[Boatanchors] [ARC5] Unusual BC-221

George Babits gbabits at custertel.net
Wed Mar 4 08:37:56 EST 2015


Over the years I've had over a dozen BC-221/LM frequency meters.  All were 
still accurate.  Some of the crystals for the calibrator have been bad, but 
other than that, they all still worked just fine.  They are also very 
stable.  The calibration book should always have the same serial number as 
the SN of the frequency meter or things won't be quite the same.

That's the first rack mounted one I've ever seen.  If it is "homebrewed" it 
was a heck of a good job.


----- Original Message ----- 
From: "Fuqua, Bill L" <wlfuqu00 at uky.edu>
To: "Dave Hollander" <n7rk at cox.net>; <milsurplus at mailman.qth.net>; 
"BOATANCHORS" <boatanchors at mailman.qth.net>; <Boatanchors at puck.nether.net>; 
"Old Tube Radios" <boatanchors at theporch.com>; <ARC5 at mailman.qth.net>
Sent: Wednesday, March 04, 2015 12:35 AM
Subject: Re: [Boatanchors] [ARC5] Unusual BC-221

>  Now, I have a question. There is an experiment I always wanted to try if 
> I ever found a still boxed Bc221 or LM.
> Is it still accurate? Can you check it WWV perhaps or a well calibrated 
> crystal calibrator to see if it still agrees with the book?
> First, how close is the crystal calibrator before making any adjustments 
> to it, and then after setting the crystal calibrator
> how closely does the book match. I had always been amazed by the precision 
> of many instruments made during WWII.
> 73
> Bill wa4lav
> ________________________________________
> From: ARC5 [arc5-bounces at mailman.qth.net] on behalf of Dave Hollander 
> [n7rk at cox.net]
> Sent: Tuesday, March 03, 2015 7:30 PM
> To: milsurplus at mailman.qth.net; BOATANCHORS; Boatanchors at puck.nether.net; 
> Old Tube Radios; ARC5 at mailman.qth.net
> Subject: [ARC5] Unusual BC-221
> This unusual BC-221 followed me home from a hamfest a few years ago. The
> guy practically begged me to take it.
> I just got it out of storage a few days ago.
> I have never seen one like this and don't find any model numbers on it.
> I did have it on the bench and it works.
> Attached are some pictures.
> http://n7rk.com/radiostuff9/bc221unusual.jpg
> http://n7rk.com/radiostuff9/bc221unusual2.jpg
> http://n7rk.com/radiostuff9/bc221unusual3.jpg
> http://n7rk.com/radiostuff9/bc221unusual4.jpg
> http://n7rk.com/radiostuff9/bc221unusual6.jpg
> http://n7rk.com/radiostuff9/bc221unusual7.jpg
> Anyone seen one like this? Comments?
> Tnx and 73,
> Dave N7RK
> --
> ***********************************************************
> Dave  N7RK          Boatanchors Home Page: http://n7rk.com
> Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#22 - 75 Meter SSB*
> Boatanchor and Antique Radio Collector
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