Please have mercy on a history major...
I'm trying to wind a binoocular core matching transformer for 75-ohm
coax to a BOG with (for a start) 270 ohms of terminating resistance. I
figure that is a 4:1 stepdown, which should require a turns ratio of
2:1. Initially I wound a #73 core with identical windings, 3 passes each.
I put this on the output of my MFJ-259 with a 270-ohm resistance on the
secondary. To my surprise the MFJ read 135 ohms, not 270 as I would
have expected. Is this not appropriate as a way of measuring the
transformer? Should I just go ahead and wind 2:1, and if so, how many
turns/passes are appropriate for 160M?
--
73, Pete N4ZR
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