[R-390] Collins ARR-41/R-648 HELP????

[Meir WF2U]

Glenn,

The ARR-41/R-648 was NOT the replacement for the BC-348. It was contracted and purposed as the auxiliary tuneable receiver to accompany the digitally step tuned transceivers which replaced the AN/ARC-8 systems (ART-13 transmitter/BC-348 receiver), such as the ARC-65 and ARC-94 on military aircraft.

73, Meir WF2U 
Landrum, SC


On December 12, 2015 5:22:16 PM EST, Glenn Scott via R-390 <r-390 at mailman.qth.net> wrote:
>
>Hi Group,
>
>
>I have followed this list for a number of years and have heard little
>mention of the R-648 receiver. There is a R-648 list but I hear almost
>no discussion there either.
>Not sure how many 648's were built but I own one and have repaired
>several others for clients. It's actually a pretty decent receiver also
>built by Collins as an COLLINS ARR-41/R-648 RECEIVER. I see them on
>epay from time to time and they generally sell for somewhere between
>$350 for fair examples, operation UNKNOWN to well over $900 for good
>examples promised to WORK!
>
>
>It covers 190 – 550 Kc and 2 – 25 Mc skipping the AM broadcast band and
>was designed for aircraft utility with an aluminum frame to reduce
>weight. It uses a similar counter display used on the 390, 390A's
>Veeder counter, and others but a little different. 
>
>
>Scroll down this page for a pic.
>http://www.mrca.ar88.net/photo_gallery/2002_meet_pix/meet_pix.html
>
>
>I believe all of these were built with dynamotor supplies but many were
>converted to DC operation once Hams started to get them from the
>surplus market.
>
>
>My understanding is the R648 was to replace the aging BC 348's but
>still being a tube unit when Solid State receivers were becoming more
>readily available. the R648 was a day late and probably MANY dollars
>short.
>
>
>I am sure this is a NON-OFF TOPIC receiver question/discussion but was
>wondering if there are others who also use this receiver? As the TV
>commercial from the 80's, I think, said, "TRY IT YOU MIGHT LIKE IT."
>
>
>Anyone have an idea on how many were built? Any additional historical
>info will be GREATLY appreciated. I had asked the group about 2 years
>ago if there was interest in manuals since I have an EXCELLENT copy
>with legible schematics and supplemental notes but only heard back form
>4 or 5 people; not enough to justify the cost of having a batch
>printed.
>Again, any HISTORICAL info will be GREATLY appreciated.
>
>
>73,
>Glenn WA4AOS
>DSM Labs
>www.dsmlabs.com
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