[ARC5] ARC5 Digest, Vol 80, Issue 93 - ARC-3

[Andy Young]

Mike wrote -

> The control box C-118 or C-118A/ARC-3 and external volume control 
> C-97/ARC-3,
> with the even rarer FT-240 mounthing plate for the C-118, are not at all
> common in the USA.  The C-118 is a large, awkward, complex, 
> expensive-to-make
> pushbutton abomination after the British school of WWII radio controls 
> that
> was unfortunately also copied for the SCR-522 (BC-602-B) and early VHF 
> AN/ARC-5
> (C-30/ARC-5).  Somewhat more common, much better designed, and much 
> cheaper
> to make, is the control panel C-404A/A for the AN/ARC-3.  It has an 
> integral
> volume control, but no audio jacks for mic and headphones.  (Those were in
> the interphone system.)
>
> For a AN/ARC-3 complete installation, you'll need:
> AN-104-B antenna,
> C-404A/A control panel,
> CR-1A/AR crystals (16),
> DY-21/ARC-3 transmitter dynamotor,
> DY-22/ARC-3 receiver dynamotor,
> J-68/ARC-3 power junction box,
> MT-236, -237, and -238/ARC-3 shock mountings for the J-68, R-77, and T-67,
> R-77/ARC-3 receiver,
> T-67/ARC-3 transmitter,
> PL-148-A (1), PL-151-A (1), PL-153-A (2), PL-259 (4), U-15/U (2), and
> U-16/U (1) connectors, plus audio jacks.
> RG-8/U coax cable.

What I seem to have acquired comprises -

DY-21/ARC-3 transmitter dynamotor,
DY-22/ARC-3 receiver dynamotor,
J-68/ARC-3 power junction box,
MT-236, -237, and -238/ARC-3 shock mountings for the J-68, R-77, and T-67,
R-77/ARC-3 receiver,
T-67/ARC-3 transmitter

Unfortunately on inspection the Tx has been quite severely 'got at' with 
many parts missing or rewired. However the Rx and power units look to be 
OK..............

> For downloading, there's a site in the UK that has both the
> operating and maintenance instructions.  Click on the one(s)
> you wish and instructions will appear telling how to get a free
> password for the download.  I've never used this service, but
> I understand that the instructions must be followed exactly to
> make the process work.  I also don't know the quality of the scans.
>
> http://www.royalsignals.org.uk/american.html

This is usually my first 'port of call', but for some silly reason I failed 
to spot that the ARC-3 was listed. You are correct that the instructions 
must be followed exactly, but it is a very useful resource.

Very many thanks,

Andy M0FYA