Re: [TenTec] balanced feedline light bulb test

["Dr. Gerald N. Johnson, electrical engineer" <geraldj@isunet.net>]

Who here has a matched PAIR of RF voltmeters good for transmit power?
Not many compared to the number that could come up with small lamps.

As far as I recall, the inductively coupled indicators don't show
balance, if the ratio of inductive to capacitive coupling is right, they
might show line SWR. On the antenna side of a tuner SWR isn't so much of
a concern, that's what the tuner did for the radio.

For most of radio time, antenna balance has been based on current, not
voltage to ground. That may have come from the use of shunted lamps and
RF ammeters.

73, Jerry, K0CQ
-- 
Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
Reproduction by permission only.