5 kHz is the nominal "wide" setting for ham radio equipment on the VHF/UHF bands. So a rig set to 5 kHz is what we all usually expect. 5 kHz deviation with 3 kHz audio (the usual top for most voice) would be about 16 kHz bandwidth. The deviation number alone is not equal to bandwidth. ("Carson's Rule") Low audio is usually just that, not talking loud enough, not talking into the mic properly, mic gain setting too low, food in the mic hole, etc.
Jerry Buxton, NØJY
On 8/13/2017 17:55, Ronald G. Parsons wrote:
I’ve noticed lately that many stations on AO-85 have barely audible modulation. Yet other stations have clear audio with good quieting. I have heard the some manufacturers of hand-held and mobile rigs are setting their maximum deviation to 5 kHz or even less. I have noticed the same effect on local repeaters. Has anyone done any tests of the deviation required for reasonable quieting on AO-85? Or are more stations using lower power than in the past?
Ron W5RKN _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb