90672 Antenna Bridge
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This is a James Millen No. 90672 Antenna Bridge for measuring impedance in the range
of 5 to 500 ohms for unbalanced input and 20 to 2000 ohms for balanced input (using
a 4:1 balun) at radio frequencies up to 200 mc. The 90672 was designed to use a
grid dip meter as a signal source. Photo provided by Mike Warren W5MAZ |