Well, Here we go again. The R648/ARR41 IS NOT A FLYING R390. Many think that
simply because of the dial which looks like the R390 digital dialThe Radio, ARR
41 was designed and built on a US NAVY Contract for the early P3 Aircraft. It
was retrofitted in the P2 as well.Originally intended to be the additional
receiver for HF reception of primarily Radito Teletype which was the primary HF
communication methodfor about the entire life of the P3 Orion. Navy MPA
(Maritime Patrol) folks decided that the pair of ARC 94/xx/xx, civilian Collins
618T HF transceivers were sufficient for the job and as the P3A "grew"
(actually did as the initial P3 was a shortened Lockheed commercial turboprop,
by some 88 inches,the R-648 radios were removed, with some going into various
aircraft.
I have all the manuals, references, as well as the only existing complete copy
of the Depot Level Servicing and Maintenance,ANd,About a dozen of the radios,
new and as removed racks.
In addition to that little treasure trove, I have R648/ARR41 Serial Number X1.
A prototype with Collins built internal 120VAC power supply insteadof the
standard 28VDC dynamotor, and there are traces of USB/LSB at the AM/CW/CW Sharp
switch positions.
Last time I looked on the federal stock listings, the radio was still listed as
active and procurable for something like (here goes memory) $18,000 with a
DEMILCode of D, which means that none may be surplused without total
destruction. That was changed after the batch I have were sold.
I will provide radios that are as removed for $800, Racks are around
$300.Serviced radios to the Specifications are more.
Cheers AllRobert W4RRDOrange Park, FL
On Wednesday, August 20, 2025 at 12:50:30 PM EDT, Perry Sandeen via R-390
<r-390@mailman.qth.net> wrote:
List,
FWIW
Military Aircraft Radio r-648/arr-41 Receiver Collins WORKING R-390 Arr-41
US $795.00 Located in: Smyrna, Delaware, United States
eBay item number:116704917477.
This is very rare. First one I've seen on ebay for many years.
Perry KM6FQV
______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
