[Amps] QRO Questions

Paul Christensen w9ac at arrl.net
Sat Feb 6 20:16:49 PST 2010


>>   There is a PTFE coax about the size of RG-58 with less loss and more
>> power handling

> RG-142B
> Carl
> KM1H

RG-400 is another PTFE variant, being similar to RG-142.  Tooling dimensions 
are identical to RG-58 and RG-142; crimping and stripping tools designed for 
RG-58 work well with either RG-142 or RG-400.

I'm now using RG-400 for all inside shack coaxial cabling, including 
post-amplifiers.  Outside, the cabling transitions into either LMR400 or 
600-ohm open line on ceramic spreaders.  With RG-400, I opted for slightly 
more loss in the shack with relatively short cable runs, but the benefit is 
in having bundled cables that take up a fraction of LMR/RG-213 types.

Paul, W9AC 



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