We are the Borg.
Rob Lister
Posts: 22701
Joined: Sun Jul 18, 2004 7:15 pm
Title: Incipient toppler
Location: Swimming in Lake Ed

Back in the '90's, I used to restore antique radios from the late '30's and early forties. I did it as a hobby in my garage, mostly to get away from the wife and kids for an hour or three in the evenings and a few more on the weekends. In total, I probably did a dozen or so and sold them at a little profit to antique stores. Here's a representive one I did first:

Not the actual pic of the one I had, but the same make and model.

Think tubes, a half dozen or so usually. Wax coated capacitors, hand-wound transformers. No circuit boards to speak of, rather just components running from point to point, usually to a pin of a tube. Beautiful wood cabinetry; varnished. So solidly built you wondered how they made a profit.

The electronics, as they were, were dead simple. No schematics were easily available (then, they are now) but an experienced eye could pretty much work it out by said eye. Getting them working again wasn't much of a chore. Mainly you just replace all the wax capacitors with something new; one just assumed they were leaky given their age. Look for any obviously burned resistors and replace as needed. Replace any tubes that weren't glowing; if it glows, it's good; very robust. Tubes were hard to get back then (they're not now), but mail-order was a thing. When you were done you could manually tune the inductors for perfect performance as they all had screw-type cores; simple but effective.

But mainly I focused on the cabinet finish. I would carefully remove the old varnish, more carefully sand and repair the surface, and refinish again with varnish; newer finishes would not do if you wanted to resell it. That took dozens of hours per unit. But it was zenful.

Back then, I thought about how cool it would be if I could modify the circuitry such that when it was turned on and tuned to any given channel, a recording of something from that era would play instead of regular AM radio. At the time, there was no way to easily accomplish that. Today, however, it would be easy. A simple and cheap Arduino computer along with some switching and a flash drive could give me 1000's of hours of playback across a dozen or so selected (but switched) channels.

It seems like a lot of work now. Maybe I need new kids to bother me into this stuff again.

The old ones barely even call now.

ed
Posts: 38424
Joined: Tue Jun 08, 2004 11:52 pm
Title: G_D

Gosh. Had a Grebe. Like the old ones.

Rob Lister
Posts: 22701
Joined: Sun Jul 18, 2004 7:15 pm
Title: Incipient toppler
Location: Swimming in Lake Ed

My wife once remarked that I could turn a $100 antique into a$25 antique in a span of less than a month. I think she was overcritical.

Anaxagoras
Posts: 27352
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

I remember I had an antique radio once. I can't remember if we got it at a garage sale or what. Gigantic cabinet. But it was just a radio after all. Did not include a record player.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare

sparks
Posts: 16585
Joined: Fri Oct 26, 2007 4:13 pm
Location: Friar McWallclocks Bar -- Where time stands still while you lean over!

Rob: In the photo you attached, the turntable doesn't really match the vintage of the rest of the piece.

(Does it?)
You can lead them to knowledge, but you can't make them think.

Witness
Posts: 28414
Joined: Thu Sep 19, 2013 5:50 pm

Rob Lister wrote:
Thu Dec 05, 2019 3:43 pm
Tubes were hard to get back then (they're not now)
I see there are enormous catalogs online, so yes, but I also read (a long time ago) that now most are cheap and crappy Chinese copies.

As a kid I had a small radio building set with a battery powered triode. It was fascinating to listen to all these mysterious stations blathering in unknown languages. Plus Morse code.

Rob Lister
Posts: 22701
Joined: Sun Jul 18, 2004 7:15 pm
Title: Incipient toppler
Location: Swimming in Lake Ed

sparks wrote:
Thu Dec 05, 2019 8:42 pm
Rob: In the photo you attached, the turntable doesn't really match the vintage of the rest of the piece.

(Does it?)
Yepper.
https://www.collectorsweekly.com/storie ... c-model-46
I bought it for $50 at a junk shop. It played 78's (of which there were three on the platter when I obtained it. One was Bing Crosby's White Christmas. I seem to remember it could also play 16's, but I could be mistaken. It did not play the 33's or 45's. I sold it for$150 to an antique store thus making a $100 profit for about 100 hours of work. I think they resold it for about$200.

Abdul Alhazred
Posts: 83840
Joined: Mon Jun 07, 2004 1:33 pm
Title: Yes, that one.
Location: Chicago