Richard Clark wrote:

On Sat, 30 Oct 2004 22:10:10 -0700, "Carl J. Hixon"
wrote:
Hi Carl-

Tho, the rest are ok- must disagree on the SWR bridge, as some of those cheap
ones (Swan Electronics was a good example, among others) used lousey sampleing
circuits in their directional couplers. What does this do?? well, as these
are NOT even close to 50 ohm , and a substancial part of a 1/4 wave, actually
introduce a mismatch! It is easy to test for- simply terminate the antenna
with a 47 ohm 2 watt resistor, and measure the swr -should be 1:1-- then reverse
the meter and measure the swr -backwards (set the pot , in the REFLECTED position
then measure the swr in the Calibrate (or forward) position again should read 1:1
I have seen some (like the swan) reading greater than 3:1 at even 6 meters! Also,
on very high swrs, have actually seen "more" power return than was in the calibrate
position (a impossible situation !) This is caused you the lousey directional couplers
in the meter, itself!
These were made for CB, not for VHF! If it doesn't pass this test- would be a good idea
to try another brand or (perferaably) borrow a Bird (or equivalent). As information--
Jim NN7K

(3) Where can I finde a descent but cheap SWR meter?

Radio Shack.

73's
Richard Clark, KB7QHC


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