[Antennas] From transmission lines to tuners

Sun, 22 Dec 2002 01:27:19 +0000

>>A KW into a tuner with 60% loss means that the tuner
>>must dissipate 600 watts - not likely.
> This has been my 'bull$hit' touchstone for many years.


   I agree, I don't care how you calculate the losses, I have yet
to see a blower on an antenna tuner.  I have worked on broadcast
antenna tuners and phasor cabinets (.54 to 1.55 mHz) running
50 kW and I could not find any cooling system,  Things get warm,
but I never saw any copper that was oxidized from above normal
temperatures.
   I suspect the high losses that are easily calculated result in
crappy results, so we re-tune the thing, change antennas or whatever
it takes to get results.  (With minimal losses.)
-- 
        73 (= Best Regards) de: Ron [email protected]
     100% Slack. since July, 1997 (still free!) SENT D&T are UTC
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