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Cobra MR HH330 FLT - Alignment and Adjustment; TEST EQUIPMENT

Cobra MR HH330 FLT
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ALIGNMENT AND ADJUSTMENT
This transceiver is completely aligned at the factory and does not require any adjustments for installation.
However it is considered as good practice to verify that none of the adjustments have changed.
The test equipment listed below are used for the test setup shown in Fig. 3.1.
This test setup used either partially or totally during the following adjustments.
A.TEST EQUIPMENT
1) DC Power Supply (7.2V DC) 0 - 15V 3A max.
2) RF Power Meter 10 W 50 Ohm 100-200 MHz
3) RF Signal Generator 100-200 MHz, 50 ohm termination
4) FM Linear Detector (FMLD) 100-200 MHz
5) Frequency Counter 1-500 MHz
6) Oscilloscope 20 MHz
7) Distortion Meter
8) SINADDER (Trademark of Helper Instruments Co.)
9) Audio Oscillator
10) Toggle Switch (for use as PTT switch).
Fig. 3.1
RF POWER
METER
DC POWER
SUPPLY
AUDIO OSC
PTT
SWITCH
UNIT
UNDER TEST
OSCILLOSCOPE
SINADDER
FMLD
FREQ
COUNTER
DISTORT
METER
RF SG
SPEAKER
JACK
MIC
ANT
RX
RY
COUPLER
8

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