[ARC5] FT-230A panel adapter...not

[Mike Morrow]

> I also have a couple of the MX-20 aux power adapters.  Any idea what
> these were used for?

You'd be really puzzled by the MX-19/ARC-5 then. :-)

There is a list of all 10 major variations (13 different nomenclatures) of the adapter panels that was posted here six days ago.

 http://mailman.qth.net/pipermail/arc5/2016-July/025191.html

> Maybe to power the LM frequency meters?

Robert mentioned the principal *intended* use with the homing adapters, which is why broadcast band receivers were *always* supplied with the power adaptor panel.  WRT the R-24/ARC-5 and its MX-20/ARC-5, it is very doubtful that any were ever used in service.  The AN/ARR-2 homing receiver made the R-24 one of the most useless items made in WWII.  It is likely that the only BCB receiver that saw actual war service was the ARA CBY-46145, with the ZB-2 or -3 homing adapter.

So...the common MX-20/ARC-5 installed in a stabilized R-25, R-26, or R-27/ARC-5 communication receiver would power the technician's calibration unit used to adjust the receiver for preset locked-tuned service.  The calibration signal would come from an LM-* meter or even an O-4/ARC-5.

Mike / KK5F