At 1/19/2007 18:25, you wrote: >Actually, the electronic CTCSS decoders react about the same as the old >reeds. The physics of the matter causes the filters that can discern >for instance - 100 Hz from 97 Hz or 103 Hz to be very narrow, and they >ring - even when the driving tone is removed. By reversing the tone >phase for a short period of time, the energy in the filter is driven to >zero very quickly, and if the tone is removed from the decoder input at >the right time, the tone decoder closes very quickly, and you get very >short squelch bursts at the end of a transmission.
I was never able to get a ComSpec TS-32 decoder to respond to reverse burst of any kind. Bob NO6B
