"Ross Richardson" wrote:
So it is OFF and not just STANDBY?


On King and Narco boxes, turning the thing to STDBY and back to
Mode A or A/C accomplishes nothing to "recycle" the transponder,
whatever that word is supposed to mean to the xpondr mfr! If the
box has a microprocessor (King, Garmin), turning it off and on
again may accomplish something, but doubtfully so.

I liked the earlier post about twiddling the 4 code knobs. On
older generation boxes with wafer switches which can crud up, that
just may work. Same as to jiggling the box in the tray, if just
Mode C is not working.

Fred F.