At 4/4/2009 13:45, you wrote: >Thanks Rick, > >Duplexer is a RFS 6MC 450s and the Antenna is an RFI CD4 vertical dipole, > >http://www.rfi.com.au/downloads/wireless/RFI-antenna-catalogue.pdf > >With the antenna connected directly to the radio via a length of RG58 i am >reading a vswr of about 1.3 at 35 watts output from the Tx radio. > >Because of the problems with restrictions on Antenna positions and the >path that the cable has to run i doubt that i would be able to run >hardline or its alternative, ( several sharp 90 Degree bends )
OK, if you HAVE to run thin coax between the duplexer & antenna, it should be RG-223 or RG-400, or anything else with silver-plated braid. It won't have any less loss than RG-58, but RG-58 will eventually generate desense when the braid starts oxidizing. Bob NO6B
