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Hi all, Im a bit of a novice and have a dual needle SWR.

I understand the concepts of forward and reverse and standing waves, however, I,m not sure how to read the meter. Do I read off where the needles cross and take the ratio of the forward reading to the reverse reading ?

Also, Im not sure how to calibrate this device since there is no forward, reverse or cal switch. Do i just connect is up and transmitt?

Any help greatly appreciated.