What does the Reference Frequency setting do?




Although hardly ever used, the Reference Frequency setting in the CPS can be used in very specific circumstances to eliminate self-quieting, when receiving on specific frequencies that would otherwise be blocked by internally generated spurious signals.

Internally generated spurious signals would appear as weak silent carriers on certain frequencies.
Shifting the reference frequency allows these permanent signal carrier to be shifted to unused frequencies so that the desired channel frequencies can still be used. The options in most MOTOTRBO radios are Default; Nominal or Alternate.

There is also a Reference Frequency setting for TX. This is the same as the one for RX but in this case, the reference frequency is shifted during transmit and is intended to prevent the transmitting radio from interfering with other radios which are closeby (i.e with a meter or do) in certain circumstances.

If altering the Reference Frequency setting does not resolve the interference, then the issue lies elsewhere - not the radio. Altering the Reference Frequency setting won't have an impact on frequency stability and the radio should otherwise perform normally.

From experience, for 99,999999999999999999% of cases, you can leave this setting on Default.
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