Kenwood TS-430S - Manual (Page 7)

SEND: Locks the unit in transmit. Transmission is
locked out (reception only) if the selected transmission
frequency is outside the amateur radio bands, or the
final stage thermal-protects (is deactivated due to ex­
cessive heat-sink temperature).
® VOX switch
Turn this switch on to activate the VOX (Voice Operated
Xmit) during SSB, AM or FM operation or to allow semi­
break-in CW operation.
PROC (Speech processor) switch
This switch is used during SSB or AM operation. At
switch ON the speech processor will be activated, increas­
ing average "talk power".
® METER switch
During transmission, the meter switch determines meter
function. The switch selects between:
ALC - The meter monitors the output of the final stage
power amplifier during transmission. During SSB opera­
tion, adjust the MIC control so that the meter pointer is
within the ALC zone. Similarly, adjust the CAR control for
CW operation. ALC does not indicate in the AM or FM
mode.
1C - The meter monitors final stage collector current.
1 2 - 1 9A is normal, 1 7A typical.
NAR/WIDE switch
This switch selects receive IF bandwidths when optional
filters are installed.
The WIDE position provides the same IF bandwidth for
both CW and SSB. For the NARROW position, optional
filters are available for both CW and SSB. In the AM
mode, the SSB filter is on in the narrow position.
MIC (Microphone) connector (8-pin)
Microphone audio input. Frequency UP/DOWN control
and PTT lines are included. The MC-42S or MC-60A mi­
crophones (optional) are recommended. MIC connector
pin assignments are shown below.
0 PHONES jack
The headphone jack allows use of 4 - 16 ohm (or greater)
impedance headphones. HS-5 or HS-6 optional head­
phones provide optimum results. Stereo-type headphones
can also be used. Headphones will disable the internal or
external speaker.
This control adjusts microphone amplifier gain for SSB
and AM operation. In the SSB mode, adjust for an on-
scale ALC reading at voice peaks. For low power opera­
tion, adjust this control below the ALC range. For AM
mode adjustment, see "AM transmission" page 11.
^ CAR (CARRIER LEVEL) CONTROL
This controls carrier level during CW operation. Adjust the
carrier level for an on-scale ALC meter reading. For low-
power operation, adjust this control below the ALC range.
® MODE switches and indicators
These switches are used to select the mode; USB, LSB,
CW, AM or FM (optional). Each indicator lights corre­
sponding to the mode.
Tuning Knob
This knob controls the dual digital VFO's which operate in
10 Hz step at 10 kHz turn for normal slow tuning, or with
the STEP switch depressed, at 100 Hz step for fast tun­
ing.
® Keyboard
• A = B switch: Depress this switch to equalize the fre­
quency and mode of the idle VFO to that of the operat­
ing VFO.
• LOCK switch: This electrically locks the VFO fre­
quency. When this switch is on, the tuned frequency
does not vary when either the tuning knob or BAND
switch is operated. This is convenient when operating
on the same frequency for extended periods. The RIT
does operate with the LOCK switch on. The F.LOCK in­
dicator lights to show operation.
• STEP switch: Used to select the VFO tuning rate.
• M.CH (Memory channel) switch: Used to select a me­
mory channel as a fixed frequency. With this switch
ON, the channel number is displayed on the M.CH dis­
play 0 .
• MR (Memory recall) switch: Depress to recall a select­
ed channel from memory to the VFO for tunable opera­
tion.
• M.IN (Memory in) switch: Depress to store the dis­
played VFO frequency in to a selected memory channel.
• MS (Memory scan) switch
Depress this switch for memory scan operation.
Only channels with stored data are scanned. Scan rate
is fixed at approximately 1.8 sec./channel.
• PG.S (Program scan) switch
Depress this switch to scan from the frequency stored
in CH 6 to the frequency stored in CH 7. Programmed
Scan Speed is adjustable. However, the presence of a
signal does not stop the scan.
• HOLD (Scan hold) switch
Depress this switch to stop the scan operation. Reset­
ting this switch to OFF resumes the scan operation.
® BAND selector switches
Used to select the amateur or frequency band. When the
UP or DOWN switch is pressed, the band changes by one
step.
MHz step switch
When depressed ON, this allows the band switch to raise
or lower the frequency in 1 MHz steps within the trans­
ceivers full frequency range. At OFF (out) the Band switch
steps the amateur band.