New Product Release Information : RADIO 33
HF/50MHz All-Mode Transceiver
January 2013
We are pleased to inform you of our new HF/ 50MHz all mode Transceiver for
Amateur Radio.
End of February 2013
2-1. Main receiver
Down conversion format for all amateur bands
A key point in tapping maximum performance from the 1st mixer in actual operation
(say, CW operation) is to prevent the outflow of unnecessary signals, other than the
target signal, from the mixer to the subsequent stage. This is because it can tap the
maximum performance of the digital IF filter using the DSP in the final IF stage. The
TS-990 main reception unit employs a 1st IF frequency 8.248 MHz down-conversion
format. It achieves superior close-in dynamic range unattainable through conventional
up-conversion formats. Even if the interference is a close-in frequency, the receiver
maintains a relatively flat dynamic range, which you can tune without losing your target
Newly developed mixer
In place of the Double Balanced Mixer, which uses the conventional J-FET, we have
installed the newly developed Double Balanced Grounded Switch Type in the 1st mixer
circuit, which is the heart of the main receiver. The transceiver is also equipped with a
pre-selector function that varies the tuning frequency in tandem with the reception
frequency. It effectively dampens strong interference signals that cannot be minimized
through bandpass filters on dedicated amateur bands. Furthermore, we have achieved
a +40dBm class of third-order intercept points for the signal path of the 1st mixer,
based on selected circuits and components, and by employing large-sized core toroidal
coils for protecting against distortion based on large input signals, as well as using
relays for the signal switching.
Newly developed narrow-band High-IP roofing filter
The transceiver uses a down-conversion method for all amateur band reception, and
features five types of High-IP roofing filter. Narrow bandpass widths selectable are 500
Hz and 270 Hz for CW operation, 2.7kHz for SSB and 6kHz and 15kHz, which are
suitable for AM/FM. These filters are automatically selected in tandem with DSP-based
final bandpass settings. Of course, manual switching is possible as well.
Newly developed VCO frequency division 1st local oscillator
The TS-990 Local Oscillator Circuit is an independent configuration that combines the
main receiver and VCO Frequency Division/DDS Direct, the sub-receiver and DDS Direct,
and the transmission unit and conventional PLL, with the targeted signal system. The
newly developed VCO frequency division format is used for the 1st local oscillator of
the main receiver. The device achieves favourable C/N characteristics that rival the
DDS direct format, and relatively spurious-free local oscillation signals that are
characteristic of the PLL format, by oscillating and dividing the VCO at higher
frequencies than the intended frequency. It is possible to convert it to 1st IF in a pure
state without leaking the target signal as noise by reducing static noise from the local
oscillator and increasing the C/N ratio.
Equipped with ±0.1ppm TCXO
The standard equipment includes a TCXO (temperature-compensated crystal
oscillator), which stabilizes frequencies at ±0.1ppm as the standard signal source.
Unlike OCXO (Oven Controlled crystal Oscillator), which requires warm-up time, this
device can start up quickly even from the power-off position, while maintaining a high
level of stability. It is in compliance with European energy-saving standard Lot6. Power
consumption in stand-by energy-saving mode is less than 0.5 W. A BNC connector on
the rear pannel provides 10MHz reference I/O.
2-2. Sub receiver
Down conversion for amateur bands below 15m
The sub-receiver features reception performance that has exceeded its class since
going on sale, thus further refining this popular receiver on the TS-590.
Because this is particularly the case on the front end, where it employs circuit
configuration that makes down-conversion possible on the leading five amateur bands,
it can be used in actual operation despite being just a sub-receiver.
* The IF bandwidth for 160m/80m/40m/20m/15m bands is (SSB/CW/FSK/PSK) for
frequency levels 2.7 kHz or below.
Roofing filter, 500 Hz, 2.7 kHz
Frequencies of 500 Hz and 2.7 kHz are standard for sub-receiver roofing filters.
You can maintain a more or less flat dynamic range even if interference impinges on
your reception frequency, thanks to superior close-in dynamic range properties. You
can clearly catch signals under conditions made problematic by strong close-in
interference signals.
2-3. Triple DSP
Equipped with dedicated DSP for the main-receiver,
sub-receiver and band scope
Kenwood continues to provide quality sound transmission that is
unattainable through analogue circuits. By loading the worldpremiere DSP on the TS-950 and achieving IF AGC control on
the TS-870 by using DSP for the first time for amateur wireless
devices. As a culmination of the foregoing developments, three
DSP units are used, one on each major block of the TS-990.
By distributing the signal processing of the main IF, band scope,
and sub-IF, we have realized ample digital signal processing.
(FM mode is AF DSP processing.)
Advanced AGC control
The reception sound quality of SSB and CW is not solely determined by audio
frequency and filter delay properties. AGC characteristics play a very significant role as
well. The opinion of many of our fans that “even for long periods of time they never get
tired of listening” is due to the characteristics of Kenwood’s AGC. The TS-990 goes a
long way in helping further refine the Kenwood tone by innovating not only the AGC
control algorithm on the DSP but also the analogue AGC unit as well.
Exacting chassis design
The sound quality of the built-in speakers is largely determined by the chassis structure.
With the TS-990, we have been able to minimize unnecessary chassis vibration
through multiple simulations from the conceptual phase. The Kenwood tone is
supported not only by circuits and DSP but also by exact chassis design.
Extensive interference elimination
and noise reduction functions
IF filter bandwidth variability
IF filter A/B/C one-touch switch instantly
IF notch
Band elimination filter function
The noise blanker function (NB1/NB2)
DSP-based noise reduction function (NR1/NR2)
Beat cancel function (BC1/BC2)
Audio peak filter
2-4. Transmitter
High reliability design
The device uses POWER MOSFET VRF150MP,
which runs at 50V, with push-pull. You can obtain
a high, stable output of 200 W on all bands. You
can achieve superior IMD properties by pursuing
bias and matching conditions in order to fully
exploit the 30FET attributes. Further, you can
realize Kenwood’s distinctive tone by amplifying
the clean modulated signal produced by DSP with
an amplifier that exhibits excellent linearity.
Built-in automatic antenna tuner
The built-in automatic antenna tuner is a preset type that covers amateur band
frequencies ranging from 160m~6m, and can be switched in on receive too. The tuner
is capable of rapid QSY based on instantaneous band change, using a relay system
known for high-speed operations. The relays, capacitors, and inductors use large-sized
components that are able to bear the 200 W output.
Cooling system
Cooling is very important to obtain a stable output of 200 W. Heat dissipation efficiency
is increased in the TS-990 through a large fin-type aluminium heat sink. An
independent variable-speed fan is provided for the switching power supply, final unit,
and antenna tuner, cooling each unit with a sufficient air supply. The switching power
supply and the final unit have twin cooling fans. Noise is reduced by controlling the fan
speed according to the temperature.
2-5. Dual display
Main display
The main display shows basic information about the frequency, mode, meter, and
others functions, as well as the on/off status of the other accessory functions.
You can also view internal parameter settings and memory lists. In addition,
it features a band Viewscope function that allows you to monitor band status. Execute
fast sweeps with FFT processing using DSP. Switch to different view modes such as
waterfall and reception/transmission equalizer views.
Touch-Sensitive mode
Simply touch the main screen for quick
QSY re-tuning.
Sub band display
The 3.5” TFT sub band display is located above the main dial, which not only reduces
eye movement in reading the frequency, but also allows you to monitor
the target signal itself by displaying the demodulated audio spectrum. In addition, filter
effects can be displayed on the easy-to-see sub band display, allowing for intuitive
operation. You can switch the sub band display between the four different view modes
below according to your intention.
Single Frequency Display With Virtual Dial
FSK mode
2-6. Control
New frequency function
You can use the frequency function that switches legacy VFO A/VFO B by switching
the main and sub band. Turn the sub band reception on and off using the RX key on
top of the main dial, and switch between simplex and split using the TX key. A single
glance at the LED lighting lets you know the current status.
New split function
Just as with the legacy series, you can add functions via M>S and M/S giving a dualaction quick-split set up.
Memory channel
Memory for a maximum of 120 channels is available. In addition to the repeater
frequency, you can also preset beacons and transmission stations. You can easily call
up the states of simultaneous dual reception using the dual channel memory.
USB port
The front panel is equipped with two USB ports (A/B) for keyboard or USB flash drive.
Switch to update mode and insert USB memory into the USB-A port on the front panel,
and the update will automatically begin. In addition, access your USB memory from
your PC by connecting your PC via USB cable to the USB-B port on the rear panel,
switch to update mode, and a folder named TS-990 will appear on your computer.
External I/O interface
There are a variety of I/O interfaces, including the microphone jack, analogue audio
input and output, USB audio interface, and optical digital interface. By combining DATA
mode (1-3) with SSB/FM/AM modes, it is possible to easily switch between an external
device for modulation and demodulation. Switch between DATA VOX function and
mute for each modulated line.
DSP equalizers
In addition to the legacy presets, up to a maximum of three user settings can be
configured. You can store the equalizer settings used for each mode and enjoy a very
comfortable rag-chew session with others.
Remote PC operation
Using the ARCP-990 software (radio control software), you can control most functions
from your PC. Control the memory channel, settings, and functions using your PC.
Using the ARHP-990 software (radio host software), the local PC can relay control data
between the local TS-990S and the remote (operator) PC. Download the free software
from the Kenwood website.
Front/Rear Panel
Rear Panel
⑩ ⑪ ⑫
① Antenna Connector x 4
② RX IN Connector (RCA): Receive Only Antenna Termina
③ RX OUT Connector (RCA): External Receiver
Connection Terminal
④ Key Jack (φ6.3): For Paddle, Vertical Bug Key,
and PC Keying
⑤ ACC2 Connector (13Pin DIN): Audio I/O and Other
Accessories Connection
⑥ Remote Connector (7 Pin DIN): Linear Amplifier Connection
⑦ Meter Jack (φ3.5): Analog Meter Connection
⑧ Drive Connector (RCA): Drive Output
⑨ Ground Terminal
⑩ Standard External I/O Terminal (BNC): 10MHz
⑮ ⑯ ⑲
⑪ AC Power Supply Connector (3 Pin)
⑫ AT Connector (6Pin): External Antenna Tuner Connection
⑬ Keypad Jack (φ3.5): Function Key Pad Connection
⑭ COM Connector (D-SUB 9Pin): RS-232C
⑮ Optical Connector Input Terminal (EIAJ Optical)
⑯ Optical Connector Output Terminal (EIAJ Optical)
⑰ External Speaker Jack 1 (φ3.5)
⑱ External Speaker Jack 2 (φ3.5)
⑲ USB Connector (USB-B): PC Control, USB Audio
⑳ Display Connector (DVI-I): External Display
Connection Terminal
㉑ LAN Connector (RJ-45): PC Control
① Headphone Jack (φ6.3)
② Paddle Keyer (φ6.3)
③ USB Connector (USB-B):PC Control, USB Audio
④ Microphone Jack (8 Pin Metal Type)
ISO 9001 Quality Management for Manufacturing
The TS-590S is manufactured in Kenwood’s Japan factory which has been assessed
and registered as ISO9001 compliant. ISO9001 is the international standard for
Quality Management Systems.
Headphone (Open Air)
Headphone (Light Weight)
*1 The users can listen each reception sound of main/sub-band separately by using a stereo
Headphone on the TS-990S. HS-5 and HS-6 are monaural. We recommend to use stereo
headphone to fully utilize simultaneous dual reception function of the TS-990St.
Hand Microphone
Hand Microphone
Desktop Microphone
Desktop Microphone (DSP Compatible)
External Speaker
Mobile Speaker
SP-990 (NEW)
External speaker
9 The SP-990 is designed to have the Kenwood-tone and the best
matching with consideration for the built in speaker of the TS-990S.
9 Thanks to equip High/Low cut filter independently, the SP-990 can be
setting to an appropriate sound character as the situation demands.
9 Full-range speaker (5W, 8Ω)
9 Built-in filters (3 x high-cut, 3 x low-cut)
9 2 inputs (A/B)
9 Mute
ARCP-990*2,3(NEW) Radio Control Program for Windows OS*4
ARHP-990*2,3(NEW) Radio Host Program for Windows OS*4
ARUA-10 ver2.00*2,3 USB Audio Controller Program for Windows OS*4
*2 These are going to be a free download from
*3 To connect your TS-990S to a PC via its USB port, install the Silicon Laboratories Inc.
virtual COM port driver in the PC first. It is going to be a free download from
*4 Windows® is a registered trademark of Microsoft Corporation in the United States and
other countries. ARCP/ARHP-990 and ARUA-10 are compatible with Windows XP
(32-bit, SP3 or later), Windows Vista (32-bit, SP2 or later), and Windows 7 (32-bit/64-bit)
operating systems
AC Power cable (include both EU/UK plug)
Users Manual
Warranty card
Fuse (4A)
7pin DIN plug
13pin DIN plug
Frequency range
160m band
1.81 ~ 2.0 MHz
80m band
3.5 ~ 3.8 MHz
40m band
7.0 ~ 7.2 MHz
30m band
10.1 ~ 10.15 MHz
20m band
14.0 ~ 14.35 MHz
17m band
18.068 ~ 18.168 MHz
15m band
21.0 ~ 21.45 MHz
12m band
24.89 ~ 24.99 MHz
10m band
28.0 ~ 29.7 MHz
6m band
50.0 ~ 52.0 MHz
Frequency range (Receiver)
0.13 ~ 30 MHz, 50 ~ 54 MHz *1
VFO operation: 30 kHz ~ 60 MHz
A1A(CW), A3E(AM), J3E(SSB), F3E(FM),
Frequency stability
Within ±0.1 ppm (0 ℃ ~ +50 ℃)
Antenna impedance
50 Ω
Antenna tuner load range
16.7 ~ 150 Ω
Standard voltage
AC 220-240 V (50/60 Hz)
Supply voltage range
±10 % (AC 198 V ~ 264 V)
At transmit (maximum)
At receive (no signal)
Usable temperature range
200 VA or less
0 ℃ ~ +50 ℃
Without projection
W 460 x H 165 x D 400 mm
Include projection
W 460 x H 182 x D 449 mm
At front leg up position
840 VA or less
H 201(front panel), H 173(rear panel)
Approx. 24.5 kg
Output power
200 W (50 W)
SSB:Balanced, AM:Low Power, FM:Reactance
Maximum frequency deviation (FM)
wide:Less than ±5 kHz, narrow:Less than ±2.5 kHz
Spurious emissions
HF (Harmonics) : Less than -60 dB
HF (others) : Less than -50 dB
50 MHz: Less than -66 dB
Carrier suppression
Less than -60 dB
Unwanted sideband suppression
Less than -60 dB
Transmit frequency response
Within -6 dB (200 ~ 2700 Hz)
Microphone impedance
600 Ω
XIT variable range
±9.999 kHz
Circuit type
Sub1 *2
Sub2 *3
1st IF
8.248 MHz
11.374 MHz
73.095 MHz
2nd IF (FM)
24 kHz / (455 kHz)
24 kHz
10.695 MHz
3rd IF (FM)
Less than 0.5 μV (0.13 ~ 0.522 MHz)
(S/N 10 dB)
Less than 4 μV (0.522 ~ 1.705 MHz)
24 kHz / (455 kHz)
Less than 0.2 μV (1.705 ~ 24.5 MHz)
Less than 0.13 μV (24.5 ~ 30 MHz)
Less than 0.13 μV (50 ~ 54 MHz)
AM (S/N 10 dB)
Less than 6.3 μV (0.13 ~ 0.522 MHz)
Less than 32 μV (0.522 ~ 1.705 MHz)
Less than 2 μV (1.705 ~ 24.5 MHz)
Less than 1.3 μV (24.5 ~ 30 MHz)
Less than 1.3 μV (50 ~ 54 MHz)
FM (12 dB SINAD)
Less than 0.22 μV (28 ~ 30 MHz)
Less than 0.22 μV (50 ~ 54 MHz)
Image Rejection Ratio (50 MHz)
Less than 70 dB (60 dB)
IF Rejection Ratio
Less than 70 dB
More than 2.4 kHz (-6 dB)
(LO:200 / HI:2800 Hz)
Less than 4.4 kHz (60 dB)
More than 500 Hz (-6 dB)
(WIDTH:500 Hz)
Less than 1.2 kHz (-60 dB)
More than 6.0 kHz (-6 dB)
(LO:100 / HI:3000 Hz)
Less than 12 kHz (-50 dB)
More than 12 kHz (-6 dB)
Less than 25 kHz (-50 dB)
RIT variable range
±9.999 kHz
Notch filter attenuation
More than 60 dB (Auto), More than 70 dB (Manual)
Beat cancel attenuation
More than 40 dB
Audio output
More than 1.5 (8Ω)
Audio output impedance
These specifications are guaranteed for Amateur Bands only.
60m band: UK only
*1 MAIN BAND: Spec. guaranteed in amateur band 160m through 6m
*2 In 1.8/3.5/7/14/21 MHz Amateur band, IF band width 2.7 kHz or less (SSB, CW, FSK, PSK)
*3 Except in above *2
SP-990 M
Without projection
W 200 x H 165 x D 300 mm
Include projection
W 200 x H 182 x D 306 mm
(for front leg up position)
H 201(front panel), H 180(rear panel)
2.8 kg
8 Ω ±15 %
2.4 kHz / -3 dB
1.0 kHz / -3 dB
700 Hz / -3 dB
200 Hz / -3 dB
400 Hz / -3 dB
600 Hz / -3 dB
Phone jack output
at 8 Ω
20 mW
Audio input
at 8 Ω
High cut filter
Low cut filter
Line output impedance
1 kΩ
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