Ssb Operation; Cw Operation - Kenwood TS-820 Operating Manual

PLATE A N D L O A D T U N I N G
C A U T I O N : When the MODE switch is in the CW positlon
tile final tubes draw full plate current in transm#t. Final tube
life
is
directly related t o the length of tune-up periods. Do
not transmit with the tubes out of resonance for more than
1 0 seconds at
a
tlme.
Turn the MODE switch t o CW, turn the METER switch to RF.
and set the s t a n d ~ b y switch to the SEND position. Quickly
adjust the PLATE control and then the LOAD control alter^
nately to peak (maximum meter deflection] the power out-
put. I f necessary, adjust the RF VOLTcontrol on the rear
pa^
nel to bring the output reading t o about a 2/3 scale reading.
NOTE 1 : The ALC meter is less deflected at the ON posi-
tion of the SG switch or at the CW position of the MODE
s w ~ t c h than at the OFF position or the TUN position of these
switches. This indicates the normal state of RF NFB. The
MIC knob and the CAR knob should be properly adjusted
un-
der normal transmit condftions.
NOTE 2: Transmission is not effected at the W W V or AUX
positton of the BAND switch. If the transceiver is left in the
transmit mode over a few minutes. the driver tube 12BY7A
of the final stage may be damaged.
4 . 1 2 SSB O P E R A T I O N
Tune the TS-820 as described i n Sections 4 1 to 4 . 1 1 Set
the MODE switch to USE or LS8 and connect a microphone
to the MIC connector.
NOTE lnternatlonal amateur practlce dictates uslng USB
or LSB on the f o l l o w ~ n g bands
Key the transm~tter and speak into the microphone w i t h the
tone of vojce used in normal operation Adjust the MIC con-
trol u n t ~ l voice peaks are just within the top limit of the ALC
range printed on the meter scale. The METER switch 1 s in
the ALC position If the
transmitter
section is driven beyond
this range, the transm~tted signal will be distorted.
- - -
21.0
MHz Band
- -
U S E
PTT O P E R A T I O N
28.0
MHz
Band
By connecting the microphone equipped with PTT switch.
the transceiver
is
readily used for PTT operation. For com-
munication. depress PTT switch with STANDBY switch left
in the REC position.
USE
VOX O P E R A T I O N
Adlilsl tho transceiver as described in the previous para-
graph. Flip the VOX switch onand close-talk into the micro-
phone, increasing the VOX G A l N control until the VOX relay
just operates. For VOX operation i t is desirable to close-talk
the microphone to prevent background noises from tripping
the TS-820 mto transmission.
Check that the ALC reading for voice peaks is still within the
ALC range on the meter, If necessary. adjust the MIC con-
trol for a proper ALC reading.
I1 the VOX c l i c u ~ t
is
acttvated by speaker nolse. adjust the
ANTI-VOX control Increase the control as necessary for
proper VOX operatlon
Do not use more VOX G A l N or more ANTI VOX gain than
necessary to control VOX operation. If the VOX circuit
transfers between words, or holds too long. adjust the re-
lease time constant by turning the DELAY control.
4 . 1 3
C W
O P E R A T I O N
Tune and load the T S - 8 2 0 as described in Sections 4.1
through 4.1 1. Connect a key to the back panel CW KEY
jack, set the M O D E switch to CW. and set the stand-by
switch t o SEND for transmitting.
CW transmlsslons are automatically monitored through the
speaker o f the
transceiver
The a u d ~ o galn of the sldetone
can be adjusted w ~ t h VR3 on the AF board
For semi-break-in operation. turn the VOX switch on. Hold
the key down and increase the VOX G A l N control. until the
VOX relay just operates. It is desired t o change the release
ttlne constant of the VOX circuit. adjust the DELAY control.
The plate current for CW operatlon should be about 2 0 0
ma Use the CAR control t o adjust the carrler level for CW
opcratlon A t 2 0 0 ma of IP there may be no ALC read~ng
OPERATION W I T H O U T C W FILTER
Set the IF SHIFT knob t o its center position and the RIT
switch to the OFF position t o receive CW signal. Turn the
maln tuning knob for about 8 0 0 Hz of beat signal and your
tiansmlt frequency will be set t o the transmit frequency of
the opposite station (zeroing). During reception. the side
tone monltor is activated by pressing d o w n the key. I n this
case, listen t o the side tone signal and the receive signal and
adlust the maln tuning knob so that the cycle of the sound is
increased. By so doing. the zeroing of frequencies can be
achieved. After zeroing. set the RIT swltch t o ON and turn
the RIT knob for the pitch that suits your listening taste.