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CARRIER OSCILLATOR PORTION


Test equipment required:

     

Power Supply: 13,8 V

Oscilloscope

Dummy Load 50 ohm

Frequency Counter
       

Preparation alignment:

 

Channel:

40
   

Step

Condition

Adjustment

Procedure

1

MODE: TX FM

L702

Connect Oscilloscope to TP1 and adjust for 4,5V +/- 0.1V

2

MODE: RX FM

L701

Connect Oscilloscope to TP1 and adjust for 4,5V +/- 0.1V

3

MODE: RX FM

CHECK

Connect the Frequency Counter to Ant. jack an scheck frequency for 27.405 MHz /- 20 Hz

  

TRANSMITTER PORTION


Test equipment required:

     

Power Supply: 13,8 V

RF Power Meter

Deviation Meter

Oscilloscope

Audio Oscillator

Dummy Load 50 ohm

    

Preparation alignment:

 

Channel:

19
   

Step

Condition

Adjustment

Procedure

1

MODE: FM
No Mod.

L203

Adjust for maximum output reading on the RF Power meter

2

MODE: FM
No Mod.

RT201

Adjust so LED 4 lights

3

MODE: FM
Mod: 1 kHz, 30 mV

RT202

Adjust for +/- 2 kHz FM-Deviation

  

RECEIVER PORTION


Test equipment required:

     

Power Supply: 13,8 V

RF Signal Generator

AF Signal Generator

Oscilloscope
 

Dummy Load 8 ohm

    

Preparation alignment:

 

Channel:

19
   

Step

Condition

Adjustment

Procedure

1

MODE: AM
Mod: 1 kHz, 60%
SSG output: 0dB (0.5mV)
SQ: Min.

L1 L2
L3 L4

Adjust for maximum output reading on the Oscilloscope

2

MODE: AM
No Mod.
SSG output: 1000uV
SQ: Min

RT1

Adjust so LED 4 lights

3

MODE: AM
Mod: 1 kHz, 60%
SSG output: 1000uV
SQ: Max.

RT2

Adjust RT2 so that the squelch just breaks.

4

MODE: FM
Mod: 1 kHz, +/- 1,5 kHz Dev.
SSG output: 1000uV
SQ: Min.

L6

Connect Oscilloscope to TP1 and adjust L1 for 4.5 V +/- 0.2 V reading on the Oscilloscope

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