Lots of times those BpBr cans will pass stuff not too far from the desired pass freq - A 2 loop BP cavity could very well help with receiver overload from a 155 Mhz signal - a simple test would be to hook a receiver to the REC port of the duplexer and see how strong the 155 Mhz signal is.
As far as the placement of the BP cavity in line with the receiver, first, kill the transmitter and see what the receiver sensitivity through the duplexer might be. Next, add the BP cavity and see how much it impairs the receiver - then you decide - Me thinks the cable lengths won't make much difference, but as my friend Jack Daniel at RF Solutions sez, but I might be wrong. Best 73 and let us know how the extra can works out. Steve NU5D skipp025 wrote: > > I don't have time to debate or argue the point...
