RadioBanter - Galaxy V Panel Meter Calibration

Hi, Gang

I've recently picked up a 1966 vintage WRL Galaxy V transceiver -
a nice rig, once you get over the fear of imminant electrocution
(no cover over the 950V on the final tubes, not even
a latch to hold the cabinet lid down.) It was obviously built
to a price, but has held up well.

The panel meter is only marked in S/Units, with a few marks
labeled "tune" "Voice" and "cw". I hooked an external d.c.
current source to the common cathodes of the final tubes,
and ran a calibration check, since the manual didn't disclose
what the panel meter marks represented. I held the small T/R
relay closed by hand, so the panel meter would be set up
to indicate cathode current.

The "S 4-1/2" point (for SSB bias with no drive), is 60mA.
The "tune" point is 200 mA.
The "c.w." point is 380 mA.

73,
Ed Knobloch