Kenwood TS-430S Manuel d'utilisateur télécharger pdf (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.

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Kenwood TS-430S Manuel d'utilisateur Page 4

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