Kenwood TS-820 Operating Manual page 4

~""' . """"""~.~,,,,,.,,,,,,.,,,,,>.#,,,,,.#,,,,. .,,,,, ..*
888,
, . #
,888
,.#,,,,,.,,,,,..,
,,,,
, . ,
,,,,
, . #
,,,,
,.,
,,,,
5
..,,,,,.
<
,,,,
,
.,,,,,
5
.................................................. ,,,,
,
.,,,,,,.
#
,,,,
,.,,,,,,.#,,,,.., ,,,,
t.,,"$a.#,,,,8.,,,,,,.,,,
,,,.,,,,,,.,,,,,,.,
s,,,,.,",,,.,
,,,,
,
..,,,,
,
.,,,,, ,.,,,,,,,
SECTION 1. FEATURES
z
. , 1 1 1 1 . 1 1 1 1 1 1 . 1 1 1 , 1 , . , , , , , , . , , , , , , . #
,888
. . , , , , , , . , , , , , , . , , , , , , . , , , , w . , , , , , , . ,
,,,,
,.#,,,,,.,,,,,,., ,,,,
,
.,,,,,
,.,
,,,,
,.,
,,,,..
,,,,a,.,
,,,,
, . #
,888
. . #
,888
,.,,,,,,.,w,,,.,
,,,,
. . , , , , , , . # , , , , , . , , , , Z , . , , , , , , . ,
,,,,
..,
,,,,
,.#,,,,,.#,,,,,.<,,,,,
.,,,,,
,.,
,,,,
...................... ....................
,
.,,,,, .",,,,,.,,,,,.
1. PLL System. H F Band S S B / C W / R T l Y
Transceiver
checking the modulation condition or adjusting the RF
processor.
This transceiver employs newly developed PLL (Phase
-
Locked Loop) circuit. covering 1.8 to 29.7 M H r ( W W V
9. Selector S w i t c h for SSB/CW Receive
15 MHz) for SSB, CW and RTTY ooerations.
Frequency Response
-
2. M i n i m u m Spurious and Excellent Overload
and Crossmod. Characteristic -
.- The adoption of FET baianced type mixer. MOS FET and
single conversion system minimizes spurious during
transmission and assures excellent overload and cross-
mod. characteristic during reception.
3. Built-in I F S H I F T Circuit
IF SHIFT circuit is built in the transceiver t o shift IF pass
band without changing receive frequency. The circuit is
also called the "pass band tuning circuit". I t allows you
t o eiiminate radio interference or sei the receive fre-
quency characteristic to the desired bandwidth simply
by manipulating one control knob.
4. Built-in RF Processo~
The unique speech processor uses a quick time constant
at 4 5 5 kHz. Since this circuit is of RF type. it produces
little distortion and. unlike the clipper system, does not
deteriorate the tonal quality.
5. RF N F B
RF NFB from the transmit final stage t o t h e driver stage
improves the cross modulation distortion. The use of
the ampl~fication type ALC further improves the quality
of transmit signals.
;
6. N e w l y Designed Analog Dial
The combination of newly designed mono-scale and su-
b-dial provides easy reading of frequencies. The adop-
1
tion of a circuit that is completely free from changes in
carrier frequencies permits accurate indication of fre-
quencies on one dial pointer.
7. Rigid Structure and Easy Operation
The transceiver is built with a die casting front panel
and a rlgid chassis, providing outstanding mechanical
stability for mobile operation. All the operating parts
such as control knobs and dials are designed and arran-
ged according t o human engineering technology t o en-
sure maximum case of operation.
8. M o n i t o r Circuit
The monitor circuit allows you to hear your own voice
during transmission. which is normally impossible w i t h
conventional transceivers. This 1 s very useful when
During CW reception the audio frequency response is
automatically narrowed to improve the clarity of sound.
10. Build-in Fixed Channel Circuits w i t h RIT
(crystals are optional)
The flxed channel circuits with RIT permit the use with
the built-in VFO for more enjoyable operation.
11. Transverter Connector
Transverter TV-502 (2m) can be connected for ready
operation. Changeover t o HF or VHF is accomplished
automatically with the power switch of the transverter.
12. Built-in A C Power Supply, and D C Operation w i t h
Optional D C - D C Converter
DC-DC Converter DS-1 (optton) can be attached to the
transceiver for m o b ~ l e operatlon
13. 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. healer switch.
IF OUT terminal and linear terminal.
The following devices are available as optional extra:
Remote VFO (VFO-820). CW Filter (YG-88C). Digitai
Display IDG-1). Transverter (TV-502). Microphone
(MC-50). Law Pass Filter (LF-30A).
14. Use of D i g i t a l Display Dial D G - 1 (option)
1 )
Digital Display Dial
The digital dial of TS-820 indicates transmit and receive
frequencies using carrier. VFO and local oscillator
signals instead of converting VFO frequencies. Thus.
accurate frequencies can be read at all times at any
band and any operating made.
Since the accuracy of frequencies is set up anly by the
1 MHz standard oscillator, frequencies can be read ac-
curately up t o 1 0 0 Hz order by calibrating the 0S~illat0r
w i t h WWV.
The green indication on the dial assures many hours Of
fatigueless operation.
2 ) D H (display hold) Switch
By pressing the D H switch. the frequency read on the
digital remains on, thus serving as a memory system.