Section 3
ALIGNMENT PROCEDURE #4 .
This section applies to the alignment of Uniden 858 SSB chassis.
Alignment: Align L17 and L24 as per the general alignment procedure described
in general alignment procedure.
Fig.
27 - Parts Location 858 Chassis SSB
NOTE: The following alignment is not necessary in most cases.
Alignment of Offsets
Radio Control Settings:
Clarifier - centered
Mode - AM
DS-400 - 27.1555
1. Connect a frequency counter to TP8.
2. Adjust CT6 for 34.9550 MHz ± 20 Hz.
3. Set the mode switch to USB and adjust CT4 for 34.9575 MHz ±
20 Hz.
4. Set the mode switch to LSB and adjust CT5 for 34.9525 MHz ±
20 Hz.
5. Disconnect the counter from TP8 and connect the probe to TP9.
6. With the radio on LSB adjust CT2 for 7.8025 MHz + 5 Hz - 0 Hz.
7. Set the mode switch to USB and adjust CT3 for 7.7975 MHz + 0 Hz - 5
Hz.
This completes the
offset alignment procedure.
NOTE: 858 SSB
radios have been known to have problems on lower frequency Am operation.
If the radio is to be used on AM below 26.700, change the value of 8.159
from 1 K to 510 ohms.
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