Common Section; Transmitter Section - Kenwood TK-2180 Service Manual

TK-2180

Common Section

Item Condition
1. Setting 1) BATT terminal voltage : 7.5V
2) SSG standard modulation
[Wide 5k] MOD : 1kHz, DEV : 3kHz
[Wide 4k] MOD : 1kHz, DEV : 2.4kHz
[Narrow] MOD : 1kHz, DEV : 1.5kHz
2. VCO lock [Panel test mode]
voltage 1) CH-Sig : 7-1
• RX
2) CH-Sig : 2-1
• TX [Panel tuning mode] LPWR*
3) CH-Sig : 7-1
PTT : ON
4) CH-Sig : 2-1
PTT : ON
* TX can be continued on unlock condition in panel tuning mode.
Transmitter Section (K market model skips adjustment of Wide 4k.)
Item Condition
1. Frequency 1) Adj item : [FREQ]
adjust Adjust : [✳✳✳]
PTT : ON
2. Frequency 1) Adj item : [SHFT1]
shift 1 Adjust : [✳✳✳]
2) Adj item : [L SHFT1] →
adjust
[C SHFT1] → [H SHFT1]
Adjust : [✳✳✳]
PTT : ON
3. Frequency 1) Adj item : [SHFT2]
shift 2 Adjust : [✳✳✳]
2) Adj item : [L SHFT2] →
adjust
[C SHFT2] → [H SHFT2]
Adjust : [✳✳✳]
PTT : ON
4. High power 1) Adj item : [HPWR]
adjust Adjust : [✳✳✳]
2) Adj item : [L HPWR] →
[L' HPWR] → [C HPWR] →
[H' HPWR] → [H HPWR]
Adjust : [✳✳✳]
PTT : ON
5. High power [Panel test mode]
check 1) CH-Sig : 1-1
PTT : ON
2) CH-Sig : 2-1
PTT : ON
3) CH-Sig : 3-1
PTT : ON
32
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Power meter Panel ANT TX-RX TC2
DVM TX-RX CV
TX-RX TC1
Measurement
Test-
Unit Terminal Unit
equipment
f. counter Panel ANT Panel
Power meter
Ammeter
Adjustment
Parts Method
± 0.1V
4.20V
Check 0.7V or more
± 0.1V
4.20V
Check 0.7V or more
Adjustment
Parts Method
Selector Center frequency Note : After replacing the
± 40Hz
knob TCXO (X1) align frequency.
± 40Hz
[L SHFT1]
Low frequency+1.25kHz
[C SHFT1]
Center frequency+1.25kHz
[H SHFT1]
High frequency+1.25kHz
± 40Hz
[L SHFT2]
Low frequency+2.5kHz
[C SHFT2]
Center frequency+2.5kHz
[H SHFT2]
High frequency+2.5kHz
± 0.1W
5.0W
2.0A or less
Check 4.5~5.5W
2.1A or less
Specifications/Remarks
Specifications/Remarks