Ian White GM3SEK wrote:
Where the RF current meter really helps is if you decide you do have an
RFI problem. Then it lets you *see* how well you're managing to fix it.
Too much of RFI investigation work is like groping in the dark. The RF
current meter is like taking a blindfold off.

And the "RF current meter" doesn't have to be expensive or
complicated. A before/after relative current value may be
all one needs. I use a toroid with ten turns feeding a
1N34A curcuit and a DC voltmeter with very short leads. It
was "calibrated" using forward current into a 50 ohm load.

Simple measurements like this are covered in, "Baluns,
What They Do And How They Do It", by Roy, W7EL, in the
ARRL Antenna Compendium, Vol 1, article available at:

http://www.eznec.com/Amateur/Articles/
--
73, Cecil http://www.qsl.net/w5dxp


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