[Milsurplus] BC-348 series CORRECTION

[James Whartenby]

I don't think so....  
The photo of the FP-298 does not show four captive mounting screws like that which is seem in various photos of BC-348 dynamotor mounting plates.  Also the PF-298 is a flat plate with one simple stiffening bend while the dynamotor plates are stamp formed.  I don't see evidence of extra holes in the PF-298 plate.  It was not re-purposed but built from scratch for the government, IMHO.
Perhaps the reason for an AC power supply for the BC-348 is that this receiver was available and was good enough to perform the job at hand.  All of the other receivers that were previously mentioned would cost much more to either purchase or transfer from another location or agency then the cost of the retrofit AC power supply.  The FP-298 is just a cost effective solution to a particular problem.
As for the FP-298 being a Navy program, I'm not so sure.  The Navy had it's own HF radios and the BC-224 / BC-348 were Signal Corps designs.  So this sort of bucks the Navy trend on equipment, as I understand it.  Besides, Government Source Inspectors can accept items for any government agency but they use the same rubber stamp for all.Jim

      From: WA5CAB--- via Milsurplus <milsurplus at mailman.qth.net>
 To: milsurplus at mailman.qth.net 
 Sent: Tuesday, June 27, 2017 11:19 AM
 Subject: Re: [Milsurplus] BC-348 series CORRECTION
   
The Hallicrafters EP-298 was built using surplus parts for the surplus market after the War.  It was built on salvaged DM-24 and DM-28 base plates, also using the salvaged original terminal strip.  The rest of the components were also surplus and sometimes have various military QA stamps on them.  The Navy did have some BC-348's later in the War.  Mostly in US AAF aircraft transferred to the Navy, like the B-24 and B-25.  The Navy acceptance stamp would have been on the DM-28 from one of those transactions.  Hallicrafters didn't waste any time or money removing any such markings.  I have also seen EP-298's with the typical orange Signal Corps (or AAF) QA stamps on the bottom of the mounting plate, sometimes with part of the stamp cut away.

After the War, the Navy, like the Army and from 1948 the Air Force, had plenty of AC operated radio receivers already on hand that were being surplus'd out by the thousands.  And if they hadn't, they had plenty of aircraft receivers already on hand that they would have converted instead of getting into the inter-service hassle of trying to obtain sets from the Army to convert.

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 06/27/2017 09:25:10 AM Central Daylight Time, antqradio at sbcglobal.net writes: 

Ray
 Can't speculate on why the Navy or any other service would need AC power for the BC-348 but I easily found a photo and schematic of a Hallicrafters made power supply at: http://www.ohio.edu/people/postr/bapix/BC348Q_3.htm


Jim



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