[ARC5] LM/BC-221 Freq Meter Count
Fuqua, Bill L
wlfuqu00 at uky.edu
Mon Oct 17 00:11:49 EDT 2011
I can see why someone may want to use a 221 for a QRP rig since these were so stable.
However, I would certainly prefer a junker for the project. One that could not be put back
into service.
I found some DX20,35s and 40s at Dayton that had been stripped of power supply
transformers, chokes, meters and tubes. Not much left except the coils, band switches and
capacitors. I showed my students how to make them useful again with a simple solid state
oscillator and power mosfet. And with 12 volt power supply got around 10 watts out.
Would never thought of do that with one that could have been restored. But there were
too few parts left. A couple did have dented up cases.
I liked the info on the 24 volt operation of the ARC-5 sets. In this way they could still be put
to good use with out being modified. You could even go to 6 volt tubes and run them off 12 VDC and
use rechargable batteries for the 24 volt B+. How much B+ current did they draw at 24 Volts?
73
Bill wa4lav
________________________________________
From: arc5-bounces at mailman.qth.net [arc5-bounces at mailman.qth.net] On Behalf Of Tom Bridgers [tarheel6 at msn.com]
Sent: Sunday, October 16, 2011 8:13 PM
To: ARC 5 list ARC5
Subject: [ARC5] LM/BC-221 Freq Meter Count
I have about 10 LM's and an equal number of BC-221's.
As someone said earlier, with one exception, all of my Freq Meters areeasily calibrated to be on target with the frequency book.
I have several LM's with no book, but I have a copy of a program writtenby BA Bob, AKA a professor at NC State Univ, that will create a freqbook. I haven't actually used it, because as another list membersaid, I've found using an Excel spreadsheet easier.
In terms of use, I have 2 LM's in my shop, and I use them from timeto time.Best,-Tom KE4RHH
> From: arc5-request at mailman.qth.net
> Subject: ARC5 Digest, Vol 93, Issue 45
> To: arc5 at mailman.qth.net
> Date: Sun, 16 Oct 2011 19:20:07 -0400
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> 1. Re: [Milsurplus] Article in Nov. QST (MillerKE6F at aol.com)
> 2. Re: [Milsurplus] Article in Nov. QST (J. Forster)
> 3. Re: [Milsurplus] Article in Nov. QST (WA5CAB at cs.com)
> 4. Re: [Milsurplus] Article in Nov. QST (Kenneth G. Gordon)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 16 Oct 2011 18:55:50 -0400 (EDT)
> From: MillerKE6F at aol.com
> Subject: Re: [ARC5] [Milsurplus] Article in Nov. QST
> To: wf2u at ws19ops.com, ARC5 at mailman.qth.net, Milsurplus at mailman.qth.net
> Message-ID: <262ac.62f6f3a5.3bccbaf5 at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> I've been buying and rescuing these critters for over 50 years and during
> the past 10 years or so I kind of set my max price at around 10 bux or so if
> they look like they might work. Oddly, I've see very few of the LM or
> BC221s that have been modified or taken apart or repurposed to use the new
> touchy feely verb.
>
> BUT it's a shame to see these unit just sitting on the shelves
> gathering dust. As one who actually used the BC 221 in the active Army I must say
> that while they worked quite well, they pretty much fell out of favor
> when we got the AN/GRC-19s to replace our AN/GRC-9s. And as an Army operator
> I didn't miss the BC-221 or the AN/GRC-9 with all the fiddle farting one
> had to do to get on frequency. (This was in 1958-58 by the way).
>
> So what's a good use for the things since so many were made over the
> years and seem to be everywhere based on swap meets and other ham radio
> venues? I think it's quite a good thing to convert (notice I don't say
> hacked) these unit into something that's useful and fun to play with. Those
> without calibration books are great candidates for conversions since not many
> folks are going to take the time to build a new book (I've done that and
> while it's not technically difficult, it's sure tedious). Why not make a
> nice HF vfo or a Regen Receiver or small transmitter in the nifty enclosure
> and use that cool variable cap and dial system that's soooo smooooothe.
>
> What I'd really like to know is how many in these august groups
> actually have an LM or BC-221 in their shop or shack and do they actually use
> them for anything? I do use a few of mine just to stay on top of the clever
> if not tedious interpolation process. So how about it folks. Lets get a
> tally on those who both love 'em and use 'em
>
>
> 73 Bob, KE6F
>
> ------------------------------
>
> Message: 2
> Date: Sun, 16 Oct 2011 16:08:09 -0700 (PDT)
> From: "J. Forster" <jfor at quikus.com>
> Subject: Re: [ARC5] [Milsurplus] Article in Nov. QST
> To: MillerKE6F at aol.com
> Cc: arc5 at mailman.qth.net, milsurplus at mailman.qth.net
> Message-ID:
> <1573.12.6.201.188.1318806489.squirrel at popaccts.quikus.com>
> Content-Type: text/plain;charset=iso-8859-1
>
> > I've been buying and rescuing these critters for over 50 years and during
> > the past 10 years or so I kind of set my max price at around 10 bux or so
> > if
> > they look like they might work. Oddly, I've see very few of the LM or
> > BC221s that have been modified or taken apart or repurposed to use the
> > new touchy feely verb.
>
> Have you checked the "crystal radio" folks? They love the tuning
> capacitors for their sets. They are a world unto themselves.
>
> -John
>
> ===============
>
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 16 Oct 2011 19:11:01 -0400 (EDT)
> From: WA5CAB at cs.com
> Subject: Re: [ARC5] [Milsurplus] Article in Nov. QST
> To: ARC5 at mailman.qth.net, Milsurplus at mailman.qth.net
> Message-ID: <15ed1.330e96be.3bccbe85 at cs.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> I have 66 of them that I can account for. About a third incomplete or
> hacked or both, and classified as parts units (which includes any missing the
> matching cal book). I use a pair of -AK's with RA-133-B's installed as Ken
> mentioned earlier (receiver front end tracking/alignment).
>
> I have a pre-production model (BC-221-T1) but never did find a complete
> BC-221-A. Otherwise, I have at least one of the remaining 25 models.
>
> In a message dated 10/16/2011 17:55:58 PM Central Daylight Time,
> MillerKE6F at aol.com writes:
> > What I'd really like to know is how many in these august groups
> > actually have an LM or BC-221 in their shop or shack and do they actually
> > use
> > them for anything? I do use a few of mine just to stay on top of the
> > clever
> > if not tedious interpolation process. So how about it folks. Lets get a
> >
> > tally on those who both love 'em and use 'em
> >
> >
> > 73 Bob, KE6F
> >
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
>
> ------------------------------
>
> Message: 4
> Date: Sun, 16 Oct 2011 23:20:14 -0000
> From: "Kenneth G. Gordon" <kgordon2006 at frontier.com>
> Subject: Re: [ARC5] [Milsurplus] Article in Nov. QST
> To: MillerKE6F at aol.com
> Cc: ARC-5 <arc5 at mailman.qth.net>
> Message-ID: <4E9B66AE.13588.7C225 at kgordon2006.frontier.com>
> Content-Type: text/plain; charset=US-ASCII
>
> On 16 Oct 2011 at 18:55, MillerKE6F at aol.com wrote:
>
> > What I'd really like to know is how many in these august groups
> > actually have an LM or BC-221 in their shop or shack and do they actually use
> > them for anything? I do use a few of mine just to stay on top of the clever
> > if not tedious interpolation process. So how about it folks. Lets get a
> > tally on those who both love 'em and use 'em
>
> I have two BC-221-AKs which I use for alignment of recievers.
>
> I have two LMs, which I bought for parts for $9.99/pair, but when I got them, they were
> complete although one was missing a cal book.
>
> I also have one of the **-173 VHF jobs, which works very well.
>
> So: total: 5, 2 of which are in use, two more available as standby rigs, one for parts.
>
> Ken W7EKB
>
>
> ------------------------------
>
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> End of ARC5 Digest, Vol 93, Issue 45
> ************************************
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