Someone asked what I was using to measure my antenna impedance.
It is an old Eldico bridge (Heath made a similar one).
The schematic is at www.aurora.edu/~broehrig/zbdg.jpg
I excite it with my H-P 200CD osc which has more than enough drive.
(On H-F I use my Measurements grid dipper).
73 Bob Roehrig K9EUI
Aurora University Telecom/IS dept.
630-844-4898 [email protected]