Kenwood TK-280 Service Manual page 42

TK-280
[Panel Tuning Mode except when Panel TEST Mode is specified.]
Item Condition
12.LTR 1) Adj item [FLTR]
Deviation Adjust [∗∗∗]
Adjust LPF:3kHz
HPF:OFF
[Wide] 2) Adj item
[L FLTR] ➞ [C FLTR] ➞ [H FLTR]
Adjust [∗∗∗]
PTT:ON
[Narrow] 3) Adj item [n FLTR]
Adjust [∗∗∗]
PTT:ON
13.DTMF 1) Adj item [DTMF]
Deviation Adjust [∗∗∗]
Adjust LPF:15kHz
[Wide] HPF:OFF
PTT:ON
[Narrow] 2) Adj item [n DTMF]
Adjust [∗∗∗]
PTT:ON
14.MSK 1) Adj item [FMSK]
Deviation Adjust [∗∗∗]
Adjust LPF:15kHz
[Wide] HPF:OFF
PTT:ON
[Narrow] 2) Adj item [n FMSK]
Adjust [∗∗∗]
PTT:ON
15.TONE 1) Adj item [TONE]
Deviation Adjust [∗∗∗]
Adjust LPF:15kHz
[Wide] HPF:OFF
PTT:ON
[Narrow] 2) Adj item [n TONE]
Adjust [∗∗∗]
PTT:ON
16.BATT 1) Adj item [BATT]
Detection Adjust [∗∗∗]
Writing PTT:ON
17.BATT [Panel Test Mode]
Detection 1) CH-Sig:1-1
Check BATT terminal voltage:6.5V
PTT:ON
2) BATT terminal voltage:5.7V
PTT:ON
42
ADJUSTMENT
Measurement
Test equipment Unit Terminal
Power meter Panel ANT
Dev meter universal
Oscilloscope connector
AG
AF VTVM
Power meter Panel ANT
DVM BATT
terminal
Adjustment
Unit Parts Method
Panel Encoder 1.0kHz
knob
0.75kHz
Wide:2.5kHz ±0.1kHz
Narrow:1.25kHz
Panel Encoder After pressing BATT terminal
knob the PTT switch, voltage:6.2V
confirm that
one predeter-
mined numeric
in the range 1
to 256 appears
and then press
[B] key. That
numeric will be
stored in memory.
Check
Specifications/
Remark
±0.1kHz
±50Hz
No blinking of LED
Blinking of LED