Kenwood TK-385, Service Manual

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TK-385
25
• Controls
Controls “FNC” appears “FNC” not appears
[PTT] Used when making a Used when making
transmission. a transmission.
[AUX] Release FNC Unused
[Call] Release FNC Monitor ON and OFF.
[Clear] Lamp ON/OFF No Func
[A] FFSK 1200bps Sets to the Tuning
and 2400bps mode.
[B] Release FNC FNC ON.
[C] Compander function RF power HIGH and
ON and OFF. LOW.
[D] Beat shift ON and OFF Changes signalling.
[O] to [9], No Func No Func
and [#], [
∗
]
[ENCODER] Release FNC Changes channel.
ADJUSTMENT
Test Mode
■
Test mode operating features
This transceiver has a test mode.
To enter test mode, press
[B] key and turn power on. Hold [B] key until test channel
No. and test signalling No. appears on LCD. Test mode
can be inhibited by programming. To exit test mode, switch
the power on again. The following functions are available in
test mode.
• LCD indicator
“SCN”
Unused
“ ” Lights at Compander ON.
“LO” Lights at RF Power Low.
“P” Unused
“MON” Lights at moniter ON.
“SVC” Unlock
“ ” Lights at FFSK 2400bps.
• LED indicator
Red LED
Lights during transmission. Blinks at the low
battery voltage warning.
Green LED Lights when there is a carrier.
• Sub LCD indicator
“FNC”
appears at Function ON.
■
Frequency and signalling
The set has been adjusted for the frequencies shown in the
following table. When required. re-adjust them following the
adjustment procedure to obtain the frequencies you want in
actual operation.
Frequency (MHz) (K type)
Channel No. RX frequency TX frequency
1 455.05000 455.10000
2 440.05000 440.10000
3 469.95000 469.90000
4 460.00000 460.00000
5 460.20000 460.20000
6 460.40000 460.40000
7 ~ 16
Note
You must adjust the frequencies in all channels as shown
above, even though the channel frequencies in the 2 row are
below the specifications of the TK-385.
Signalling
Signalling No. RX TX
1 None None
2 None 100Hz Square wave
3 QT 67.0Hz QT 67.0Hz
4 QT 151.4Hz QT 151.4Hz
5 QT 210.7Hz QT 210.7Hz
6 QT 250.3Hz QT 250.3Hz
7 DQT 023N DQT 023N
8 DQT 754I DQT 754I
9 None DTMF tone 9
10 None Single Tone 1600Hz
(HSD OUT)
11 None Single Tone 1200Hz
(MODEM OUT)
12 None Single Tone 1800Hz
(MODEM OUT)
13 None FFSK(PN pattern)
14 FFSK(CODE) FFSK(CODE)
• Preparations for tuning the transceiver
Before attempting to tune the transceiver, connect the unit
to a suitable power supply.
Whenever the transmitter is turned, the unit must be
connected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
16
Ω
dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.
• Transceiver tuning
(To place transceiver in tuning mode)
Channel appears on LCD. Set channel according to tuning
requirements.