Peter,
A directional coupler similar to the Elecraft CP1 is used in many
wattmeter applications, and should not create any unusual impedance
discontinuity.
You can in fact use an RF probe (or 'scope) at the FWD and the REV
terminals of the CP1 to measure the RF voltage and calculate the power
and SWR.
73,
Don W3FPR
PE1E wrote:
I want to check the various possible mismatches between the
(coax)feedline and antenna feedpoint( adjustable loaded dipole ).
What is the influence - if any - of the Elecraft 30 dB directional
coupler ( mounted in the mast right at the antenna's feedpoint ) on the
transition from feedline to antenne feedpoint ?
Does the directional coupler cause an ( extra ) impedance jump between
feedline and antenna feedpoint , disturbing the values of the FW and Rev
readings ?
Thanks,
Peter, PE1E
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