[R-390] Airborne R390 on ebay

[jwkoest]

Is this radio as desirable as an r392?What is the tuning range.Does it require 400 cycle power?Thanks,Jie/W4NSA Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Barry <n4buq at knology.net> Date: 8/20/25  13:26  (GMT-06:00) To: Robert Meadows <rpmeadow at bellsouth.net> Cc: R-390 Mailing List <r-390 at mailman.qth.net> Subject: Re: [R-390] Airborne R390 on ebay "... 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>> >> >> >> >> >> >> >> >> ______________________________________________________________>> R-390 mailing list>> Home: http://mailman.qth.net/mailman/listinfo/r-390>> Help: http://mailman.qth.net/mmfaq.htm>> Post: mailto:R-390 at 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 at 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 at 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 listHome: http://mailman.qth.net/mailman/listinfo/r-390Help: http://mailman.qth.net/mmfaq.htmPost: mailto:R-390 at mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html