Somewhere in my pile of data books I have an application note that refers to a "simplex repeater" being used in commercial applications. The booklet was from either dB Products or Pye as I recall. The purpose of their "simplex repeater" was to fill local coverage holes. The equipment described consisted of 2 beam antennas, one pointed at the source and the other pointed at the hole with an amplifier and filter between them. The antennas were adjusted for maximum isolation and the amplifier gain was set to be considerably less than the isolation between the antennas.
Similar setups were used in the early days of television to give coverage in behind mountains. These setups would simultaneously transmit on the same frequency. Has anyone else seen such application notes or booklets??? Burt VE2BMQ MCH wrote: > Just because you call something a repeater doesn't mean it is. > > A "simplex repeater" is not a repeater due to two things: 1. It does not > simultaneously retransmit, and 2. It transmits on the same frequency. > Point #1 was just clarified by the FCC Monday, but point #2 has never > been misinterpreted in the FCC definition, AFAIK. > > Joe M. > > Dave Gomberg wrote: >> At 16:34 3/24/2009, Jeff Condit wrote: >>> What do you call it when messages are recorded and then >>> retransmission begins right after reception ends? By this >>> definition it would not constitute a "simplex repeater", right? >> That is exactly m y understanding of what "simplex repeater" means.... >> >>> Jeff Condit >> > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
