[Milsurplus] LM calibration book...make your own...
Clarence M. Owens
[email protected]
Wed, 17 Dec 2003 08:14:54 -0500
Hi All,
The programs and their documentation are available for download at:
http://www.mines.uidaho.edu/ftp/pub/Glowbugs/Programs/
Just download the three files with bc-221 in their names.
I have not tried them but although my two BC-221s have their books my LM
does not, so I may have a go at making a book for the LM.
I recall scrapping a very corroded BC-221 that was left behind at a
hamfest. Seems to me I found a spare manual in a metal container inside
that metal cased unit. Was that typical?
73, Clare N2RJB
"Kenneth G. Gordon"
<[email protected]>
Sent by:
milsurplus-admin@mail
man.qth.net To: [email protected]
cc:
12/16/2003 07:35 PM
Subject: Re: [Milsurplus] LM calibration book...make your own...
Caterpillar: Confidential Green Retain Until: 01/15/2004
Retention Category: G90 -
Information and Reports
On 16 Dec 2003 at 14:53, [email protected] wrote:
>
> In a message dated 12/16/03 11:07:09 AM, [email protected]
> writes:
>
>
> > Does anyone know of a source of calibration books for the LM
> > frequency meter?
Bob Keys, NA4G and Russ Schroeder W2DYY in 1996 wrote a
special program to print calibration books for both the LM and
BC-221 meters. Bob says that the calibration books written by
their program won't be as accurate as the originals, being 0.5
Khz off at the ends of the range in the HF range, and 50 cycles
at the ends of the range in the LF range, but they should suffice
for most purposes. The reason for the inaccuracy is the non-
linearity of the BC-221/LM tuning capacitor.
If anyone wants this set of programs, I will make a ZIP file of
them and e-mail it to those who want it. I am sure that they
won't go via the list.
Bob and Russ made these programs public domain quite some
time ago.
Ken Gordon W7EKB
_______________________________________________
Milsurplus mailing list
[email protected]
http://mailman.qth.net/mailman/listinfo/milsurplus