[Milsurplus] RT-427/ARC-39

[Jack Antonio]

On 1/17/2016 1:07 PM, Mike Morrow wrote:
> > The only two components with "ARC-39" markings are the RT-427/ARC-39 
 > (with internal 28vdc dynamotor) and the C-2241/ARC-39 control panel. 
 > The RT mount is MT-605A/APR-9.

The radio will fit in a generic mount as well, mine is sitting in an 
MT-52/UR mount.
An MT-171 would probably work as well.

The mount has no electrical function.

   My complete set RT and C units have Pensacola overhaul > stickers for 
first quarter 1970.

Mine has a rework sticker that says NORIS, which I assume is North Island
San Diego?

Even though the radio is spec'd down to 2.0 Mc, it can, with the proper 
crystal,
go to 160, I had mine tuned up at 1980 or so. Didn't try to see how low 
it would go.

Also be aware that even though the radio says 2-9,  6 of channels are 
2-4.27, and
the rest are 4.27 and up.

You do not need the control box to make the radio functional, channel 
select, mic and tel
jacks are on the radio,   but the front panel "volume" is screwdriver 
adjust.  The dynamotor
is noticeable in a quiet shack, but not too bad.

Today, finding and buying crystals for it might be a bit pricey, it 
might be a candidate
for using the Epson programmable oscillator chips Dave S mentioned a 
while back.

Jack Antonio WA7DIA/4