[Milsurplus] R-648

[John Page]

Thanks to all that responded with info. I had never seen one before. This 
one does have the dynomotor, Looks like an interesting piece of gear. John
John Page K4KWM
Hollow State since 1953
(ex W8PKU,N8BLB,NA8O)




>From: "Mike Morrow" <kk5f at earthlink.net>
>To: "John Page" <k4kwm at hotmail.com>, <milsurplus at mailman.qth.net>
>Subject: Re: [Milsurplus] R-648
>Date: Sat, 1 Oct 2005 15:13:02 -0500
>
>John asked:
>
>
> >Guys, what is an R-648. Saw one today on "that other place". It looks 
>like
>a
> >mini R-390...
>
>The R-648/ARR-41 was made by Collins, but I don't know of any module or
>major assembly in the R-648/ARR-41 that is interchangable with one in the
>R-390, -390A, or -392 receivers.  The similarity is coincidental and
>cosmetic.
>
>The R-648/ARR-41 is the auxilary HF receiver that was normally installed
>with the US Navy's AN/ARC-38 HF AM/CW receiver-transmitter (also made by
>Collins) in larger aircraft.  The AN/ARC-38 was the USN's mid-1950s
>replacement for their earlier AN/ARC-25 HF set (combo of the T-47/ART-13 
>and
>the R-105/ARR-15).  The frequency coverage and modes of operation of the
>AN/ARR-41 are identical to that of the AN/ARC-38 (2 to 25 mc), plus the
>AN/ARR-41 covers the LF/MF beacon band.  Anyone re-creating an AN/ARC-38 
>set
>should include the AN/ARR-41 with it as a matter of course.
>
>Don't believe the common ham operator BS stating that the R-648/ARR-41 was 
>a
>replacement for the USAF's BC-348 for use with the T-47A/ART-13.  It 
>wasn't.
>There's at least one ham's ARR-41 web page that persists in putting out 
>that
>nonsense long after that ham was shown otherwise.  The USAF did not use the
>AN/ARC-38 or AN/ARR-41 except in the few aircraft they got from the USN 
>that
>already had them installed, and there's absolutely no documentation of the
>military ever pairing an AN/ARR-41 with an AN/ART-13.
>
>73,
>Mike / KK5F
>
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