[R-390] Airborne R390 on ebay

[Barry]

"... does make NOTE of the fact..."

I'm getting so bad at that sort of thing in my emails.

Barry - N4BUQ

> To his credit, the seller does make not of the fact that, indeed, it is not a
> flying R390 and states the reason he listed with that in the title.
> 
> 73,
> Barry - N4BUQ
> 
>> 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 at 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
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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