Kenwood TS-820S Instruction Manual page 4

SECTION 1. FEATURES
8. D.H. (Displav Hold) SWITCH
BV pressing the DH switch. the frequency read on the
digital remains on. thus serving as a memory system
1. Pll System, HF Band SSB!CW!RTTY
Transceiver
This transceiver employs newly developed PLl (Phase
Locked loop) circuit covering 1 8 to 29.7 MHz (WWV
15 MHz) for SSB, CW and ATTY operations
9. Rigid Structure and Easy Operation
The transceiver is built with a die casting front panel
and a rigid chassis, providing outstanding mechanical
stability for mobile operation All the operating parts
such as control knobs and dials are designed and arran-
ged according to human engineering technology to en-
sure maximum case of operation
2. Minimum Spurious and Excellent Overload
and Crossmod. Characteristic
The adoption of FET balanced type mixer. MaS FET and
single conversion system minimizes spurious during
transmission and assures excellent overload and cross-
mod. characteristic during reception.
10. Monitor Circuit
The monitor circuit allows you to hear your own voice
during transmission. which is normally impossible with
collventional transceivers This is very useful when
checking the modulation condition or adjusting tho AF
processor
3. Built-in IF SHIFT Circuit
IF SHIFT circuit is built in the transceiver to shift IF pass
band without changing receive frequency The circuit is
also called the "pass band tuning circuir., It allows you
to eliminate radio interference or set the receive fre-
quency characteristic to the desired bandwidth simply
by manipulating one C<;Introl knob
11. Selector Switch for SSB/CW Receive
Frequency Response
During CW reception the audio frequency response IS
automatically narrowed to improve the clarity of sound.
4. Built-in RF Processor
The unique speech processor uses a quick time constant
at 455 kHz. Since this circuit is of RF type, it produces
little distortion and, unlike the clipper system, does not
deteriorate the tonal quality
12. Build-in Fixed Channel Circuits with AIT
(crystals are optionall
The fixed channel circuits with AIT permit the Uie with
the built-in VFO for more enjoyable operation
5. RF NFB
RF NFB from the transmit final stage to the driver stage
improves the cross modulation distortion. The use of
the amplification type AlC further improves the quality
of transmit signals
13. Transverter Connector
Transverter TV-502 (2m) can be connected for ready
operation. Changeover to HF or VH F is accomplished
automatically with the power switch of the transverter.
6. Newly Designed Analog Dial
The combination of newly designed mono-scale and su-
b-dial provides easy reading of frequencies. The adop-
tion of a circuit that is completely free from changes in
carrier frequencies permits accurate indication of fre-
quencies on one dial pointer.
14. ,Built-in AC Power Supply. and DC Operation with
Optional DC-DC Converter
DC- DC Converter DS-1 A (option) can be attached to
the transceiver for mobile operation.
16. Wide Variety of Auxiliary Circuits
and Devices
The transceiver is completed with a noise blanker
circuit, VOX circuit, side tone circuit, marker cIrcuit,
built-in speaker. 3-position AGC switch, heater swItch.
IF OUT terminal and linear terminal
The following devices are available as optional extra:
Remote VFO (VFO-820), CW Filter (YG-88CI, Digital
Display (DG-1 AI. Transverter (TV-502S). Microphone
(MC-50), Low Pass Filter (Lf-30A)
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7. Digital Display Dial
The digital dial of TS-820S indicates transmit and
receive frequencies using carrier. VFO and local oscil-
lator signals instead of converting VFO frequencies.
Thus. accurate frequencies can be read at all times at
any band and any operating mode.
Since the accuracy of frequencies is set up only by the
10 MHz standard oscillator. frequencies can be read ac-
curately up to 100 Hz order by calibrating the oscillator
with WWV.
The green indication on the dial assures many hours of
fatigue less operation
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