[Amps] QRO Questions

Larry Benko xxw0qe at comcast.net
Sat Feb 6 08:38:57 PST 2010


You are referring to RG-142 which can carry over 3KW on 10m.  It is 
teflon and lower loss than RG-58 but it does NOT have less loss than 
RG-214.  It gets its power handling capability by being able to operate 
at high temperature.  Also it is not very flexible since the center 
conductor is a single silver plated copperweld wire.   See 
http://www.timesmicrowave.com/cgi-bin/calculate.pl for a nice coaxial 
cable loss/power calculator.

Larry, W0QE

Ron Youvan wrote:
>> There was a PTFE coax about the size of RG213 that I saw in Germany (at Friedrichshafen maybe?) some time ago, but I can't remember what it's called and have never seen it since.  Anyone know of this stuff?
>>     
>
>    There is a PTFE coax about the size of RG-58 with less loss and more power handling
> capacity than RG214 so what you mention is a lot more than probable.  (as is 1/4"
> superflex)  I like the Times LMR products, while not as efficient as above, many are "direct 
> burnable."  (polyethylene jacket)
>   


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