Kenwood TS-830S Instruction Manual page 10

14. VOX GAIN @
This controls sensitivity of the VOX (Voice Operated
Transmit) circuit.
15. VOX DELAY CONTROL @®
The DELAY control adjusts the hold time for VOX or break-in
CW operation. Adjust for individual preference.
16. PHONES JACK ®
The headphones jack allows use of a 4 to 16 ohm
headphone through a 1/4" phone plug. When phones are
used the speaker is disconnected.
17. MIC CONNECTOR @
The four pin connector allows use of a PTT microphone.
Figure 2-1B shows plug wiring.
18. MODE SWITCH
The mode switch selects type of emmission; and TUNE.
TUNE simaieovs This position provides reduced carrier and
shorted key line for transceiver tuning. (Input
power to the final section is reduced to
prevent tube damage during tune-up.)
. Used for CW operation. A high-cut filter is
inserted in the receiver audio circuit to
reduce unwanted noise.
SSB filter selected for WIDE receive
bandwidth.
GWEN incense (NARROW) Used for CW operation with CW
filters YK-88C (500 Hz), YK-88CN (270 Hz),
YG-455C (500 Hz) or YG-455CN (250 Hz),
which are available as optional accessories.
Without an optional CW filter installed, the
pass-bandwidth is the same as in CW.W.
SB steweeested Used for upper-sideband operation. Inter-
national Amateur practice dictates the use of
USB on the 10, 14, 18, 21, 24.5 and 28
MHz bands.
CSB) secu ayes Selects lower-sideband. International
Amateur practice dictates the use of LSB on
the 1.8, 3.5 and 7 MHz bands.
19. MIC GAIN CONTROL @®
This control adjusts microphone amplifier gain for SSB
operation. Adjust for an on-scale ALC reading on voice
peaks.
In the CAL ON position, receive frequency can be calibrated
at 25 kHz intervals using the built-in oscillator.
10
20. CAR LEVEL CONTROL @
This controls carrier level during CW operation. Adjust for
approximately 250 mA of plate current.
21. FIX SWITCH
Place this switch ON for fixed channel operation;
(an optional crystal is required. Trio-Kenwood does not
supply these crystals.)
22. MONI (MONITOR) SWITCH @
This delivers a sample of the demodulated transmit IF signal
to the AF for monitoring modulation.
23. RF ATT SWITCH ®
With this switch ON, A 20 dB attenuator is inserted in the
antenna circuit, protecting the RF amplifier and mixer from
overload on strong input signals.
24. DIGITAL DISPLAY
The digital display indicates operating frequency to the
nearest 100 Hz.
25. ANALOG DIAL SCALE
The mono-scale permits direct analog frequency readout
over the O to 500 kHz range, graduated at 1-kHz intervals.
Operating frequency equals the dial (in kHz) plus the BAND
switch frequency (in MHz). An additional 50 kHz both
above and below the 500 kHz range is also covered.
26. MAIN TUNING
This controls the VFO, selecting the transceiver's operating
frequency. The indented knob is convenient for quick
tuning.
27. LOAD CONTROL @
This controls the loading of the network between the final
section and the antenna. Adjustment is described in Section
4.
28. PLATE CONTROL @
This controls the plate tuning of the final amplifiers. Ca-
libration is approximate.
29. DRIVE CONTROL
This control tunes the plate tank circuit of the 12BY 7A
driver as well as the receiver's antenna and mixer coils. In
receive the DRIVE control is tuned for maximum sensitivity
(maximum S-meter deflection), and in transmit for a
maximum ON-SCALE ALC reading. These points occur
concurrently. Tuning for one also achieves the other.