At 9/11/2008 23:25, you wrote: >Overdeviated is a different beast, since our repeaters are coordinated >for not only a specific frequency, but also a bandwidth, so to speak. >Thus, a limiter that either cuts them off completely or keeps them >within the confines of the repeater's coordinated deviation limits, is >required. That's the only time we "do anything" to their signal and >we use the factory limiter circuit in the MASTR II.)
When considering occupied BW, that's only part of the equation. Modulation bandpass is important too. Here in SoCal on 2 meters we specify a 3 kHz cutoff, with all modulation products down 20 dB @ 4.4 kHz. Unfortunately that makes "flat audio" an impossibility, but that's the price to pay for a proper 15 kHz spacing implementation. Bob NO6B
