Realisitic TRC453 Service Manual

Realistic TRC453
Documentation Project
CBTricks.com
RX Alignment Procedure:

Refer to ALIGNMENT POINTS

Equipment Required
a. RF Signal Generator (27 MHz Band, 50 ohm output impedance)
b- AF SSVM
c. Oscilloscope (For AF Signal)
d. DC Power Supply
e, 8 ohm Load
f. Oscilloscope (0 - 50 MHz)

STEP | SETTINGS | CONNECTION | ADJUST | ADJUST FOR

1.

Channel: 19
Clarifier center
Volume fully clockwise
RF GAIN fully clockwise
Squelch fully counter clockwise
NB/ANL : off Mode AM

Set the SG on channel 19 27.185 MHz with 1 kHz,30% modulation.

2 | Same as step 1 | Adjust the level of SG to obtain 2V reading on AF SSVM. | L11, L10, L8, L7, L6 L5, L4, and L3 | Then adjust coils for maximum reading on AF SSVM. Repeat this step reducing the SG output.
3 | Same as step 1 | Same as above | L3 | Adjust for max. reading on AF SSVM, Check the sensitivity difference between CH1 and 40. If it is over 1 dB, re-adjust L3 to obtain within 1 dB.
4 | Same as step 1 except squelch is fully clockwise. | Set the level of SG to 1000uV. | VR2 | Then adjust so that the AF signal will just appear on Oscilloscope.
5. | Same as step 1 | Set the level of SG to 100uV. | VR1 | Then adjust for "S-9" reading on Transceiver's meter.
6 | Same as step 1 except NB/ANL switch is ON. | Connect the Oscilloscope to TP1. | L2 | Adjust the level of SG to approx. 1.6uV. Then adjust for max. DC reading.

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we cannot guarantee that the instructions will work on every radio presented.