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
|