[Milsurplus] Fw: ARC 3 / T 67 questions

[Jim Whartenby]

When I was in USAF in 1969,  I was a 30434 Ground Radio Maintenance technician at Mactan AB, RPI.   AFCS (Air Force Communications Service) had operational and maintenance  responsibility  for an MPN-13 GCA radar van which used ARC-3s for VHF and ARC-27s for UHF communication with aircraft using the base. The VHF radios were used for instructing Philippine Air Force aircraft while US and some PAF aircraft used UHF exclusively.  When I went to Germany in 1970, and was by that time a "5 level" (30454), there was another MPN-13 radar but VHF was never used there to my knowledge.

The ARC-3s worked well and had a much lower failure rate then the ARC-27s in part I think to running cooler due to a lower tube count and less dense packaging.  In fact I don't remember ever replacing an ARC-3 on my watch.  I realize that the UHF radios were used much more then the VHF sets but all were running 24/7 in the PI. 

I always thought it strange that 304s maintain aircraft radios when we had an avionics shop on base.    
Jim



----- Original Message ----
From: Mike Morrow <kk5f at earthlink.net>
To: Greg Mijal <bluebirdtele at embarqmail.com>; milsurplus at mailman.qth.net
Sent: Thu, March 4, 2010 3:22:44 PM
Subject: Re: [Milsurplus] ARC 3 / T 67 questions

Greg wrote:

>Can anyone tell me what planes used the ARC 3 - T 67 
>transmitter?  Also, what is the frequency range?

The USAAF AN/ARC-3, just like the SCR-522-A that it replaced,
the USN VHF AN/ARC-5, and the USN AN/ARC-1 were all 100 to 156
MHZ, as has been pointed out already.

The 8-channel AN/ARC-3 was a USAAF/USAF set that was used in
some form or another for a couple of decades after WWII.  There
was a 16-channel version called the AN/ARC-36, and a 48-channel
version called the AN/ARC-49.

It was used on practically every type of USAF aircraft very late
WWII through to the late 1950s, and some places later.  It was
**THE** USAF VHF-AM command set until the AN/ARC-73 came into
service in the early 1960s.

About the only place it would be wrong to see an AN/ARC-3/36/49
set would be in a USN aircraft.

Mike / KK5F
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