby, 2077, Australia, and is

Copyright ©2001, RF Technology

Part No. PCB 30/9132

CONTENTS

Contents

1 Operating Instructions

1.1

Front Panel Controls and Indicators

1.1.1

Mon. Volume

1.1.2

1.1.3

1.1.4

Mon. Sq.

N. SQ

C. SQ

1.1.5

1.1.6

1.1.7

1.1.8

Line

PWR LED

SQ LED

Alarm LED

2 Receiver Internal Jumper Options

2.1

JP1: 240Hz Notch Filter

2.2

JP2: Audio Response

2.3

JP3: Audio Filter In/Out

2.4

JP4: 600

Ω

Line dc Loop COS

2.5

JP6: COS Polarity

2.6

JP7/8/9: dc Loop COS Configuration

2.7

JP7, JP8, JP9: Direct Output COS

2.8

JP11 EPROM Type

3 Receiver I/O Connections

3.1

25 Pin Connector

4 Channel and Tone Frequency Programming

5 Circuit Description

5.1

RF Section

5.2

IF Section

5.3

VCO Section

5.4

PLL Section

5.5

Audio Signal Processing

5.6

Noise Filter, Amplifier and Detector

5.7

Subtone Filter and CTCSS

5.8

External Squelch

5.9

Microprocessor Controller

5.10 Carrier Operated Switch

5.11 Voltage Regulator

6 Alignment Procedure

6.1

Standard Input Signal

6.2

RF Alignment

6.3

IF Alignment

6.4

Line Level Adjustment

6.5

Reference Oscillator Calibration

Page 2

CONTENTS

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6

RF Technology R220

CONTENTS

7 Specifications

7.1

General Description

7.1.1

7.1.2

Channel Capacity

CTCSS

7.1.3

7.1.4

Channel Programming

Channel Selection

7.1.5

Microprocessor

7.2

Physical Configuration

7.3

Front Panel Controls, Indicators and Test Points

7.3.1

Controls

7.3.2

7.3.3

Indicators

Test Points

7.4

Electrical Specifications

7.4.1

Power Requirements

7.4.2

7.4.3

Frequency Range and Channel Spacing

Frequency Synthesizer Step Size

7.4.14

7.4.15

7.4.16

7.4.17

7.4.18

7.4.19

7.4.20

7.4.21

7.4.22

7.4.4

7.4.5

7.4.6

7.4.7

7.4.8

7.4.9

7.4.10

7.4.11

7.4.12

7.4.13

Frequency Stability

Nominal Antenna Impedance

IF Frequencies

Sensitivity

Selectivity

Spurious and Image Rejection

Intermodulation

Modulation Acceptance BW

Noise Squelch

Carrier Level Squelch

Receiver Frequency Spread

Receiver Conducted Spurious Emissions

Audio Frequency Response

Audio Output Level

Audio Distortion

Channel Select Input/Output

Carrier Operated Switch Output

CTCSS

External Squelch Input

7.5

Connectors

7.5.1

Antenna Connector

7.5.2

7.5.3

Power and I/O Connector

Test Connector

CONTENTS

22

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23

25

22

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21

21

21

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20

20

21

21

21

22

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25

25

25

RF Technology R220 Page 3

CONTENTS

B Parts List

CONTENTS

Page 4 RF Technology R220

1 OPERATING INSTRUCTIONS

WARNING

Changes or modifications not expressly approved by RF Technology could void your authority to operate this equipment. Specifications may vary from those given in this document in accordance with requirements of local authorities. RF

Technology equipment is subject to continual improvement and RF Technology reserves the right to change performance and specification without further notice.

1 Operating Instructions

1.1 Front Panel Controls and Indicators

1.1.1

Mon. Volume

The Mon. Volume control is used to adjust the volume of the internal loudspeaker and any external speaker connected to the test socket. It does not effect the level of the 600

Ω

line or direct audio output.

1.1.2

Mon. SQ.

The Mon. SQ. switch allows all squelch functions controlling the monitor output to be disabled. When the switch is in the Mon. SQ. position the audio at the monitor speaker is controlled by the noise detector. The CTCSS, carrier and external squelch functions are disabled. This can be useful when you are trying to trace the source of on-channel interference or when setting the noise squelch threshold. the audio from the 600

Ω

line and direct outputs is not effected by the switch position.

1.1.3

N.SQ

The N.SQ trimpot is used to set the noise squelch sensitivity. Use the following procedure to set the noise squelch to maximum sensitivity.

1.

Set the toggle switch to the Mon. Sq. position and set the Mon. Volume control to 9 o’clock.


1.1

Front Panel Controls and Indicators 1.1 OPERATING INSTRUCTIONS

2.

Turn the N. SQ. adjustment counter clockwise until the squelch opens and noise is heard from the speaker. Adjust the VOLUME to a comfortable listening level.

3.

In the absence of any on channel signal, turn the N.SQ. screw clockwise until the noise in the speaker is muted. Then turn the screw two additional turns in the clockwise direction.

1.1.4

C.SQ

The C.SQ trimpot is used to set the carrier squelch sensitivity. Carrier squelch is useful at higher signal levels than those at which noise squelch and can be used typically from 1-200 µ V input.

It is provided mainly for use in fixed link applications where a high minimum signal to noise ratio is required or where very fast squelch operation is required for data transmission. The carrier squelch will open and close in less than 2 mSec.

In most base station applications carrier squelch is disabled by turning the adjustment counter clockwise until the screw clicks.

The carrier squelch may be set to a predetermined level with the Techelp/Service

Monitor 2000 software or by using the following procedure:

1.

First turn the adjustment fully counter-clockwise. Then set the noise squelch as above.

2.

Connect a source of an on channel signal with the desired threshold level to the receiver's RF input.

3.

Turn the screw clockwise until the SQ LED goes OFF. Then turn the screw back until the LED just comes ON.

1.1.5

LINE

The LINE trimpot is used to set the line and direct audio output level. It is normally set to give 0dBm (775mV) to line with a standard input signal equal to 60% of maximum deviation at 1 KHz. The level can be measured between test socket pins 6 and 1 and set as desired.

1.1.6

PWR LED

The PWR LED shows that the dc supply is connected to the receiver.

1.1.7

SQ LED

The SQ LED comes on when the audio to the line and direct outputs is un-squelched.


2 RECEIVER INTERNAL JUMPER OPTIONS

The LED and squelch function are controlled by noise, carrier and tone squelch circuits.

1.1.8

ALARM LED

The ALARM LED can indicate the detection of several different fault conditions by the self test circuits. The alarm indicator shows the highest priority fault present.

Receivers using software issue 5 and higher use the cadence of the LED flash sequence to indicate the alarm condition. Refer to table 1.

LED Flash Cadence

5 flashes, pause

4 flashes, pause

3 flashes, pause

1 flash, pause

LED ON continuously

Fault Condition

Synthesizer unlocked

Tuning voltage outside limits

Signal level below preset threshold (fixed link) dc supply voltage low or high

External squelch is active

Table 1: Interpretations of LED flash cadence

Receivers using software issue 4 and lower use the LED flash rate to indicate the alarm condition. Refer to table 2.

Indication

Flashing, 8 per second



Continuous

Fault condition

Synthesizer unlocked

Tuning voltage outside 2-7 Vdc

Signal level below preset threshold (fixed links) dc supply voltage low or high

Table 2: Interpretations of LED flash speed, for early models.

2 Receiver Internal Jumper Options

In the following subsections an asterisk (*) signifies the standard (Ex-Factory) configuration of a jumper.

2.1

JP1: 240 Hz Notch Filter

JP1 allows the 240Hz notch filter in the normal audio path to be bypassed.

Condition

Notch Filter In

Notch Filter Out

Position

1-2 *

2-3


2.2

JP2: Audio Response 2 RECEIVER INTERNAL JUMPER OPTIONS

2.2

JP2: Audio Response

Condition

750 uSec. de-emphasis

Flat response

Position

1-2 *

2-3

2.3

JP3: Audio Filter In/Out

JP3 bypasses the 300Hz high-pass filter and 240Hz notch filter if necessary.

Condition

Hi-pass, Notch In

Flat response

Position

2-3 *

1-2

2.4

JP4: 600

Ω

Line dc Loop COS

JP4 allows the dc return path through the output audio transformer to be broken, to permit dc signaling via the audio pair or wires.

Condition dc Loop Configured by JP7, JP8, JP9 dc Loop Not used

2.5

JP6: COS Polarity

Position

1-2 *

2-3

Condition

Active on Signal

Active on No Signal

Position

2-3 *

1-2

2.6

JP7, JP8, JP9: dc Loop COS Configuration (JP4 1-2)

These settings are relevant when the Carrier Operated Switch (COS) signal is to be used across the same wires as the audio. Refer to setting of JP4, in section 2.4. They control the levels and connection into the audio balanced line circuitry.

Condition JP7

Source +12 Vdc Loop 2-3

Free Switch Output 1-2

Page 8

JP8

ON

ON

JP9

1-2 *

2-3

RF Technology R220

2 RECEIVER INTERNAL JUMPER OPTIONS 2.7 JP7/8/9 Direct Output COS

2.7

JP7, JP8, JP9: Direct Output COS (JP4 2-3)

In this arrangement, the COS signal is taken via the separate COS+ and COSoutputs, either with free (floating) output or with +12Vdc pull-up.

Condition

+12 Vdc Direct

Output

Free Switch Output

2.8

JP7

2-3

1-2

JP11 EPROM Type

JP8

OFF

OFF

JP9

OFF

OFF

Condition

27C256

27C64

Position

2-3 *

1-2

* = Standard Ex-Factory Configuration


2 RECEIVER INTERNAL JUMPER OPTIONS

RX PCB TX PCB

The Receiver and Transmitter modules plug into the back plane DB25/F connectors

Miniature spade connectors (2.1 x 0.6 x 7mm) are captive/ soldered at the labelled points.

To configure: Solder wire connections between appropriate points .

Receiver

DB25/F

1, 14

2

15

3

16

4

17

5

18

6

20

8

13, 25

21

9

22

10

23

11

24

12

RX PCB DESCRIPTION

BCD 1

BCD 2

BCD 4

BCD 8

BCD 10

BCD 20

BCD 40

BCD 80

+12V +12V DC SUPPLY

TXD

RXD

TX Data

RX Data

COR+ Carrier Operate Sw+ PressToTalk input

COR Carrier Operate SwTx/Rx output

TONE Subtone output

AUDIO Audio output

Hi Z audio input+

Hi Z audio input-

AGND Audio Ground Ext tone input+

DISC Discriminator output Ext tone input-

LINE+ Line output+

LINELine output-

Line input+

Line input-

EXT SQ Ext Squelch input

GND

Auto Level Control

Ground, 0V

Channel select 1’s digit








BCD 1

BCD 2

BCD 4

BCD 8

BCD 10

BCD 20

BCD 40

BCD 80

TX PCB Transmitter

DB25/F

+12V 1, 14

TXD

RXD

PTT

T/R

2

15

3

16

AUD+

AUD-

TONE+

TONE-

LINE+

LINE-

ALC

GND

4

17

5

18

6

20

8

13, 25

21

9

22

10

23

11

24

12


3 RECEIVER I/O CONNECTIONS

3 Receiver I/O Connections

3.1 25 Pin Connector

3.1 25 Pin Connector

The D-shell 25 pin connector is the main interface to the receiver. The pin connections are described in table 3.

Function dc Power

Channel Select

RS232 Data

600

Ω

Line

150

Ω

/ Hybrid

Discriminator

Direct Audio Output

Audio Ground

Sub-Audible Audio

Out

Carrier Operated Sw

Carrier Operated Sw

External Squelch

-

+

Signal

2

4

8

10

20

40

80

+12

Vdc

-12

Vdc

1

In

Out

In

Out

Pins

1, 14

13, 25

Input

5

4

7

19

18

17

15

2

20

6

23

11

24

12

21

9

22

10

3

16

8

Specification

+11.4 to 16 Vdc

BCD Coded

0 = Open Circuit or 0 Vdc

1 = +25 to +16 Vdc

Test and Programming use

9600, 8 data 2 stop bits

Transformer Isolated

Balanced 0dBm Output

AC coupled, unsquelched

Direct AC Coupled Audio

Direct Audio Ground

Unsquelched, 1-250 Hz

Opto-coupled Transistor

Switch (10mA)

<1 Vdc to Squelch

>2 Vdc or open ckt to unsquelch

Table 3: Pin connections and explanations for the main, 25-pin,

D-shell Connector


4 FREQUENCY PROGRAMMING

Channel and tone frequency programming is most easily accomplished with RF

Technology TecHelp/Service Monitor 2000 software. This software can be run on an IBM compatible/Windows PC and provides a number of additional useful facilities.

TecHelp/Service Monitor 2000 allows setting of the adaptive noise squelch threshold, provides a simple means of calibrating the signal strength output and minimum signal alarm.

TecHelp/Service Monitor 2000 can be supplied by your dealer, distributor or by contacting RF Technology direct.

5 Circuit Description

The following descriptions should be read as an aid to understanding the block and schematic diagrams at the rear of this manual.

5.1

RF Section

A two pole voltage tuned filter (D13, D14, L35-39) is used to limit the RF band width prior to the RF amplifier transistor Q1. The tuning voltage is supplied by the frequency synthesizer through voltage follower U28D. The circuit values are chosen so that the centre frequency tracks the VCO frequency.

RF amplifier transistor Q1 is followed by a second two pole voltage tuned filter

(D15, D16, L28-32) which provides additional image and spurious frequency rejection. The filter output is connected to the RF input port of the mixer MX1.

MX1 is a high level double balanced diode ring mixer with excellent intermodulation performance. It has a conversation loss of approximately 6 dB. The gain between the receiver input and the mixer input is approximately 10 dB so that the total gain between the antenna input and the IF input 3-4dB.

Monolithic amplifiers MA1, MA2 and transistor Q5 amplify the VCO output to the necessary LO level for MX1 approximately +13dBm.

The network C8, C9 L1-3 and R6 passes the IF frequency of 45 MHz and terminates the RF and LO components.

5.2

IF Section

The first IF amplifier uses two parallel connected JFET transistors Q2 and Q3 to obtain 8-10 dB gain. The two transistors provide improved dynamic range and input matching over a single transistor.


5 CIRCUIT DESCRIPTION 5.2 IF Section

A two pole 45 MHz crystal filter XF1 is used between the first and second IF amplifiers. The second IF amplifier Q4 provides additional gain of 6-10dB. A two pole crystal filter is used between Q4 and the 2nd oscillator mixer. These two crystal filters provide some adjacent channel rejection and all of the second IF image frequency rejection.

U1 is a monolithic oscillator and mixer IC. It converts the 45 MHz IF signal down to

455 KHz. The second oscillator frequency or 45.455 MHz is controlled by crystal

Y1. The 455 KHz output of the second mixer is fed through a ceramic filter CF1 to the second IF amplifier transistor Q27. Q27 provides an additional 15 dB gain ahead of the limiter and discriminator IC U3.

The limiter/discriminator IC U3 further amplifies the signal and passes it through

CF2. CF2 does not contribute to the adjacent channel rejection but is used to reduce the wide band noise input to the limiter section of U3.

The limiter section of U3 drives the quadrature detector discriminator. C31 and IF tuned circuit L10 comprise the discriminator phase shift network.

U3 also has a received signal strength indicator output (RSSI). The RSSI voltage connects to the test socket for alignment use. The RSSI voltage is also used by the microprocessor for the adaptive noise squelch, carrier squelch and low signal alarm functions.

Dual op-amp U2 is used to amplify and buffer the discriminator audio and RSSI outputs.

5.3

VCO Section

The Voltage Controlled Oscillator uses a junction FET Q6 which oscillates at the required mixer injection frequency. Varactor diode D4 is used by the PLL circuit to keep the oscillator on the desired frequency. Transistor Q7 is used as a filter to reduce the noise on the oscillator supply voltage.

5.4

PLL Section

The synthesizer frequency reference is supplied by a temperature compensated crystal oscillator (XO1). The frequency stability of the oscillator is better than 1 ppm.

The 12 MHz output of Q25 or XO1 is amplified by Q8 to drive the reference input of the PLL synthesizer IC U4. This IC is a single chip synthesizer which includes a

1.1 GHz pre-scaler, programmable divider, reference divider and phase/frequency detector. The frequency data is entered a serial data link from the microprocessor.

The phase detector output signals of U4 are used to control two switched current sources. The output of the positive and negative sources' Q10 and Q16, produce the tuning voltage which is smoothed by the loop filter components to bias the VCO varactor diode D4.


5.5 Audio Signal Processing 5 CIRCUIT DESCRIPTION

5.5

Audio Signal Processing

A 4 KHz low pass filter (U27b) is used to remove high frequency noise from the signal. A 300 Hz high pass filter (U26a,b) then removes the sub-audible tones. A 240

Hz notch filter (U26c,d) is used to improve the rejection of tones above 200 Hz. The high pass and notch filters can be bypassed by internal jumpers JP1 and JP3.

The audio frequency response can be set for either 750 uS de-emphasis or a flat characteristic by JP2. JP2 selects the feedback network of amplifier U27c.

After de-emphasis and filtering, the audio signal is applied to the inputs of two analog switches (U17a,b). These switches are controlled by the micro-controller and squelch or mute the audio to the line and monitor output circuits. The monitor output can be set for noise squelch only operation by S1.

The audio from U17a is adjusted by the volume control before connecting to the monitor output amplifier U5. U5 drives the internal speaker and can also supply 3-5 watts to an external loudspeaker.

The audio from U17b is adjusted by RV3 before connecting to the line output IC

(U22a,b). U22 is a dual amplifier connected in a bridge configuration to drive the

600

Ω

line output transformer T1.

5.6

Noise Filter, Amplifier and Detector

The unfiltered audio from the discriminator is fed to trimpot RV4 which is used to set the noise squelch threshold. From RV4 the audio goes to the noise filter (U27a).

This is a 10 KHz high pass filter and is used to eliminate voice frequency components.

The noise signal is then amplified by U27d and fed to the noise detector. The noise detector consists of D6, Q17 and U26c. D6 and Q17 are a charge pump detector and pull the input to U26c low as the noise increases. U26c has positive feedback and acts like a schmitt trigger. The output of U26c goes high when noise is detected. It connects to the micro-controller and to analog switch U17d. U17d varies the gain of the noise amplifier to provide approximately 2dB hysteressis.

5.7

Sub-Tone Filter and CTCSS

The discriminator audio is fed through cascaded low pass filters U28a and U28b to filter out the voice frequency components. The filtered sub-tone audio is supplied to the CTCSS hybrid and the rear panel system connector. The filtered output can be used for re-transmission of CTCSS or DCS.

The CTCSS decoder module is a micro-controller base hybrid module. Under control of the main microprocessor U15 it can decode all 38 EIA tones and 12 additional commonly used tones. The decode bandwidth is set to 1% but may be changed to 2% by a jumper on the printed circuit board.


5 CIRCUIT DESCRIPTION 5.8 External Squelch

5.8

External Squelch

The audio output can be muted through pin 8 of the receiver system connector P1.

When pin 8 is pulled to less than 1 volt above ground, the micro-controller U15 will mute the audio output.

This facility can be used to mute the audio during transmission, as is required in single frequency systems, by simply connecting pin 8 of the receiver to the transmitter T/R relay driver output (pin 16 on Eclipse transmitters).

5.9

Microprocessor Controller

The microprocessor controller circuit uses an advanced eight bit processor and several support chips. The processor U15 includes EE memory for channel frequencies, tones, and other information. It also has an asynchronous serial port and an analog to digital converter.

The program is stored in U12, a CMOS EPROM. U13 is an address latch for the low order address bits. U11 is used to read the channel select lines onto the data bus. U7 is an address decoder for U11 and U12. U14 is a supervisory chip which keeps the processor reset unless the +5 Volt supply is within operating limits. U16 translates the asynchronous serial port data to standard RS232 levels.

The analog to digital converter is used to measure the received signal strength, tuning voltage, dc supply voltage and the carrier squelch setting.

5.10

Carrier Operated Switch

The carrier operated switch is an opto-coupled (ISO1) output. Internal jumpers

(JP4,7,8,9) can be connected to provide loop source, loop switch, free switch and various other configurations.

The COS can be set to be active (switch closed) on carrier or active in the absence of carrier.

The generic term ``Carrier Operated Switch'' may be misleading in this case. SINCE, if a sub-audible tone has been programmed for the channel in use, the COS is controlled by carrier and tone detection.


5.11 Voltage Regulator 5 CIRCUIT DESCRIPTION

5.11

Voltage Regulator

The dc input voltage is regulated down to 9.4 Vdc by a discrete regulator circuit. The series pass transistor Q20 is driven by error amplifiers Q21 and Q22. Q23 is used to start up the regulator and once the circuit turns on, it plays no further part in the operation.

This circuit is short circuit and overload protected. It provides much better line isolation and lower dropout voltage than can be obtained with current integrated circuit regulators.

6 Alignment Procedure

The following procedures may be used to align the receiver for optimum performance. Normally only RF alignment will be required when changing frequencies. IF alignment should only be necessary after repairs on that part of the circuit.

Reference oscillator or TCXO calibration may be required periodically due to crystal aging. The aging should be less than 1 ppm/year.

6.1

Standard Input Signal

RF Signal Generator

50

Ω

output impedance

Frequency range 215 - 240 MHz

FM modulation at 1KHz

1.5KHz peak for 12.5KHz channel spacing

6.2

RF Alignment

Alignment Frequency

215 - 240 MHz range 221.000 MHz


6 ALIGNMENT PROCEDURE 6.3 IF Alignment

Step

1

2

3

Input

Select alignment frequency channel

Signal generator on centre frequency channel to J1.

Modulation off.


Modulation off.

Measure dc Volts on test socket pin 9 to pin 1 dc Volts on test socket pin 7 to pin 1

Adjust

L34 to read 4.00Vdc

Generator level to read 1 - 2 Vdc dc Volts on test socket pin 7 to pin 1

L29, 31, 36, 38 for maximum reading.

Reduce generator output to keep below

2 Vdc

6.3

IF Alignment

Step

1

2

3

4

5

6

7

Input

Signal generator on center frequency channel to J1.

Modulation OFF

Signal generator on center frequency channel to J1.

Modulation OFF

Set generator level to

10

µ

V


1 millivolt.

Modulation ON.


1 millivolt.

Modulation ON.


1 millivolt.

Modulation ON.

Set generator level to approx. 25

µ

V

Measure dc Volts in test socket pin 7 to pin 1

Adjust

Generator level to read 1 - 2 Vdc dc Volts in test socket pin 7 to pin 1

Frequency U3 pin 9

Audio level test socket pin 6 to pin 1


L5, L6, L7, L8 for maximum reading.

Reduce generator output to keep below

2 Vdc

L9 to read 455 KHz

+/- 10Hz

Line level (RV3) to obtain approx. 1

Vrms

L10 for maximum

Audio level P1 pin 18 to pin 5

SINAD on test socket pin 6 to pin 1

RV1 for .5 Vrms

Reduce generator level to obtain 12 Db

SINAD. Carefully adjust L5, L6, L7, L8 to obtain the best

SINAD. Reduce generator output to maintain 12 dB

SINAD


6.4

Line Level Adjustment

6.4

Line Level Adjustment

Step

1

Input


Modulation ON.

Level 1 millivolt

6 ALIGNMENT PROCEDURE

Measure


Adjust

RV3 for 390 mV rms

6.5

Reference Oscillator Calibration

Step

1

Input

None required

Measure

Frequency junction of

R69 and R26 on the top of the PCB. (LO input to the mixer)

Adjust

C181 or XO1 for L.O.

+/-100 Hz

L.O. = Fc+45 MHz

7 Specifications

7.1

General Description

The receiver is a high performance, frequency synthesized, narrow band FM unit which can be used in conjunction with transmitter and power supply modules as a base station or as a stand alone receiver. All necessary control and 600

Ω

line interface circuitry is included.

7.1.1

Channel Capacity

Although most applications are single channel, it can be programmed for up to 100 channels numbered 0-99. This is to provide the capability of programming all channels into all of the receivers used at a given site.

7.1.2

CTCSS

The CTCSS tone or no tone can also be programmed for each channel. So that each channel number can represent unique RF and tone frequency combination.

7.1.3

Channel Programming

The channelling information is stored in a non-volatile memory chip and can be programmed via the front panel test connector using a PC and RF Technology supplied TecHelp/Service Monitor 2000 software.


7 SPECIFICATIONS 7.1.4 Channel Selection

7.1.4

Channel Selection

Channel selection is by eight channel select lines. These are available through the rear panel connector.

A BCD active high code applied to the lines selects the required channel. This can be supplied by pre-wiring the rack connector so that each rack position is dedicated to a fixed channel.

BCD switches inside the receiver can be used to pre-set any desired channel. These eliminate the need to externally select the channel.

7.1.5

Microprocessor

A microprocessor is used to control the synthesizer and squelch functions and facilitate the channel frequency programming. With the standard software it also can provide fault monitoring and reporting.

7.2

Physical Configuration

The receiver is designed to fit in a 19 inch rack mounted frame. The installed height is 4 RU (178 mm) and the depth 350 mm. The receiver is 63.5 mm or two Eclipse modules wide.

7.3

Front Panel Controls, Indicators and Test Points

7.3.1

Controls

Mute defeat switch - toggle (Overrides CTCSS, noise and carrier squelch at the monitor output)

Monitor Speaker Volume - Knob

Line Output Level - screwdriver adjust multiturn pot

Noise Squelch Setting - screwdriver adjust multiturn pot

Carrier Squelch Setting - screwdriver adjust multiturn pot

7.3.2

Indicators

Power ON - Green LED

Squelch Open - Yellow LED

Fault Indicator - Flashing Red LED


7.3.3 Test Points

7.3.3

Test Points

Line Output Level - 1 + Gnd

Receive Signal Strength - 1 + Gnd

Tuning Voltage - 1 + Gnd

Serial Data (RS232) - 2 + Gnd

7.4

7.4.1

Electrical Specifications

Power Requirements

Operating Voltage - 10.5 to 16 Vdc

Current Drain - 250mA Max.

Polarity - Negative Ground

7.4.2

Frequency Range and Channel Spacing

215 – 240 MHz 12.5KHz

7.4.3

Frequency Synthesizer Step Size

5.0 or 6.25 KHz

7.4.4

Frequency Stability

+/- 1 ppm, 0 to +60 C

7.4.5

50

Ω

Nominal Antenna Impedance

7 SPECIFICATIONS


7 SPECIFICATIONS

7.4.6

IF Frequencies

First IF frequency 45 MHz

Second IF frequency 455 KHz

7.4.7

Sensitivity

-120 dBm Max. for 12 dB SINAD

-117 dBm Max. for 20 dB Quieting

7.4.6 IF Frequencies

7.4.8

Selectivity

12 KHz spacing - 70dB per ECR-235

Spurious and Image Rejection 7.4.9

90dB

7.4.10

Intermodulation

80dB

Modulation Acceptance BW 7.4.11

12.5 KHz spacing - 3.75 KHz per RS204C

7.4.12

Noise Squelch

Adjustment Range: 6 - 18 dB SINAD

Attack Time:

Release Time:

20 mSec. above 20dB Quieting

150 mSec. at 20dB Quieting decreasing to 20ms above 2

µ

V preset threshold

Hysteresis: Hysteresis is equal to approximately 2dB change in noise quieting


7.4.13 Carrier Level Squelch 7 SPECIFICATIONS

7.4.13

Carrier Level Squelch

Carrier level squelch can be used when it is necessary to set the opening point above

26dB SINAD as may be required in link applications. The minimum adjustment range is 1 to 200

µ

V.

7.4.14

Receiver Frequency Spread

Less than 1 dB change in sensitivity over the band

7.4.15

Receiver Conducted Spurious Emissions

Less than -57dBm from 1 to 2900 MHz

7.4.16

Audio Frequency Response

600

Ω

Line and Direct Output: +1/-3dB 300-3000 Hz relative to either a flat response or 750

µ s de-emphasis with the high pass and notch filters bypassed.

+1/-6 dB with the filters in circuit.

Sub-Audio Output: +1/-3dB 67-250 Hz

7.4.17

Audio Output Level

600

Ω

Line: Adjustable -10 to +10dBm

Monitor Loudspeaker: 5 Watts with external speaker, 0.3 Watt with internal speaker

Discriminator and Sub-Audio : Nominally equal to 1 volt peak at rated system deviation

7.4.18

Audio Distortion

750

µµµµ s De-Emphasis: Less than 3% at 1 KHz and 60% of rated system deviation

Flat Response: Less than 5% at 1 KHz and 60% of rated system deviation

7.4.19

Channel Select Input/Output

Coding : 8 lines BCD coded 00-99


7 SPECIFICATIONS 7.4.20 Carrier Operated Switch Output

Logic Input Levels: 0 = < 0.4 Volts

1 = > 3.5 Volts

Internal 10K pull down resistors selects Channel 00 when all inputs are O/C.

7.4.20

Carrier Operated Switch Output

Floating Opto-Coupler Output: The carrier operated switch output is via an optocoupler. Collector and emitter connections are available to allow connection for source or sink.

The opto-coupler can be linked inside the receiver to be on when a carrier is detected or to be on in the absence of carrier.

Connection to Remote Switch via 600

Ω

Line: Internal connections are provided so that the opto-coupler can be connected to the 600

Ω

line for use over a single pair.

This permits remote switching with no extra connections.

Current Source/Sink, Collector Voltage: The COS output is implemented with an optocoupler whose ratings are:\\

Ic = 10mA Maximum

Vc = 30 Volts Maximum

7.4.21

CTCSS

The CTCSS decoding is provided by a hybrid module. This provides programmable decoding of all 38 EIA and 12 other common tones. Refer to table 4.


7.4.21 CTCSS

Frequency

No Tone

151.4

156.7

159.8

162.2

165.5

167.9

171.3

173.8

114.8

118.8

123.0

127.3

131.8

136.5

141.3

146.2

88.5

91.5

94.8

97.4

100.0

103.5

107.2

110.9

67.0

69.4

71.9

74.4

77.0

79.7

82.5

85.4

203.5

206.5

210.7

218.1

225.7

229.1

233.6

241.8

250.3

254.1

177.3

179.9

183.5

186.2

189.9

192.8

196.6

199.5

Table 4: Tone Squelch Frequencies

Page 24

EIA Number

A8

B8

A9

B9

A10

B10

A6

B6

A7

B7

A4

B4

A5

B5

A11

B11

A1

B2

C3

A3

C4

B3

B1

C1

A2

C2

A12

B12

A13

B13

A14

B14

A15

B15

A16

B16

A17

7 SPECIFICATIONS

RF Technology R220

7 SPECIFICATIONS 7.4.22 External Squelch Input

7.4.22

External Squelch Input

An external input is provided to squelch or mute the receiver audio output. This may be used in conjunction with an external decoder or to mute the receiver during transmissions.

External Squelch Input can be connected to the T/R Relay pin on Eclipse transmitters mute the receiver during transmission.

7.5 Connectors

7.5.1

Antenna Connector

Type N Female Mounted on the module rear panel

7.5.2

Power & I/O Connector

25-pin ``D'' Male Mounted on the rear panel

7.5.3

Test Connector

9-pin ``D'' Female mounted on the front panel

A Engineering Diagrams

A.1

Circuit diagram

Figure 1 shows the detailed schematic diagram with component numbers and values


B Parts List

C1 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C10 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C100 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C101 CAP 4N7 10% COG RAD.2

46/2000/04N7

C102 CAP 27P 2% 100V NPO RAD.1

45/2680/027P

C103 CAP 1N5 10% 50V COG RAD.2

46/2000/01N5

C104 CAP 100N 5% 50V MKT RD.2

47/2007/100N

C105 CAP 470U 25V RB ELECTRO

41/2001/470U

C106 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C107 CAP 10N 1% 63V KP7.5

47/2007/010N

C108 CAP 10N 1% 63V KP7.5

47/2007/010N

C109 CAP 10N 1% 63V KP7.5

47/2007/010N

C11 CAP 47P 2% 100V NPO RAD.1

45/2680/047P

C110 CAP 10N 1% 63V KP7.5

47/2007/010N

C111 CAP 1UO 10% 50V MKT

47/2007/01U0

C112 CAP 10N 1% 63V KP7.5

47/2007/010N

C113 CAP 10N 1% 63V KP7.5

47/2007/010N

C114 CAP 10N 1% 63V KP7.5

47/2007/010N

C115 CAP 10N 1% 63V KP7.5

47/2007/010N

C116 CAP 10N 1% 63V KP7.5

47/2007/010N

C117 CAP 10N 1% 63V KP7.5

47/2007/010N

C118 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0


41/2001/047U

C12 CAP 33P 2% 100V NPO RAD.1

45/2680/033P

C120 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

C121 CAP 2N2 5% 400V MKT RAD.2

47/2040/02N2

C122 CAP 15N 5% 400V MKT RAD.2

47/2040/015N

C123 CAP 33N 5% 400V MKT RAD.2

47/2040/033N

C124 CAP 6N8 10% 400V MKT RD.2

47/2040/06N8

C125 CAP 10N 10% 400V MKT RD.2

47/2040/010N

C126 CAP 100N 10% 50V X7R RD.2

46/2001/100N


41/2001/470U

C128 CAP 100N 10% 50V X7R RD.2

46/2001/100N


41/2001/047U

C13 CAP 33P 2% 100V NPO RAD.1

45/2680/033P


41/2001/470U

C131 CAP 1UO 10% 50V MKT

47/2007/01U0

C132 CAP 1UO 10% 50V MKT

47/2007/01U0

Page 26

C133 CAP 1UO 10% 50V MKT

47/2007/01U0

C134 CAP 2U2 10% 100V MKT RD.2

47/2010/02U2

C135 CAP 100N 10% 50V X7R RD.2

46/2001/100N


41/2001/470U

C137 CAP 10U 35V RAD ELECTRO

41/2001/010U

C138 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C139 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C14 CAP 100N 10% 63V X7R 1206

46/3310/100N

C140 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C141 CAP 10N 10% 50V X7R RAD.2

46/2001/010N


41/2001/010U


41/2001/010U


41/2001/010U


41/2001/010U

C146 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C147 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C148 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C149 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

C15 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

C150 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

C151 CAP 100N 10% 50V X7R RD.2

46/2001/100N


41/2001/470U

C153 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C154 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C155 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C156 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

C157 CAP 18P 2% 100V NPO RAD.1

45/2680/018P

C158 CAP 18P 2% 100V NPO RAD.1

45/2680/018P


41/2001/010U

C16 CAP 33P 2% 100V NPO RAD.1

45/2680/033P

C160 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C161 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C162 CAP 10N 10% 50V X7R RAD.2

46/2001/010N


41/2001/010U


41/2001/010U

C165

C166 CAP 10N 10% 50V X7R RAD.2

46/2001/010N


41/2001/010U

C169 CAP 10P 5% 63V NPO SM1206

RF Technology R220

46/3300/010P

C17 CAP 33P 2% 100V NPO RAD.1

45/2680/033P

C170 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C171 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C172 CAP 47P 5% 63V NPO SM1206

46/3300/047P

C173

C174

C175 CAP 10P 5% 63V NPO SM1206

46/3300/010P

C176 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C177 CAP 47P 5% 63V NPO SM1206

46/3300/047P

C178

C179

C18 CAP 33P 2% 100V NPO RAD.1

45/2680/033P

C180 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C185 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C186 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C187 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C188 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C19 CAP 33P 2% 100V NPO RAD.1

45/2680/033P

C2 CAP 100N 10% 63V X7R 1206

46/3310/100N

C20 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C21 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C22 CAP 10P 2% 100V NPO RAD.1

45/2680/010P

C23 CAP 33P 2% 100V NPO RAD.1

45/2680/033P

C24 CAP 22P 2% 100V NPO RAD.1

45/2680/022P

C25 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C26 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C27 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C28 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C29 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C3 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0


41/2001/010U

C31 CAP 10P 2% 100V NPO RAD.1

45/2680/010P

C32 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C33 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C34 CAP 100P 2% 100V NPO RAD1

45/2680/100P

C35 CAP 100N 10% 50V X7R RD.2

46/2001/100N


41/2001/047U

C37 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C38 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

C39 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C4 CAP 100N 10% 63V X7R 1206

46/3310/100N

C40 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0


RF Technology R220

41/2001/010U

C42 CAP 33P 2% 100V NPO RAD.1

45/2680/033P

C43 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C44 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C45 CAP 15P 5% 63V NPO SM1206

46/3300/015P

C46 CAP 15P 5% 63V NPO SM1206

46/3300/015P

C47 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C48 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C49 CAP 100N 10% 63V X7R 1206

46/3310/100N

C5 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C50 CAP 56P 5% 63V NPO SM1206

46/3300/056P

C53 CAP 100N 10% 63V X7R 1206

46/3310/100N

C54 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C55 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C56 CAP

C57 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0


41/2001/010U

C60 CAP 27P 5% 63V NPO SM1206

46/3300/027P

C62 CAP 100P 5% 63V NPO 1206

46/3300/100P

C63 CAP 100P 5% 63V NPO 1206

46/3300/100P

C64 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C65 CAP 100N 10% 63V X7R 1206

46/3310/100N

C66 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C67 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C68 CAP 100N 10% 63V X7R 1206

46/3310/100N

C69 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C7 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C70 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C71 CAP 47P 2% 100V NPO RAD.1

45/2680/047P

C72 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C73 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C74 CAP 100N 10% 63V X7R 1206

46/3310/100N

C75 CAP 100N 10% 63V X7R 1206

46/3310/100N

C76 CAP 100N 10% 50V X7R RD.2

46/2001/100N


41/2001/010U

C78 CAP 4N7 10% COG RAD.2

46/2000/04N7

C79 CAP 47N 20% 50V X7R RD.2

46/2001/047N

C8 CAP 56P 5% 63V NPO SM1206

46/3300/056P

C80 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C81 CAP 10N 10% 50V X7R RAD.2

46/2001/010N

C82 CAP 47N 20% 50V X7R RD.2

46/2001/047N

C83 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

Page 27

C84 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C85 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C86 CAP 1N0 5% 63V NPO SM1206

46/3300/01N0

C87 CAP 4P7 5% 63V NPO SM1206

46/3300/04P7

C88 CAP 100N 10% 63V X7R 1206

46/3310/100N

C89 CAP 100N 10% 50V X7R RD.2

46/2001/100N

C9 CAP 68P 5% 63V NPO SM1206

46/3300/068P

C90 CAP 1N2 5% NPO RAD.2

46/2000/01N2

C91 CAP 1UO 10% 50V MKT

47/2007/01U0

C92 CAP 100N 5% 50V MKT RD.2

47/2007/100N

C93 CAP 22N 10% 63V MKT RAD.2

47/2007/022N

C94 CAP 1N2 5% NPO RAD.2

46/2000/01N2

C95 CAP 100N 5% 50V MKT RD.2

47/2007/100N

C96 CAP 22N 10% 63V MKT RAD.2

47/2007/022N


41/2001/047U

C98 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

C99 CAP 1N0 5% 100V NPO RAD.2

46/2000/01N0

CF2 FILTER CERAMIC CFU455B

34/2000/CFUB

D1 DIO ZEN 5V1 BZX84C5V1 SOT

21/3040/C5V1

D10 DIODE 8V2 ZENER

21/1040/B8V2

D11 DIODE LED RED RT ANG MTG

21/1010/LEDR

D12 DIODE LED GRN RT ANG MTG

21/1010/LEDG

D13 DIO VCAP MMBV432L SOT23

21/3060/V432


21/3060/V432


21/3060/V432


21/3060/V432

D17 DIODE SILICON IN4148

21/1010/4148

D2 DIO BAND SW BA682 SOD80

21/3050/0682

D3 DIO SHTKY BAT17 SOT23

21/3030/0017


21/3060/V432


21/1010/4148


21/1010/4148

D7 DIODE LED YEL RT ANG MTG

21/1010/LEDY

D8 DIO ZEN 1N4751 30V 1W AXI

21/1040/4751

D9 DIODE 3AMP 1KV RECTIFIER

21/1080/5408

H1 HYBRED CTCSS

18/1000/1752

ISO1 IC OPTO-ISOLATOR 4N35

25/1010/4N35

JP1 CON 3WAY HEADER

35/2501/0003


35/2501/0003


35/2501/0002


35/2501/0003

Page 28


35/2501/0003


35/2501/0003


35/2501/0003


35/2501/0003


35/2501/0002


35/2501/0003

L1 IND 220N 10% CHOKE SM1008

37/3320/220N

L10 INDUCTOR VAR 455KHz 10mm

37/2031/97HM

L11 IND 3U3 10% CHOKE SM1008

37/3320/03U3

L12 INDUCTOR 1uH AXIAL

37/2021/001U

L13 IND 39N 10% CHOKE SM1008

37/3320/039N

L14 IND 220N 10% CHOKE SM1008

37/3320/220N

L15 IND 18N 10% CHOKE SM1008

37/3320/018N

L16 IND 220N 10% CHOKE SM1008

37/3320/220N

L17 FERRITE BEAD SMD

37/3321/LM31

L18 IND 3U3 10% CHOKE SM1008

37/3320/03U3

L19 RES 33K 5% .25W SM1206

51/3380/033K

L2 IND 220N 10% CHOKE SM1008

37/3320/220N

L20 IND 3U3 10% CHOKE SM1008

37/3320/03U3


37/3321/LM31


37/3321/LM31

L23 INDUCTOR 150mH 10RBH

37/2021/1RBH

L24 IND 6 HOLE FERRITE RFC

37/1021/0001


37/3321/LM31


37/2021/001U

L27 IND 3U3 10% CHOKE SM1008

37/3320/03U3

L28 IND 8N2 10% CHOKE SM1008

37/3320/08N2

L3 IND 220N 10% CHOKE SM1008

37/3320/220N

L30 IND 680N 10% CHOKE SM1008

37/3320/680N

L32 IND 8N2 10% CHOKE SM1008

37/3320/08N2

L33 IND 3U3 10% CHOKE SM1008

37/3320/03U3

L35 IND 8N2 10% CHOKE SM1008

37/3320/08N2

L37 IND 680N 10% CHOKE SM1008

37/3320/680N

L39 IND 8N2 10% CHOKE SM1008

37/3320/08N2


37/2021/001U


37/2021/001U

L41

L42 IND 220N 10% CHOKE SM1008

37/3320/220N

L5 INDUCTOR 680N 10mm

37/2021/680N


37/2021/680N


37/2021/680N


RF Technology R220

37/2021/680N

L9 INDUCTOR 1.5u 10mm

37/2021/1.5U

MA1 AMP MMIC MWA0211L SOT143

24/3010/211L

MA2 AMP MMIC VAM-6

24/3010/VAM6


24/3010/211L


24/3010/211L

MX1 MIXER RFMX 1-13

37/2070/0113

P1 FILT D RT AGL 25W M 1NF

35/5011/025M

P2 FILT D RT AGL 9W F FERRIT

35/5012/009F

PROG. IC EPROM 27C256

26/2090/C256

Q1 TRSTR NPN MRF9511 SOT143

27/3020/9511

Q10 TRSTR GP PNP 2N3906 TO92

27/2010/3906

Q11 TRSTR GP PNP MPS3640

27/2010/3640

Q12 TRSTR GP NPN 2N3904 TO92

27/2020/3904

Q13 TRSTR GP PNP MPS3640

27/2010/3640

Q14 TRSTR GP NPN MPS2369 TO92

27/2010/2369


27/2020/3904

Q16 TRSTR GP PNP 2N3906 TO92

27/2010/3906


27/2020/3904


27/2020/3904


27/2020/3904

Q2 FET NJ J309 TO92M

27/2030/J309

Q20 TRSTR PNP MJF6107 TO22O

27/2010/6107


27/2020/3904


27/2020/3904

Q23 FET NJ 2N5459 TO92M

27/2030/5459


27/2020/3904


27/2020/3904


27/2020/3904

Q3 FET NJ J309 TO92M

27/2030/J309

Q4 FET NJ 2N5484 TO92M

27/2030/5484

Q5 TRSTR RF NPN MRF5812 SO8

27/3020/5812

Q6 FET NJ MMBFJ309 SOT23

27/3030/J309


27/2020/3904

Q8 TRSTR GP NPN MPS2369 TO92

27/2010/2369


27/2020/3904

R1 RES 220 5% 0.25W SM1206

51/3380/0220

R10 RES 150 5% 0.25W AXIAL

51/1040/0150

R100 RES 10M 5% 0.25W AXIAL

51/1040/010M

R101 RES 6K49 1% 0.25W AXIAL

51/1010/6K49

R102 RES 28K7 1% 0.25W AXIAL

51/1010/28K7

RF Technology R220

R103 RES 562K 1% 0.25W AXIAL

51/1010/562K

R104 RES 28K7 1% 0.25W AXIAL

51/1010/28K7

R105 RES 6K49 1% 0.25W AXIAL

51/1010/6K49

R106 RES 562K 1% 0.25W AXIAL

51/1010/562K

R107 RES 75K 1% 0.25W AXIAL

51/1010/075K

R108 RES 10K 5% 0.25W AXIAL

51/1040/010K

R109 RES 3K57 1% 0.25W AXIAL

51/1010/3K57

R11 RES 5K6 5% 0.25W AXIAL

51/1040/05K6

R110 RES 3K57 1% 0.25W AXIAL

51/1010/3K57

R111 RES 3K57 1% 0.25W AXIAL

51/1010/3K57

R112 RES 10K 5% 0.25W AXIAL

51/1040/010K

R113 RES 390 5% 0.25W AXIAL

51/1040/0390

R114 RES 10K 5% 0.25W AXIAL

51/1040/010K

R115 RES 39 5% 0.25W AXIAL

51/1040/0039

R116 RES 220 5% 0.25W AXIAL

51/1040/0220

R117 RES 10 5% 0.25W AXIAL

51/1040/0010

R118 RES 2R2 5% 0.25W AXIAL

51/1040/02R2

R119 RES 10K 5% 0.25W AXIAL

51/1040/010K

R12 RES 150 5% 0.25W AXIAL

51/1040/0150

R120 RES 330 5% 0.25W AXIAL

51/1040/0330

R121 RES 33K 5% 0.25W AXIAL

51/1040/033K

R122 RES 270 5% 0.25W AXIAL

51/1040/0270

R123 RES 2K2 5% 0.25W AXIAL

51/1040/02K2

R124 RES 2K2 5% 0.25W AXIAL

51/1040/02K2

R125 RES 680 5% 0.25W AXIAL

51/1040/0680

R126 RES 680 5% 0.25W AXIAL

51/1040/0680

R127 RES 680 5% 0.25W AXIAL

51/1040/0680

R128 RES 1K5 5% 0.25W AXIAL

51/1040/01K5

R129 RES 6K8 5% 0.25W AXIAL

51/1040/06K8

R13 RES 12K 5% 0.25W AXIAL

51/1040/012K

R130 RES 680 5% 0.25W AXIAL

51/1040/0680

R131 RES 10K 5% 0.25W AXIAL

51/1040/010K

R132 RES 51K1 1% 0.25W AXIAL

51/1010/51K1

R133 RES 274K 1% 0.25W AXIAL

51/1010/274K

R134 RES 10K 5% 0.25W AXIAL

51/1040/010K

R135 RES 10K 5% 0.25W AXIAL

51/1040/010K

R136 RES 10K 5% 0.25W AXIAL

51/1040/010K

R137 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R138 RES 5K11 1% 0.25W AXIAL

51/1010/5K11

R139 RES 47 5% 0.25W AXIAL

51/1040/0047

R14 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

Page 29

R140 RES 680 5% 0.25W AXIAL

51/1040/0680

R141 RES 4K7 5% 0.25W AXIAL

51/1040/04K7

R142 RES 10M 5% 0.25W AXIAL

51/1040/010M

R143 RES 4K7 5% 0.25W AXIAL

51/1040/04K7

R144 RES 4K7 5% 0.25W AXIAL

51/1040/04K7

R145 RES 4K7 5% 0.25W AXIAL

51/1040/04K7

R146 RES 10M 5% 0.25W AXIAL

51/1040/010M

R147 RES 10K 5% 0.25W AXIAL

51/1040/010K

R148 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R149 RES 5K11 1% 0.25W AXIAL

51/1010/5K11

R150 RES 2K2 5% 0.25W AXIAL

51/1040/02K2

R151 RES 680 5% 0.25W AXIAL

51/1040/0680

R152 RES 5K11 1% 0.25W AXIAL

51/1010/5K11

R153 RES 100K 5% 0.25W AXIAL

51/1040/100K

R154 RES 64K9 1% 0.25W AXIAL

51/1010/64K9

R155 RES 680 5% 0.25W AXIAL

51/1040/0680

R156 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R157 RES 10K 5% 0.25W AXIAL

51/1040/010K

R16 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R160 RES 100K 5% 0.25W SM1206

51/3380/100K

R161 RES 100K 5% 0.25W SM1206

51/3380/100K

R162 RES 270 5% 0.25W SM1206

51/3380/0270

R163 RES 100K 5% 0.25W SM1206

51/3380/100K

R164 RES 100K 5% 0.25W SM1206

51/3380/100K

R166 RES 15R 5% 0.25W SM1206

51/3380/0015

R168 RES 100K 5% 0.25W SM1206

51/3380/100K

R169 RES 100K 5% 0.25W SM1206

51/3380/100K

R17 RES 68K 5% 0.25W AXIAL

51/1040/068K

R170 RES 270 5% 0.25W SM1206

51/3380/0270

R171 RES 100K 5% 0.25W SM1206

51/3380/100K

R172 RES 100K 5% 0.25W SM1206

51/3380/100K

R177 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R178 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R179 RES 680 5% 0.25W AXIAL

51/1040/0680

R18 RES 470K 5% 0.25W AXIAL

51/1040/470K

R180 RES 470K 5% 0.25W AXIAL

51/1040/470K

R181 RES 4K7 5% 0.25W AXIAL

51/1040/04K7

R182 RES 100 5% 0.25W AXIAL

51/1040/0100

R183 RES 3K3 5% 0.25W AXIAL

51/1040/03K3

R184 RES 3K3 5% 0.25W AXIAL

51/1040/03K3

R185 RES 470K 5% 0.25W SM1206

51/3380/470K

Page 30

R186 RES 10 5% 0.25W AXIAL

51/1040/0010

R187 RES 100K 5% 0.25W AXIAL

51/1040/100K

R188 RES 10K 5% 0.25W AXIAL

51/1040/010K

R19 RES 10K 5% 0.25W AXIAL

51/1040/010K

R2 RES 1K0 5% 0.25W SM1206

51/3380/01K0

R20 RES 10K 5% 0.25W AXIAL

51/1040/010K

R21 RES 470 5% 0.25W AXIAL

51/1040/0470

R22 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R23 RES 680 5% 0.25W AXIAL

51/1040/0680

R25 RES 100K 5% 0.25W AXIAL

51/1040/100K

R26 RES 270 5% 0.25W SM1206

51/3380/0270

R27 RES 270 5% 0.25W SM1206

51/3380/0270

R28 RES 1K0 5% 0.25W SM1206

51/3380/01K0

R29 RES 39R 5% 0.25W SM1206

51/3380/0039

R3 RES 680 5% 0.25W SM1206

51/3380/0680

R30 RES 39R 5% 0.25W SM1206

51/3380/0039

R31 RES 180 5% 0.25W SM1206

51/3380/0180

R32 RES 390 5% 0.25W SM1206

51/3380/0390

R33 RES 270 5% 0.25W SM1206

51/3380/0270

R34 RES 10K 5% 0.25W SM1206

51/3380/010K

R35 RES 10K 5% 0.25W SM1206

51/3380/010K

R36 RES 10R 5% 0.25W SM1206

51/3380/0010

R37 RES 2K2 5% 0.25W SM1206

51/3380/02K2

R38 RES 1K0 5% 0.25W SM1206

51/3380/01K0

R39 RES 100 5% 0.25W SM1206

51/3380/0100

R4 RES 47R 5% 0.25W SM1206

51/3380/0047

R40 RES 100 5% 0.25W SM1206

51/3380/0100

R41 RES 100 5% 0.25W SM1206

51/3380/0100

R42 RES 100 5% 0.25W SM1206

51/3380/0100

R43 RES 220 5% 0.25W AXIAL

51/1040/0220

R44 RES 47R 5% 0.25W SM1206

51/3380/0047

R45 RES 15R 5% 0.25W SM1206

51/3380/0015

R46 RES 22 5% O.25W AXIAL

51/1040/0022

R47 RES 560 5% 0.25W AXIAL

51/1040/0560

R48 RES 680 5% 0.25W AXIAL

51/1040/0680

R49 RES 680 5% 0.25W AXIAL

51/1040/0680

R5 RES 47R 5% 0.25W SM1206

51/3380/0047

R50 RES 100 5% 0.25W AXIAL

51/1040/0100

R51 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R52 RES 3K3 5% 0.25W AXIAL

51/1040/03K3

R53 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

RF Technology R220

R54 RES 3K3 5% 0.25W AXIAL

51/1040/03K3

R55 RES 2K2 5% 0.25W AXIAL

51/1040/02K2

R56 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R57 RES 4K7 5% 0.25W AXIAL

51/1040/04K7

R58 RES 2K2 5% 0.25W AXIAL

51/1040/02K2

R59 RES 560 5% 0.25W AXIAL

51/1040/0560

R6 RES 47R 5% 0.25W SM1206

51/3380/0047

R60 RES 10K 5% 0.25W AXIAL

51/1040/010K

R61 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R62 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R63 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R64 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R65 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R66 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R67 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R68 RES 180 5% 0.25W SM1206

51/3380/0180

R69 RES 18R 5% 0.25W SM1206

51/3380/0018

R7 RES 1R0 5% 0.25W SM1206

51/3380/01R0

R70 RES 1R0 5% 0.25W SM1206

51/3380/01R0

R71 RES 220K 5% 0.25W AXIAL

51/1040/220K

R72 RES 47K 5% 0.25W AXIAL

51/1040/047K

R73 RES 51K 5% 0.25W AXIAL

51/1040/051K

R74 RES 51K 5% 0.25W AXIAL

51/1040/051K

R75 RES 51K 5% 0.25W AXIAL

51/1040/051K

R76 RES 47K 5% 0.25W AXIAL

51/1040/047K

R77 RES 47K 5% 0.25W AXIAL

51/1040/047K

R78 RES 47K 5% 0.25W AXIAL

51/1040/047K

R79 RES 10K 5% 0.25W AXIAL

51/1040/010K

R8 RES 150 5% 0.25W AXIAL

51/1040/0150

R80 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R81 RES 10K 5% 0.25W AXIAL

51/1040/010K

R82 RES 6K8 5% 0.25W AXIAL

51/1040/06K8

R83 RES 1K0 5% 0.25W AXIAL

51/1040/01K0

R84 RES 270K 5% 0.25W AXIAL

51/1040/270K

R85 RES 22K 5% 0.25W AXIAL

51/1040/022K

R86 RES 6K8 5% 0.25W AXIAL

51/1040/06K8

R87 RES 220K 5% 0.25W AXIAL

51/1040/220K

R88 RES 5K6 5% 0.25W AXIAL

51/1040/05K6

R89 RES 100K 5% 0.25W AXIAL

51/1040/100K

R9 RES 150 5% 0.25W AXIAL

51/1040/0150

R90 RES 150K 5% 0.25W AXIAL

51/1040/150K

RF Technology R220

R91 RES 560K 5% 0.25W AXIAL

51/1040/560K

R92 RES 10K 5% 0.25W AXIAL

51/1040/010K

R93 RES 2K2 5% 0.25W AXIAL

51/1040/02K2

R94 RES 2K2 5% 0.25W AXIAL

51/1040/02K2

R95 RES 64K9 1% 0.25W AXIAL

51/1010/64K9

R96 RES 64K9 1% 0.25W AXIAL

51/1010/64K9

R97 RES 64K9 1% 0.25W AXIAL

51/1010/64K9

R98 RES 15K 5% 0.25W AXIAL

51/1040/015K

R99 RES 15K 5% 0.25W AXIAL

51/1040/015K

RN1 RES PACK 100K X8 DIP16

52/2002/100K

RN2 RES PACK 10K SIP10

52/2002/010K

RV1 TRIMPOT 10K 1 TURN VERT

53/1020/010K

RV3 TRIMPOT 10K MULTITURN HOR

53/2060/010K


53/2060/010K


53/2060/010K

T1 TRANSFORMER LINE 600 OHM

37/2040/5065

U1 IC MIXER RX NE612N

25/2050/612N

U11 IC 3 STATE BUF 74HC244N

26/2030/244N

U12 IC EPROM 27C256

26/2090/C256

U13 IC 8 BIT LATCH 74HC573N

26/2030/C573

U14 IC MICRO SUPER MC34064P-5

26/2000/064P

U15 IC MICRO 68HC11A1P

26/2000/HC11

U16 IC RS232 INTER MAX232C

26/2001/232C

U17 IC ANALOGE GATE MC14066B

26/2040/4066

U2 IC DUAL OP AMP MC3458

25/2050/3458

U22 IC DUAL OP AMP MC1458B

25/2050/1458

U24 IC HEX INVERT CD4049

26/2040/4049

U26 IC QUAD OP AMP TLC274

25/2050/274C


25/2050/274C


25/2050/274C

U3 IC IF AMP LIM DISC NE614A

25/2020/614A

U4 IC FREQ SYN MB1501 SO16SP

26/2000/1501

U5 IC AUDIO AMP TDA2003

25/2070/2003

U6 IC VOLT REGULATOR LM7805

25/2040/7805

U7 IC QUAD NAND 74C00 DIP14

26/2031/4C00

XF1 CRYSTAL FILTER

33/2000/45MZ

XF2 CRYSTAL FILTER

33/2000/45MZ

Y1 CRYSTAL,45.455 HC-45/U

32/2045/45M4

Y2 CRYSTAL 5.0MHz

32/2049/05M0

Y3 CRYSTAL 8.0MHz

32/2049/08M0

L29 COIL 10mm 2T SHLD FRT COR

Page 31

37/2022/0311


37/2022/0311

L34 COIL 1 turn

37/2021/0310


37/2022/0311


37/2022/0311

CF1 FILTER CERAMIC CFS455G

34/2000/CFSG

R15 RES 470 5% 0.25W AXIAL

51/1040/0470

R24 RES 33K 5% 0.25W AXIAL

51/1040/033K

R220 TCXO Ref. Osc.

XO1 TCXO 12 MHz,HI-Q TCO474

32/3031/12.0


RF Technology Pty KRE200A-AN Basestation User Manual

Eclipse Series

RF Technology

November 2001

R220 Receiver

Operation and Maintenance Manual

Contents

WARNING

1 Operating Instructions

1.1 Front Panel Controls and Indicators

2 Receiver Internal Jumper Options

2.1

JP1: 240 Hz Notch Filter

2.2

JP2: Audio Response

2.3

JP3: Audio Filter In/Out

2.4

JP4: 600

Line dc Loop COS

2.5

JP6: COS Polarity

2.6

JP7, JP8, JP9: dc Loop COS Configuration (JP4 1-2)

2.7

JP7, JP8, JP9: Direct Output COS (JP4 2-3)

2.8

JP11 EPROM Type

3 Receiver I/O Connections

3.1 25 Pin Connector

5 Circuit Description

5.1

RF Section

5.2

IF Section

5.3

VCO Section

5.4

PLL Section

5.5

Audio Signal Processing

5.6

Noise Filter, Amplifier and Detector

5.7

Sub-Tone Filter and CTCSS

5.8

External Squelch

5.9

Microprocessor Controller

5.10

Carrier Operated Switch

5.11

Voltage Regulator

6 Alignment Procedure

6.1

Standard Input Signal

6.2

RF Alignment

6.3

IF Alignment

6.4

Line Level Adjustment

6.5

Reference Oscillator Calibration

7 Specifications

7.1

General Description

7.2

Physical Configuration

7.3

Front Panel Controls, Indicators and Test Points

7.4

Electrical Specifications

7.5 Connectors

A Engineering Diagrams

B Parts List

Related manuals

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Eclipse R70

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