Maker Pro
Maker Pro

Forward/Reverse SWR meter.

T

terry

Jan 1, 1970
0
SWR meter with badly damaged galvanometer.

Meter deflects (what little is left of it!) and appears to be about 30
to 50 micro amps FSD.

Have a replacement galvanometer that fits perfectly but has about one
fifth sensitivity.

The replacement has at least a 250 microamp FSD movement; maybe even
500 micro amps! Intend to do more precise measurement.

But regardless; could one add a small DC amplifier to increase the
current feeding the galvo. and then calibrate it to deflect the meter
correctly?

Aso adding a small battery and battery switch to power the DC
amplifier unit which would only need to be switched on when doing
measurements.

Advice/possible circuit appreciated.
 
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