Kenwood TS-830S Instruction Manual page 27

@ ADJUSTMENT OF ANT AND MIX COILS
(COIL PACK UNIT)
The ANT and MIX coils are included in the coil pack unit.
Use the 25 kHz calibrater as a signal. Connect a 502 dummy
load to terminate the receiver input. Set the DRIVE control
to 12 o'clock. Adjust the ANT and MIX coils for maximum S
meter deflection, following the frequency table. Start with
the 1.8 MHz band and then proceed to other bands. To ad-
just the 10m band, use only 28.8 MHz in the 28.5 MHz
band.
@ ADJUSTMENT OF RECEIVE IF COILS
(RF AND IF UNITS)
Receive a marker signal using any frequency. Adjust the
DRIVE and the main tuning for maximum S meter deflec-
tion. Adjust T2 on the RF unit and L5, L6, L7,L11 and L12
on the IF unit for maximum S meter indication. DO NOT
adjust L3, L4, L5 and L9.
™ S METER ADJUSTMENT (IF UNIT)
Disconnect the antenna with the transceiver in receive
mode. Zero-point adjustment:
Adjust VR2 for meter pointer zero indication. If a standard
SIGNAL GENERATOR (SSG) is available, adjust VR3 so the S-
meter indicates "S-9", at 14.175 MHz, 40 dB signal.
6.4 TRANSMITTER ADJUSTMENTS
@ TRANSMITTER NEUTRALIZATION
(See Internal View Bottom)
The TS-830S requires neutralization every time the final
tubes are changed.
Tune up the TS-830S into a 50 ohm dummy load at 28.5
MHz for CW operation as described in Section 4. Set the
SG switch to OFF and place a sensitive RF milli-voltmeter
across the dummy load. Flip the stand-by switch to SEND
and adjust TC1 (at the bottom of the final section) for a
minimum reading on the voltmeter. After the final section is
neutralized, flip the stand-by switch to REC and slide the SG
switch ON.
A receiver tuned to 28.5 MHz works very well for neutraliz-
ing if an RF voltmeter is not available. Instead of tuning for
a minimum voltage, tune for a minimum S-meter reading.
NOTE: -
Since the drive tube operates into a fixed load (the finals) it
is not always necessary to replace this tube when replacing
the finals.
CAUTION:
Neutralization of the final section should be carried out with
the chassis shield in place. Dangerous high voltages are
present in the final section when the transceiver is turned
on. Use an insulated tool to make this adjustment.
@ TRANSMIT DRIVE COIL ADJUSTMENT
(RF UNIT)
The drive coils are part of the coil pack unit. Set the SG
switch on the rear panel to OFF and center the DRIVE con-
trol (12 o'clock). Set the METER switch to ALC and the
MODE switch to CW.W, CW.N or TUN.
With the standby switch in the SEND position, adjust the
drive coils for maximum ALC deflection for each band using
the same frequency and in the same order as for adjustment
of ANT and MIX coils.
During adjustment, adjust the CAR control so there is just
enough injection to swing the ALC meter.
@ TRANSMIT IF COIL ADJUSTMENT
(IF AND RF UNITS)
™ CARRIER BALANCE ADJUSTMENT (IF UNIT)
With a 502 dummy load connected to the ANT terminal,
adjust for maximum output at 14.175 MHz. Reduce mic
gain to zero. Set the transceiver in LSB mode and adjust the
RF VOLT control on the rear panel for maximum sensitivity.
The RF meter will deflect if the carrier is unbalanced. To
balance the carrier, alternately adjust trimmer TC2 and
trimpot VR4 until the meter indicates minimum. Switch to
USB mode and if the pointer deflects, readjust so the pointer
deflects equally for both LSB and USB.
@ ADJUSTMENT OF MONITOR LEVEL (IF UNIT)
Adjust VR8 to your preference.
6.5 TRANSMITTING ON WARC BANDS
As supplied, the TS-830S will receive but not transmit on
the 3 new WARC bands. If transmit capability is desired, a
minor wiring change is required.
1. For all 3 bands: Break the line between the RF unit
X44-1360-00, connector #6, Pin #1 (TOF terminal) and
AF unit X49-1140-00, connector #6, Pin #4 (TOF ter-
minal).
2. Or, for individual Bands: On the RF unit X44-1360-00:
Band Remove (or Cut) Part
10 MHz D4
18 MHz DS
24.5 MHz D6
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