Over the past few days there are more and more people getting on. In a way, it sounds like a traditional linear transponder, with some people exactly on frequency, and most within a 100 Hz or so. It does allow people to break in more easily than the FM mode.
One effect becoming more apparent is deep fading in the audio. I am wondering if this is caused by people outside the passband, but near enough to drive down the gain on the uplink?
Alan WA4SCA
With my satellite antennas still in the garage, I can't hear it but I can say some things to look for.
If the fades onset and release are "smooth and slow", the it is probably induced by geometry coupled with antenna pattern. If the onset of the fades appear to be very sudden, then I would find it more likely this is caused by a strong interferer who "just keyed up".
Bob N4HY
Alan P. Biddle wrote:
Over the past few days there are more and more people getting on. In a way, it sounds like a traditional linear transponder, with some people exactly on frequency, and most within a 100 Hz or so. It does allow people to break in more easily than the FM mode.
One effect becoming more apparent is deep fading in the audio. I am wondering if this is caused by people outside the passband, but near enough to drive down the gain on the uplink?
Alan WA4SCA
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Bob,
I have been listening for that. It doesn't seem to be periodic, and the onset is rapid. Of course, it takes a while to get a pattern once you notice the phenomenon.
Alan WA4SCA
participants (2)
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Alan P. Biddle -
Bob McGwier