Is this published/documented anywhere? My in-band tower is about 150’ from the
main tower and there is significant interference (but manageable ) between the
two radios.
Rudy N2WQ
Sent using a tiny keyboard. Please excuse brevity, typos, or inappropriate
autocorrect.
> On Sep 7, 2024, at 3:55 PM, Jim Brown <jim@audiosystemsgroup.com> wrote:
>
> On 9/7/2024 11:17 AM, Rudy Bakalov wrote:
>> How does this work? IF this is indeed the case, this would be a great
>> solution for multi-op contest stations.
>
> Very careful design of both RX and TX antennas and their matching networks,
> physical separation of RX and TX antennas, combined with very careful design
> of very narrow-band pass and reject filters for RX, and combiner networks for
> TX that prevent each TX from seeing the other. Combining networks for TV and
> FM broadcast transmitters have been in common use in major cities for more
> than half a century at sites like the Empire State Building, the World Trade
> Center, Chicago's Hancock Building and Sears Tower, and mountaintop sites in
> the West.
>
> Very complex design of both the system and individual components. As one of
> my old EE profs would say, "non-trivial!" Uses everything I learned in EE
> 60+ years, and at a much higher level than I ever did anything. :)
>
> 73, Jim K9YC
>
>
>
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