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 Post subject: can anyone identify this RCA tabletop radio?
PostPosted: Sep Wed 15, 2021 5:14 pm 
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any help with the id and age would be appreciated


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Wed 15, 2021 8:32 pm 
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ok - found it. A 1960 Madrid dg-463.
Any thoughts on whether or not it is worth restoring?


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Wed 15, 2021 10:09 pm 
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Location: Carmel, Indiana
bustedknuckle wrote:
Any thoughts on whether or not it is worth restoring?


That's up to you but I'd say it's worth restoring it for yourself but not worth restoring it for flipping.

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www.indianaradios.com


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Wed 15, 2021 10:27 pm 
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Location: 13 Critchley Avenue, PO Box 36, Monteith Ont, P0K 1P0
Indiana Radios wrote:
bustedknuckle wrote:
Any thoughts on whether or not it is worth restoring?


That's up to you but I'd say it's worth restoring it for yourself but not worth restoring it for flipping.

I'd agree. With a few notable exceptions, most of these 1950's/60's Euro radios all look, sound and operate pretty much the same. I used to see them left over at the radio club auctions, not even able to fetch $5 or $10. It's been a few years since I was there, so things may have changed.


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Wed 15, 2021 11:13 pm 
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That's up to you but I'd say it's worth restoring it for yourself but not worth restoring it for flipping.[/quote]

Thanks for the response. I'll do it if it is suggested that it is a decent radio - ie passible sound. I was hoping someone on sight had some experience with it


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Wed 15, 2021 11:26 pm 
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German built sets on the whole do sound good when properly working. This is not particularly a high end model, it was sourced to fill a gap in RCA's product line that they did not want to manufacture themselves, and proved that there was not enough demand to make it worthwhile.

This may have actually been built by Graetz.

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Experience is what you gain when the results aren't what you were expecting.


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 12:02 am 
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Location: Mountains of Mourne. Ireland.
Factory service manual: http://pacifictv.ca/schematics/rcadg463data.pdf

SOP (standard operating procedure) as a first step is to replace the Electrolytic capacitors… especially in the power supply section - - - before switching on.
If you smoke the power transformer you may have a heck of a time finding a replacement, and when you do, be prepared to get your big wallet out. lol

fyi... powering-up vintage tube radios without first carrying out preliminary checks is risky, too many bad things can happen. Electronic components and wires can deteriorate with age - - used or unused.


Some of the old μF (microfarad) capacitance values are no longer commonly found, so choose the next nearest value, up or down.

Examples:
4.7µF is a common replacement value today for the old 5µF
47µF is a common replacement value today for the old 50µF

40µF can be found… but I would just use a 47µF as it is a common found value.

The WVDC (working voltage) of a capacitor is how much "juice" that it can handle
this can be increased.

Replace capacitors one at a time, and observe polarity.

Modern day electrolytic capacitors have become so much smaller since the 1960s and '70s
viewtopic.php?p=3097733#p3097733

Resistors can fail open or short, alongside their value changing....
You can also quickly test/measure Resistors in-circuit (power off) for any that may be OOT (out of tolerance) - - if you see something funny, lift/unsolder one leg, and remeasure.
Values within 10% or 20% is generally okay.
Be observant - - and look closely for burned or near burned components!

Lead dress (the position of wires) can be important in many sets - - - try not to move them around too much.

If you need assistance with a "shopping list" post a screen shot of the Electrolytics in the parts list.

------------

MMF→ https://antiqueradios.com/forums/viewto ... 9#p3318709

Welcome aboard... :)
Greg.


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 12:03 am 
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Location: Mountains of Mourne. Ireland.
If this is your first Rodeo… lol
you may want to check-out these videos by Paul Carlson and John Kopp.
link at bottom of this post: viewtopic.php?p=3425831#p3425831

Here is an informative safety primer that you may find interesting.
Image


also... be aware that electrolytic capacitors can hold a charge after power-down, and give you a nasty bite.
Constructing a Capacitor Discharge Tool...
http://antiqueradios.com/forums/viewtop ... 6#p2318386

Greg.


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 12:16 am 
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Thanks for the helpful tips. Not my first radio, but it has been a while....
If can get it cheaply enough I may give it a shot. (not that I NEED another project...)


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 12:26 am 
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Location: Mountains of Mourne. Ireland.
Well then... you'll do just fine.
I thought that you were a cage fighter... lol

:) Greg.


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 12:30 pm 
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[quote="Mr. Detrola"]German built sets on the whole do sound good when properly working. This is not particularly a high end model, it was sourced to fill a gap in RCA's product line that they did not want to manufacture themselves, and proved that there was not enough demand to make it worthwhile.

Can you give me any examples of "high end" tabletop models - by any manufacturer?


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 12:41 pm 
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Location: 13 Critchley Avenue, PO Box 36, Monteith Ont, P0K 1P0
bustedknuckle wrote:
Can you give me any examples of "high end" tabletop models - by any manufacturer?

Telefunken Opus 7
AEG Super 5086WD (essentially an Opus 7)
General Electric X-371/372 (or CX in Canada)
Philips (Europe) offerings in FM stereo from the late 1950's, early/mid 1960's - great design and fantastic sound!


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 1:39 pm 
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Thanks for that. I'm not sure I've ever seen any of these. I will look them up!


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 2:24 pm 
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looked them up on ebay. OUCH!


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 4:38 pm 
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Location: Metzger Oregon
Well, because you are looking at an RCA, how about the RCA 1-R-81? Zenith make several nice table radios in the 50s and 60s as well. I don't know how these compare to the ones John suggested, but they're inexpensive and readily available.


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Thu 16, 2021 4:41 pm 
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Location: 13 Critchley Avenue, PO Box 36, Monteith Ont, P0K 1P0
bustedknuckle wrote:
looked them up on ebay. OUCH!

Oh yeah !!

About 10-12 years ago I tried to put an ad on the UK "vintage radio" forum, offering $500usd + packing and shipping for an AEG Super 5086WD (AEG version of the Opus 7). I had a list of requirements for which I was ready to shell out some serious coin. The brits looked at my ad, said it looked too professional and wouldn't let me post it because they thought I was a business. I had done some searching for "completed sales" on ebay at that time and $500usd was about 25% high, but I wanted an unmolested version, complete in good shape. I haven't searched for one for several years now.


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 Post subject: Re: can anyone identify this RCA tabletop radio?
PostPosted: Sep Fri 17, 2021 1:07 am 
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classicelectronicsguy wrote:
Well, because you are looking at an RCA, how about the RCA 1-R-81? Zenith make several nice table radios in the 50s and 60s as well. I don't know how these compare to the ones John suggested, but they're inexpensive and readily available.


Good ideas. At least the R CA unit has FM. Not much of a looker, though I'll see if I can find a suitable Zenith


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