Kenwood TS-830S Instruction Manual page 19

(1) SSB OPERATION
Tune the TS-830S as described in steps 1 through 9. Set
the MODE switch per Table 4-2,to USB or LSB and connect
a microphone to the MIC input.
NOTE:
International Amateur practice dictates using USB or LSB as
shown in Table 4-2.
To operate SSB, connect a microphone. (The Key and
CARRIER control have no effect in SSB mode.) Place the
MODE switch to SSB, METER switch to ALC. Adjust the
MIC gain control for an on scale ALC reading on voice
peaks. (Disregard RF and Ip meter readings in SSB- they
are not accurate or relevant.
1.8 MHz Band
3.5 MHz Band
7 MHz Band
10 MHz Band
14 MHz Band
18 MHz Band
21 MHz Band
24.5 MHz Band
28 MHz Band
TABLE 4-2. MODE by Band
@ PTT (Push to talk) OPERATION
By using a microphone equipped with a PTT switch, the
transceiver is ready for PTT operation. To key, depress the
PTT switch with the stand-by switch left in the REC position.
4.4 TRANSMISSION (II)
To obtain maximum transmitter performance from your
TS-830S you should understand the proper operation of the
following controls and switches.
(1) SPEECH PROCESSOR
In SSB operation (particularly DX operation), it may be desir-
able to increase ''talk-power'' by using the speech
processor. This may make the difference between a margi-
nal, and a copiable signal.
Operation
The speech processor system in the TS-830S is anRF clipper
using two filters, one in the VBT circuit and the other in the
IF.
Turn the PROCESS switch ON and place the METER switch
to COMP. Adjust the COMP LEVEL control while speaking
into the microphone in a NORMAL tone of voice for a peak
COMP scale reading of about 10-20 dB. Do not overdrive
the COMPRESSOR: This will deteriorate voice quality,
increase transmitter noise level, and in general make
copying your signal more difficult.
Next, set the METER switch to ALC and adjust the MIC
control while speaking into the microphone. Ensure that
meter deflection is within the ALC zone.
NOTE:
When a high-output microphone is used, input overload and
distortion will result. To prevent this, use an attenuator in
the microphone circuit as shown below, or connect a 10 —
33 kQ resistor (depending on microphone used) across the
microphone input. ("Normal mic control setting should be
approximately 12 O'clock).
10k — 33 k®2 (depending on microphone used.)
from microphone to the MIC connecter
10kQ
The MC-50 microphone is recommended (Microphone
sensitivity; —55 +3 dB for approx. 5 cm distance to the
mic.)
(2) VOX (Voice Operated Transmit) OPERATION
Adjust the transceiver as described in the previous pa-
ragraph. Flip the VOX switch on and while speaking into the
microphone, increase the VOX GAIN control until the VOX
relay just operates. For VOX operation it is sometimes
desireable to close-talk the microphone to prevent
background noises from tripping the transmitter.
Check that the ALC reading for voice peaks is still within
range on the meter. If necessary, adjust the MIC control for
proper ALC reading.
If the VOX circuit is activated by speaker output, adjust the
ANTI-VOX control (on the rear panel) as necessary for
proper VOX operation.
Do not use excessive VOX or ANTI VOX gain more than
necessary to control VOX operation. If the VOX circuit
transfers between words, or holds too long, adjust the
release time constant by the DELAY control.
19