[Milsurplus] RE2/ARC5

Charlie L. mjcal79 at gmail.com
Fri Jun 13 15:46:29 EDT 2025


I have 2 RE2 antenna relay/RF ammeters, both meters seem inop.  I ohmed out
the thermocouple free of external connections and are identical.  The
meters have continuity, but with a Simpson 260 on RX1, only a flicker of
movement.  I have a note that says these are 6MA movements, guessing that
is DC out of the thermocouple not RF.  My TCS gear, when tuned up to 50
ohms gives an amp reading coincident with RF out,  I would have expected
these meters to do the same.  I get 50 watts out of a BC696A into 50 ohms,
using the RE2 and the 50PF series cap in the back of it to feed 50 ohm
coax, so I hoped to see 1 amp, but got nothing.  I also tried making a
resistive load of 10 ohms to simulate a normal aircraft ant load of between
5-15 ohms, and still no meter reading.  What is the secret to this RF
ammeter if it is not broken?

Charlie in NC
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