Receive 12.5 Khz-Band Tight Squelch Tuning; Figure 5-11. Rx 12.5 Khz-Band Normal Squelch Tuning Window - Motorola EP350 Basic Service Manual

5-10
F1
F2
F3
F4
F5
5.6.3 Receive 12.5 kHz
1. Under the Alignment menu, select Rx Squelch, then select Squelch 12.5 kHz-band Tight.
(Figure 5-12. Rx 12.5 kHz-band Tight Squelch Tuning Window).
2. Apply a RF signal (with 1 kHz tone at 1.5 kHz deviation) for current frequency point with minimum
amplitude, -128 dBm (F1 being the first).
3. Set softpot to minimum (0) and adjust the amplitude of RF signal to the range of tight squelch
tuning (as shown in Table 5-8.) on the test equipment.
4. Adjust the softpot value by using either the Left/Right arrows on the slider or Up/Down arrows on
the Working Softpot box until the radio is totally muted.
5. Repeat steps 2–4 for F2–F5.
6. Press Program to commit the softpot values into the codeplug.

Figure 5-11. Rx 12.5 kHz-band Normal Squelch Tuning Window

Band Tight Squelch Tuning
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Radio Programming and Tuning: Receiver Tuning