[Milsurplus] BC-348 Marine Radio

[Hubert Miller]

The receiver to the left is Philips ( Nederlands ) BX-925A. A summary description in English is at
http://www.armyradio.ch/radio-e/e-635-e.htm
More extensive description, in Dutch, at
https://www.pa3esy.nl/Philips/ontvangers/BX925A/html/BX925A_set.html
I am wondering now if I have the manual somewhere. I see BAMA is given as having the manual.
The receiver weighs 32 kg and is AC powered from 110 to 245 VAC. As the shortwave range to 32 MHz is in 5 bands
versus the BC-348's range to only 18 MHz in 5 bands, you can see that the BC-348 potentially has somewhat better
resolution, and that seems to be the case from the photos. This may apply to early BC-348s, I don't recall the letters,
that have more dial markings. More dial markings do not necessarily mean more accurate markings. It seems from
the Dutch that the BX-925A has 3 crystals in an IF filter at 735 kHz. So better selectivity. This receiver uses miniature
glass tubes 6BA6 et al and also has motor driven tuning drive for large frequency changes. Much more expensive than
the BC-348. 'Radio museum' https://www.radiomuseum.org/r/philips_bx925a.html
says 1952-53 so yes, newer design than BC-348 which originated 1936 but still not radically different not dual conversion
design.
The BC-348 in its original configuration was DC so possibly would make an 'emergency receiver'  and possibly easier
to just use than the BX.
Box below the BC-348 ? Looks like audio amp. Terminal for ship intercom, or ??

Somewhere I have an around 1948 copy of a U.K. radio mag with a photo of radio room of an Australian merchant
vessel. The receivers are a BC-348, unmodified apparently, and an 'Australian HRO', Kingsley KCR-7.
Thanks for the photo lead ! I like to see these !
-Hue

From: milsurplus-bounces at mailman.qth.net <milsurplus-bounces at mailman.qth.net> On Behalf Of Tom Brent
Sent: Thursday, March 22, 2018 7:06 PM
To: milsurplus at mailman.qth.net
Subject: [Milsurplus] BC-348 Marine Radio

While doing a Google search for something this evening I came across a photo of a BC-348 receiver installed in the radio shack on the freighter "Madison Lloyd", launched in 1962. Over the years there has been frequent discussion on this list regarding airborne direction finders converted for marine use, usually on fishing boats and other coastal craft. In this instance, the BC-348 is installed on a seagoing freighter in a radio shack with plenty of modern (for the day) equipment. The BC-348 has obviously been reworked a bit (repainted and knobs changed) but it still seems odd that it was being installed along with modern equipment 20+ years after it was designed.
Here's a link to the photo:  https://www.flickr.com/photos/33402600@N02/8568021523/in/album-72157633026069092/<https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.flickr.com%2Fphotos%2F33402600%40N02%2F8568021523%2Fin%2Falbum-72157633026069092%2F&data=02%7C01%7C%7C35535037ff134eb20b2308d59062ab0f%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636573675803332337&sdata=AwZLfkcEtAa4I8E97p4K52ftxxDabBOuv8F8BN7iwHU%3D&reserved=0>
Any comments? Any other instances of this?
Stay tuned.
Tom
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