At 10/25/2022 05:35 AM, you wrote:
I've done flat audio in the pass but always use a RC filter to roll off above 3-4khz...no need to go higher as the energy in that area is QUITE low and not needed..I've made GE MVPs rptrs with flat audio and FM on the exciter where it coupled to an ACC RC850 passed Alinco Digital with no problem...had to back off the radio deviation a little...it would clip thru the rptr at high deviation..
I've ran Quantars in flat audio mode using the RSS settings and found great results..but I would never use 5kHz audio b/w...the Carson rule of B/W tells me not to anyway ..it exceeds 16-20K easily.
The above two paragraphs contradict each other: if the spectral energy above 3 kHz is "QUITE low", then that spectrum will not be deviating the TX anywhere near 5 kHz, hence the BW will not be "16-20K". This is probably why I can tune my TYT TH-9800 15 kHz away from the W6MEP 147.240 repeater & listen to a repeater on 147.225 some 50+ miles away with no interference. In the end that is all that matters.
Bob NO6B
