[sudo-discuss] there are no LPFM slots on the FM band in the bay area, period.

[Anthony Di Franco]

There would be a moire pattern of regions of roughly the dimensions of a
wavelength (~3 meters) within which interference would be mainly
constructive or mainly destructive. Reception would suck or not exist in
all the regions where interference was not constructive. Then the usual
multi-path interference issues.​ Complicated and a good reason to keep
transmitters well spaced-out. To do this right you are pretty much building
a phased-array antenna which uses the interference intentionally to aim the
beam by varying the synchronization among the signals from the different
antennas and that is way too complicated for this - you have to track the
location of the receivers somehow for one thing, and that's just the
beginning.


On Mon, Nov 4, 2013 at 2:01 PM, David Keenan <dkeenan44 at gmail.com> wrote:

> Also - this is a really dumb question but in terms of interference, I
> actually have no idea what sort of interference results when two
> coverage-adjacent radios are broadcasting the exact same signal? Does it
> make any difference if they'd both be broadcasting the same signal? I
> should remember this, since I actually took one of those AARL tests wayyy
> back when (and I think I am technically FCC licensed, at least for certain
> spectrums like SSB? Can't exactly remember..i should have a certificate
> somewhere)
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