[ARC5] History of Ham Mods: Opinions?

[Robert Caponi]

Hello All,
I'm new to the group and am currently building up the entire SCR-274N Set up.
before I decided to undertake this task, I got hooked on the set when a good friend of mine
gave me an ARA type CBY-46105 reciever almost 9 years ago. I did not have any connectors or racks
and did not want to solder to the rear power connector.
I did use the miniature banana plugs that were made by Keystone Electronics. and it worked great!
I first used a pencil and paper and rubbed over the outline of the rear connector creating an image of it.
Next, I taped the piece of paper to a 1/4  inch thick piece of lexan and drilled the center of each hole
enough so that the banana plug and sleeve could be press fit in. Wires were soldered to the banana plugs and
inserted into the lexan. At the other end of the wires I used a terminal strip  mounted on a board which allowed me to add gain, volume, and 
a connection to a LS-454 speaker obtained from Fair Radio. I later added panel meters to monitor Heater and B+
voltages.
Hope this is of interest to some.
73,
Rob KB1PZM> Date: Mon, 29 Dec 2008 23:00:52 -0800> To: arc5 at mailman.qth.net> From: hro5-2 at cox.net> Subject: Re: [ARC5] History of Ham Mods: Opinions?> CC: > > I was thinking of Dave Stinson's articles and emails when I said > common sense mods - that info should be included > (see > http://www.mines.uidaho.edu/~glowbugs/DaveStinsonARC-5Article.pdf . > There is one topic that should be added - how do you connect the > power connector? Racks are difficult and expensive to find. Someone > told me to just solder to the connector. The solder could be removed > should a rack be found. I like Brad Hernlin's mini-banana plug pins, > but you would need to check with him to see if they will be available > on a long-term basis.> > I'll keep an eye out for the converted BC-453 and let you know if I > decide to dispose of it.> > My first rigs were command transmitters. I was in college when I > got my license in 1949 or 1950. I joined the radio club in the men's > dorm (W9CLY). They had a Meissner 150B, if I remember > correctly. The person who kept it running flunked out, and none of > the other members knew how to keep it running. I certainly didn't; > all my knowledge could be found in the ARRL license manual. They > sold it and used the funds to buy a WRL Globe King, a crystal > controlled 6L6-807 transmitter. I wanted a VFO rig, so bought a > BC-459 and used the Globe King as the power supply. Almost everybody > running low power used a command transmitter.> > Jim> > At 02:13 AM 12/29/2008, you wrote:> >On Sun, Dec 28, 2008 at 9:08 PM, Jim Hill <hro5-2 at cox.net> wrote:> >> > > If you have the time and space, I think it would be an > > interesting addition.> >> >In my "new and improved" book on A.R.C., I'm planning just that, much> >to the horror and dismay of many. Okay, a few. Actually, only one> >really outspoken opponent. Among the equipment to be set up for> >photographs and description will be a couple of "typical 50s-60s> >Command set conversion" rigs using different approaches.> >> > > For example, there was the conversion of the BC-453 to an 80 meter SSB> > > transceiver, possibly written by Ed Mariner. I still have the > > unfinished rig and book> > > somewhere.> >> >If you happen to find them and need the space, I know a willing> >recipient who'd love to finish it. :-)> >> > > Avoid inappropriate modifications by including a section with common-sense> > > "mods" to get the equipment on the air.> >> >The best "mod" is pretty much none at all by following David's advice> >on getting them on the air. After perverting a few 'back when, I> >wound up with the same conclusion after talking with a few AAF radio> >types who were pretty insistent I leave them alone and use them as> >built. Most (but not all) of the ones I have now are converted but I> >should be able to get them back to something vaguely resembling> >original condition without a lot of Really Bad Words. If I'm lucky> >and use those Really Bad Words just right. :-)> >> >BEst regards,> >> >Michael, WH7HG> >_______________________________________________> >ARC5 mailing list> >ARC5 at mailman.qth.net> >http://mailman.qth.net/mailman/listinfo/arc5> > _______________________________________________> ARC5 mailing list> ARC5 at mailman.qth.net> http://mailman.qth.net/mailman/listinfo/arc5
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