Icom IC-F4TR Adjustment Procedure
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Also See for IC-F4TR:
- Service manual (25 pages) ,
- Adjustment procedure (4 pages) ,
- Instruction manual (2 pages)
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ADJUSTMENT PROCEDURES
PLL ADJUSTMENT for IC-F4TR
ADJUSTMENT
ADJUSTMENT CONDITIONS
PLL LOCK
1 Operating freq:
VOLTAGE
400.000 MHz
Receiving
2 Operating freq:
400.000 MHz
Transmitting
3 Operating freq:
430.000 MHz
Receiving
4 Operating freq:
430.000 MHz
Transmitting
MEASUREMENT
UNIT
LOCATION
MAIN Connect a multimeter
to check point CP1.
ADJUSTMENT
VALUE
UNIT
ADJUST
1.3 V
MAIN L11
L405
3.5V-
Verify
4.5V
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Summary of Contents for Icom IC-F4TR
- Page 1 ADJUSTMENT PROCEDURES PLL ADJUSTMENT for IC-F4TR MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST PLL LOCK 1 Operating freq: MAIN Connect a multimeter 1.3 V MAIN L11 VOLTAGE 400.000 MHz to check point CP1. Receiving 2 Operating freq: L405 400.000 MHz...
- Page 2 TRIMMER ADJUSTMENT for IC-F4TR ADJUSTMENT MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION REFERENCE 1 Operating freq: Loosely couple a 430.000000 MHz push[up]or[down] FREQUENCY 430.000 MHz panel frequency counter keys on the com- Transmitting to the antenna puter key-board. connector OUTPUT...
- Page 3 TRANSMITTER ADJUSTMENT for IC-F4TR MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST 1 Operating freq: Set to Connect an FM devia- MAIN R119 BALANCE flat wave 415.000 MHz panel tion meter to the an- tenna connector thro- gh an attenuator.
- Page 4 RECEIVER ADJUSTMENT for IC-F4TR MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT LOCATION UNIT ADJUST SQUELCH 1 Operating freq: Connect an SSG to 12dB SINAD Output LEVEL 415.000 MHz panel the antenna connector level Wide/Narrow switch:Wide and SINAD meter with Set the SSG as:...