Bill,
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.
73,
George
W7HDL
----- Original Message -----
From: "Fuqua, Bill L" <[email protected]>
To: "Dave Hollander" <[email protected]>; <[email protected]>;
"BOATANCHORS" <[email protected]>; <[email protected]>;
"Old Tube Radios" <[email protected]>; <[email protected]>
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 [[email protected]] on behalf of Dave Hollander
[[email protected]]
Sent: Tuesday, March 03, 2015 7:30 PM
To: [email protected]; BOATANCHORS; [email protected];
Old Tube Radios; [email protected]
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*
ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX
Boatanchor and Antique Radio Collector
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