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 <[email protected]> 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 > > > > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
