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TRIMMER ADJUSTMENT for IC-F4TR

ADJUSTMENT

UNIT

LOCATION

REFERENCE1 Operating freq:

Top

Loosely couple a

430.000000 MHz push[up]or[down]

FREQUENCY   512.000 MHz

panel frequency counter

keys on the com-

Transmitting

to the antenna

puter key-board.

connector

OUTPUT

1 Operating freq:

Top

Connected comput-

80

push[up]or[down]

POWER

  480.000 MHz

panel er screen "Power

keys on the com-

High/Low switch:High

(Hi)".

puter key-board.

2 Transmitting

Connect an RFpower Maximum output Adjust C467 on
meter to the ante-

the MAIN unit.

nna connector.

(see detailed
illustration at
right)

3 Operating freq:

4.2 W

push[up]or[down]

  500.000 MHz

keys on the com-

High/Low switch:High

puter key-board.

Transmitting

4 High/Low switch:Low

0.5W-2.0W

Verify

Transmitting

BPF1-BPF4 1 Operating freq:

Top

Connect an SSG to

Minimum distor- push[up]or[down]

  480.000 MHz

panel the antenna conne-

tion level

keys on the com-

Set the SSG as:

ctor and a SINAD

puter key-board.

  Level       :+20dBuV

meter with 8 ohm

  Modulation  :1kHz

load to the [SP]

  Deviation   :3.0kHz(W)

jack.

              :1.5kHz(N)
Receiving

ADJUSTMENTADJUSTMENT CONDITIONS

MEASUREMENT

VALUE

Summary of Contents for IC-F4TR

Page 1: ...eq MAIN Connect a multimeter 1 3 V MAIN L11 VOLTAGE 480 000 MHz to check point CP1 Receiving 2 Operating freq L405 480 000 MHz Transmitting 3 Operating freq 3 5V Verify 512 000 MHz 4 5V Receiving 4 Operating freq 512 000 MHz Transmitting ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS MEASUREMENT VALUE ...

Page 2: ...an RFpower Maximum output Adjust C467 on meter to the ante the MAIN unit nna connector see detailed illustration at right 3 Operating freq 4 2 W push up or down 500 000 MHz keys on the com High Low switch High puter key board Transmitting 4 High Low switch Low 0 5W 2 0W Verify Transmitting BPF1 BPF4 1 Operating freq Top Connect an SSG to Minimum distor push up or down 480 000 MHz panel the antenna...

Page 3: ... an attenuator FM 1 Operating freq Top Connect an FM devia 3 5kHz MAIN R564 DEVIATION 500 000 MHz panel tion meter to the Wide Narrow switch Wide antenna connector Connect an audio genera through sn attenuator tor to the MIC jack and set as 1kHz 100mV Set an FM deviation meter as HPF OFF LPF 20kHz De emphasis OFF Detector P P 2 Transmitting ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS MEASUREMENT V...

Page 4: ... panel the antenna connector level Wide Narrow switch Wide and SINAD meter with Set the SSG as an 8ohm load to the Modulation 1kHz antenna connector Deviation 3 0kHz Receiving 2 Turn R92 clockwise to At the point MAIN R92 close squelch where the au Receiving dio signals just appears ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS MEASUREMENT VALUE ...

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