Kenwood TS-430S - Manual (Page 4)

SECTION 2. FEATURES
150 kHz - 30 MHz GENERAL COVERAGE RECEIVER
ALL MODE OPERATION
Operating mode include USB, LSB, CW, and AM, both
transmit and receive, with FM optionally available
using the FM-430 frequency modulation unit (installs easi­
ly inside the transceiver). Mode selection is made
by front panel mode keys with adjacent LED indicators.
SUPERIOR RECEIVER DYNAMIC RANGE
The receiver front-end has been carefully designed to pro­
vide an exceptionally wide dynamic range, through
the use of 2SK125 junction-type FET's in the RF amplifier
and balanced mixer circuits.
DUAL DIGITAL VFO's
• 10 Hz step dual digital VFO's include band and mode
information, allowing split frequency or cross-band
operation.
• A STEP switch is provided to permit tuning in 10 Hz
(10 kHz/revolution of the tuning knob), or 100 Hz (100
kHz/revolution) steps.
• An A = B switch is provided to bring the idle VFO to the
active VFO mode and frequency.
• A VFO LOCK switch is provided.
• The RIT control allows shifting the receive frequency in
either VFO or memory mode operation.
EIGHT MEMORY CHANNELS
• Each memory stores frequency, mode and band infor­
mation.
• The memory CH 8 stores both a receive and a transmit
frequency for split-frequency memory operation.
• A front panel MR switch is provided to allow the opera­
tor to operate each of the eight memories as an inde­
pendent VFO, or as a fixed frequency.
LITHIUM BATTERY MEMORY BACK-UP
All memory and VFO information are backed-up by an in­
ternal lithium battery (estimated 5 year life).
IF SHIFT CIRCUIT
The apparent IF passband may be shifted to place interfer­
ing signals outside the passband, while keeping the de­
sired signal optimally placed for best signal-to-noise ratio.
TUNABLE NOTCH FILTER
SPEECH PROCESSOR
The speech processor uses an audio compression ampli­
fier and change in the ALC time constant, resulting in sub­
stantially increased "talk-power".
ALL SOLID-STATE
The TS-430S runs 250W PEP input on CW, on 160-10
meters. In the AM mode, it runs 60W input, all
bands. In the FM mode (optional FM-430 unit installed), it
runs 1 20W input. A built-in cooling fan, plus other protec­
tion circuitry assures maximum final amplifier reliability.
Both the receiver and the solid-state wide band final am­
plifier requires no tuning.
NOISE BLANKER
An effective noise-blanker eliminates pulse-type interfer­
ence such as ignition noise.
RF ATTENUATOR
The carefully designed receiver front-end includes a
switchable 20 dB RF attenuator for intermodulation distor­
tion rejection.
VOX CIRCUIT
Both VOX and push-to-talk operation available. VOX gain,
delay and anti-VOX controls are located on top of the ca­
binet, for easy adjustment. Semi-break-in operation avail­
able in CW, using the built-in sidetone oscillator.
RUGGED CONSTRUCTION AND STYLING
The TS-430S is styled to enhance the appearance of any
fixed or mobile station, while providing maximum ease of
operation through a functional layout of the controls.
MEMORY SCAN
Scans only those memory channels in which data is
stored. The scanning time is approximately 1.8 sec. for
each channel, with a HOLD switch provided to interrupt
the scan.
PROGRAMMABLE BAND SCAN
Scans within the programmed band width.
Memory channel 6 establishes the lower band scan limit,
memory channel 7 the upper limit. The HOLD switch in­
terrupts the scan. Scan speed is externally adjustable.
AUTOMATIC ANTENNA TUNER CONTROL
The band selection of the automatic antenna tuner
AT-250 and TS-430 is possible.
BUILT-IN SQUELCH CIRCUIT EFECTIVE FOR ALL
MODES
OTHER FEATURES
• Meter reads S in receive, 1C or ALC in transmit.
• An audible "beep" from the speaker confirms key entry
operations.
• Indicators provided for VFO A/B, ON AIR, F.LOCK,
F.STEP, RIT, NOTCH, M.CH, and MODE.
• VFO dial drag externally adjustable.
• Remote terminal provided for linear amplifier control.
• Accessory terminal provides band information.
• Transverter terminal is provided on the rear panel.