Specifications

9. Adjust T6 and T7 for maximum sensitivity. These adjustments have a very broad range where little change
in sensitivity is noted while the adjustment is being made. The slugs should be set in the middle of this
range.
10. Check the sensitivity at the lowest and highest receive frequencies. If necessary, repeat steps (8) and (9)
above at the lowest middle and highest frequencies for the best overall sensitivity.
Receiver Squelch Adjustment
1. Set the channel selector for the mid-frequency receive channel.
2. Connect an RF signal generator or communications service monitor to the antenna connector. The
modulation should be set for ± 3 kHz FM modulation of a 1 kHz tone. The RF output level should be at a
minimum.
3. Adjust the squelch control to the threshold point (the point where the speaker audio disappears).
4. Increase the RF signal generator output level until speaker audio output reappears. Note the generator level.
5. Turn the SQUELCH control fully clockwise.
6. Increase the RF signal generator level by 16 dB.
7. Adjust RV1 until the squelch is again at threshold.
• NOTE: This squelch adjustment procedure is very important for the correct operation of the microprocessor
aided squelch system.
MONOGRAM SERIES LBI-38864B
ALIGNMENT PROCEDURE
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Nov. 94