Kenwood TS-430S - Manual (Page 13)

5.3.4. VOX DELAY CONTROL
This control adjusts the VOX circuit transmit hold time. If
the hold time is too short, the transceiver will return to re­
ceive mode as soon as you stop talking into the micro­
phone. This can be eliminated by advancing the control.
Adjust the control for comfortable operation at a normal
rate of speech.
5.4 SEMI-BREAK-IN OPERATION
The TS-430S has a built-in side-tone oscillator which,
used in conjunction with the VOX circuit, allows semi­
break-in operation, besides the conventional (SEND switch
controlled) CW operation. During semi-break-in operation,
the transceiver is placed in transmit mode when the key is
depressed, and returns to receive mode when the key is
released. The VOX circuit is activated by the side-tone.
For semi-break-in operation, set the VOX switch ON and
the MODE switch to CW. Adjust the VOX GAIN to insure
that the transceiver is set in transmit mode whenever the
key is depressed. Also, adjust the VOX DELAY for the de­
sired hold time.
ANTI VOX adjustment is not required.
— NOTES:--------------------------------------------------------------------
In VOX operation (semi-break-in) with VFO A/B or
transmission/reception memory (CH8), the following
combination is not possible by the circuit configur­
ation.
BX TX
ANY VOICE MODE CW (Semi-break-in)
CW
LSB, USB (VOX)
Any voice mode
VOX
5.5 OPERATION WITH A LINEAR
AMPLIFIER
The remote connector on the rear panel provides for inter­
connection with an amplifier. See the amplifier instruction
manual to determine whether the linear requires a normal­
ly opened or normally closed (during receive) relay con­
tact. Connect the amplifier control line to either pin 5
(N.C.) or pin 4 (N.O. during receive). Connect the Ground
(Shield) of the Control Line to Pin 2. Connect amplifier
ALC to pin 6 of the remote connector. The TS-430S out­
put is quite adequate to drive most amplifiers to full rated
output.
For full details, see section 6.8, page 22.
For CW operation, your transmit frequency should be
"zero-beat" to the transmit frequency of the station you
are contacting. This also allows your contact to receive
your signal without having to retune his receiver. Tuning
methods are detailed in the following paragraphs.
5.6 CW OPERATION
Your frequency
1
Receiver carrier frequency ^.,^1
(BFO) 1
1
1
1
Displayed frequency
T ransmit-Receive frequency
(Displayed frequency)
800Hz
Beat note
Fig. 5-6 Tuning for CW Operation
MOTE: --------------------------------------------------------------------------------
1. In CW mode, transmit frequency is displayed when
both transmitting or receiving.
2. During CW operation, operating the BAND switch
differs from other modes; for example, pressing the UP
(BAND) switch at display frequency 14,000.0 shows as
follows.
14,000.0 ^ 14,500.0 ^ 18,500.0 ....->UP
10,500.0 ^ 14,500.0 DOWN
5.6.1. OPERATION WITHOUT AN OPTIONAL
CW FILTER
Set the IF SHIFT control to its center position and the BIT
switch OFF. Adjust the main tuning control for an 800-Hz
beat note and your transmit frequency will then coincide
with that of your contact station ("zero-beat"). During re­
ception, the side-tone monitor is activated by pressing
down the key (VOX OFF). In this case, listen to the side-
tone superimposed on the receive signal and adjust the
main tuning for similar side-tone and incoming CW audio
tone. By so doing, transmit frequencies will coincide.
You may now adjust the BIT for a pitch which suits your
preference. If interference is encountered, adjust the IF
SHIFT. For more convenient and effective CW operation,
use of the optional YK-88C or YK-88CN CW crystal filter
is recommended.
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