Hi all - I am working on some band-reject stubs for my station,
based on some of the archived info I've read on the reflector. I
wonder if someone can give me a brief education on them, in
regards to what impedances should be seen at the reject freqs.
For example, on 40m, a shorted 1/4-wave stub (23 ft) is supposed
to null 10m and 20m. When I hook up an Autek RF-1 connected to
a 50 ohm dummy load, with a Tee connector in the middle with the
stub, I read a Z of 700 ohms at 14 MHz and 10 ohms at 28 Mhz.
Are these figures near what they should be?
With the RF-1 which reading (Z, SWR, etc.) is the best to use to to
tweak the null point?
Any info much appreciated.
Tnx/Barry
--
Barry Kutner, W2UP Internet: w2up@mindspring.com
Newtown, PA FRC alternate: barry@w2up.wells.com
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