Power vs BNCs

Alex [Temple Boatanchors] temple.boatanchors1 at MIWWW.COM
Wed Jul 25 21:41:16 EDT 2007

At 09:22 PM 7/25/2007, you wrote:
>I have had, for several years, a very nice Waters 369A Reflectometer. It is
>basically an SWR/power meter, with 2 vertical meters, with a switchable
>maximum FWD Power scale of 200W or 2000W. The thing is: it uses BNC
>connectors. Does anyone have any idea what the deal is? I am under the
>impression that BNC connectors aren't capable of that much. Much less most
>of the cables you would have BNC connectors on. I do understand there are
>some TFE cables that would probably take it, but still it just seems
>While I normally run a great deal less than 1KW, I DO have the capability,
>and was thinking about using it since my old meters had an unfortunate
>accident involving 1/4 inch of kitchen sink/garbage disposal/dishwasher
>'water' all over them for over a month while I was recovering (DEC 2005)
>from heart surgery.
>Thoughts, comments???
>Ed Tanton

Hi Ed,

Maybe the meter uses a separate unit where the power sensors are 
located, and where the "real" power has to go through. Perhaps the 
BNC connectors are only used to connect both units together and only 
carries the power sensing voltage. I really not familiar with the 
reflectometer model you have, but I agree that it would not be 
reasonable to pass 2KW through a BNC connector.


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