[ARC5] RAV vs ARA Component Numbers

[Gordon White]

The RAV receiver plates say "...a unit of RAV equipment"

for example 46103 is the 520-1500 kc RAV receiver

It seems to me A.R.C. designed  the RAV LF receivers, then were required 
to take off the loop fittings (ARA and SCR-274N were quite a bit alike) 
and went back to them for the AN/ARC-5

BTW, I found another "M" item, MX-19/ARC-5, an adapter for the receivers 
that has a small plug and a relay inside the adapter

- Gordon White