[Milsurplus] [ARC5] BC-348 wreck for sale or parts

[Jim Whartenby]

I also have a BC-348 that was also modified for double conversion.  It uses a 1mc crystal for the second oscillator to generate the 85kc IF.  IIRC, there are three 85kc IFTs.
Does anyone know which ham magazine, month and year that had the conversion article?Jim

Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy

-----Original Message-----
From: Hubert Miller <Kargo_cult at msn.com>
To: arc5 at mailman.qth.net <arc5 at mailman.qth.net>; milsurplus at mailman.qth.net <milsurplus at mailman.qth.net>
Sent: Mon, Dec 5, 2022 2:14 pm
Subject: Re: [Milsurplus] [ARC5] BC-348 wreck for sale or parts

 <!--#yiv8733370733 filtered {}#yiv8733370733 filtered {}#yiv8733370733 filtered {}#yiv8733370733 p.yiv8733370733MsoNormal, #yiv8733370733 li.yiv8733370733MsoNormal, #yiv8733370733 div.yiv8733370733MsoNormal {margin:0in;font-size:11.0pt;font-family:"Calibri", sans-serif;}#yiv8733370733 span.yiv8733370733EmailStyle20 {font-family:"Calibri", sans-serif;color:windowtext;font-weight:normal;font-style:normal;}#yiv8733370733 .yiv8733370733MsoChpDefault {font-size:10.0pt;}#yiv8733370733 filtered {}#yiv8733370733 div.yiv8733370733WordSection1 {}-->   > the doo dad occupying the dynamotor space?..hmmm
Curiouser and curiouser..
kn7sfz That looks like a double conversion IF. The IF cans are 85 kHz from the LF Command Receiver. I assume the extra can wedged in there is 915 kHz and one tube is the converter 915:85 I thought of doing this, some years back, and then thought, nah, live with it as is. One trivia type item: the Squires Sanders SS-IBS and SS-1R have their IF at 1000 kHz. But they get the AM selectivity only thru LC’s at this frequency. The coils in the S.S. receiver are much higher Q than the ones in the BC-348, which are Q about 100+. -Hue Miller    

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