[ARC5] BC-221 or LM Freq meter

Tue Nov 9 20:17:05 EST 2010

All -
I like the 221's and LM's they are fun to fix.
Ok I have a BC-221-AK that I have re-capped and re-resistored;   The 
Upper band matched the book after following the tune up instructions 
were followed to the T.   The lower band does not, scrunched in a bit.  
Do not know why;? It could be due in part to the crack in the wax 
covering in the low band coil  which I resealed after a long dry-out.

I have both the program and Xcel;  the program I found not to be as 
accurate as Xcel data.  I also made the effort to check, and mark, and 
document all the check points for Xcel.  Getting an equation for a line 
the passes through all the crystal check points is difficult to say the 
least;  I have lost my math skills.  Any how using an Xcell spread sheet 
proved to  be more accurate across the range of the low band than the 
old fortan program.

That being said one of the LM's I have has all the entries in pen!  Holy 
cow.

I recommend the Xcel approach.
If not crack the old knuckles and fire up the Fortran compiler!  The 
program may be convertd to C by now?

I also have the Fortran source.

-Hutch

On 11/9/2010 4:31 PM, Richard Solomon wrote:
> Find someone who has a GPSDO for a reference oscillator on his frequency
> counter. Then dial, read, write. Make an Excel spreadsheet.
>
> Simple.
>
> 73, Dick, W1KSZ
>
> -----Original Message-----
> From: arc5-bounces at mailman.qth.net
> [mailto:arc5-bounces at mailman.qth.net]On Behalf Of wctaylor at juno.com
> Sent: Tuesday, November 09, 2010 10:35 AM
> To: arc5 at mailman.qth.net
> Subject: Re: [ARC5] BC-221 or LM Freq meter
>
>
> You're most welcome. I took my last 221 and turned it into a TS-164 by
> putting it in a different case so I could display it with an ART-13 and
> BC-348 at our airshow here in Midland, Texas.
>
> Bill
> KD4LXC
>
>
>
>
> On Tue, 9 Nov 2010 18:22:32 +0100 "Henry Mei'l's"<meils at get2net.dk>
> writes:
>> Thank you Bill.
>>
>> Terry, N3GTE also sent me the same link on this list -
>> but better two than none ;0). I also have BC-221-T in its
>> original case and a BC-221-AH in a HB aluminimum cabinet.
>> Both have their calibaration books and work OK though
>> the original xtal in the -AH was defunct --I replaced it.
>> I never intended to have three WWII frequency meters!
>> But I did have an LM- years ago and am happy to
>> have one again.
>> Thanks again for taking the trouble-
>> that also goes for all those who
>> have assisted me on this.
>>
>> 73, Heny OZ1UF-OU5T / N2NR
>>
>>
>> ----- Original Message -----
>> From:<wctaylor at juno.com>
>> To:<ARC5 at mailman.qth.net>
>> Sent: Tuesday, November 09, 2010 5:50 PM
>> Subject: [ARC5] BC-221or LM Freq meter
>>
>>
>>> Here is link to a site that has programs for generating a
>> calibration
>>> book. I found it a while back when I was looking for info on some
>> 221's I
>>> picked up that didn't have their cal books. But, before I could
>> try these
>>> programs I got a 221 in very good condition with it's calibration
>> book.
>>> Good luck and 73,
>>> Bill
>>> KD4LXC
>>>
>>> http://www.mines.uidaho.edu/~glowbugs/BC221pages.html
>>> ____________________________________________________________
>>> &#34Six Sigma&#34 Certification
>>> Enroll in Villanova University&#39s prestigious six sigma
>> certification
>>> program&#45 100% Online
>>>
>> http://thirdpartyoffers.juno.com/TGL3141/4cd97c16eaf9d147ad2st05vuc
>>> ______________________________________________________________
>>> ARC5 mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/arc5
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:ARC5 at mailman.qth.net
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list:
>> http://www.qsl.net/donate.html
>>
>>
>> -----------
>>
>>
>>
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com
>> Version: 9.0.864 / Virus Database: 271.1.1/3246 - Release Date:
>> 11/09/10
>> 08:34:00
>>
>> ______________________________________________________________
>> ARC5 mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/arc5
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:ARC5 at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
> ____________________________________________________________
> &#34Six Sigma&#34 Certification
> Enroll in Villanova University&#39s prestigious six sigma certification
> program&#45 100% Online
> http://thirdpartyoffers.juno.com/TGL3141/4cd986963e3de1ec1fest01vuc
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>