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 STC and Philips Radios
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 Return to top of page · Post #: 1 · Written at 9:51:53 PM on 17 April 2011.
Haitch's Gravatar
 Location: Bendigo, VIC
 Member since 17 April 2011
 Member #: 882
 Postcount: 5

Over the weekend I was lucky enough to go through my Nans shed and I found two beautiful Vintage Radios. I love anything vintage (Furniture, bottles, posters, mixmasters etc) so was instantly attracted to them.
Nan gave them to me and now I am on the mission of finding out more about them. I dont know if either of them are working because I dont want to plug them in and hear a pop - as you can imagine.

So here is the information that I have put together on each one so far. Please help me with anything you can.

Cheers - Hayden

STC Model 5101 - Made in Australia
It has 5 Valves - O6V4, 12AH8O, 6BH5O, 6AT6O, O6CH6
Its stamped with K36819
Looks to be in excellent physical condition but like I mentioned I still dont know if it works.

Phillips - (Bakelite)
It has 5 Valves but I cant read the markings on them.
Stamped with 82415
(No other markings - I will post some photos!)


 
 Return to top of page · Post #: 2 · Written at 9:54:30 PM on 17 April 2011.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

G'day Haitch,

If you want some photos included here but do not have your own hosting, just e-mail them to the address on my profile page and I will add them for you.

Very odd valve types for the STC receiver though. Are you sure about those leading and trailing O's? The rest of each type number looks legit though.


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 3 · Written at 10:12:51 PM on 17 April 2011.
Haitch's Gravatar
 Location: Bendigo, VIC
 Member since 17 April 2011
 Member #: 882
 Postcount: 5

Well I read those Valve types off a sticker thats inside the radio. When I look at the actual Valve markings; your right in that they dont have any of the O's on them


 
 Return to top of page · Post #: 4 · Written at 10:47:34 PM on 17 April 2011.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

G'day again,

I'll have a look into that and try to find out why the sticker has the O's and also see if that is peculiar to STC or not. Smile


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 5 · Written at 11:17:55 PM on 17 April 2011.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5389

The zero's sound odd. The only STC I have seviced with minature valves recently was an A5140/1.

These were the common numbering system valves.

If either set has been left sitting for a number of years and you have little technical knowledge of these radio's: Powering them up to see if they work. is unwise.

That Philips number sounds more like a chassis number. Often the number is on the backboard if it has one Eg. 132L

Photo's will give us a better idea of its era. STC is going to be after 1950 has it got 3NE on the dial (1600 kHz)?


 
 Return to top of page · Post #: 6 · Written at 6:09:58 AM on 18 April 2011.
Gfr53's Gravatar
 Location: Harston, VIC
 Member since 28 February 2009
 Member #: 442
 Postcount: 145

G'day Haitch,

The STC 5101 is a five valve mantle model. It was named the "CAPRI" and had a round station dial. Production was around post 1956.

If you require a schematic, unlock your email address in your profile page and I'll send to you.

Cheers, Graham...



 
 Return to top of page · Post #: 7 · Written at 6:15:00 AM on 18 April 2011.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

It's amazing what a good sleep will do. I see the light with the valve numbers. It sounds like the STC label is showing the position of the valves on a layout diagram and these are respresented by a circle, with the valve number alongside.


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 8 · Written at 7:27:51 AM on 18 April 2011.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5389

That sounds more reasonable. This diagagram can be used to ensure that the valves are in the holes that they are supposed to be in and they are the valves that are supposed to be in those sockets..

A warning: For Haitch try to keep the fingers off of the valve numbers. By far the greater percentage of valves of that era had numbers that come off when handled.

A paint marker is handy to re-mark. If you do remove the number re-mark immediately even if you temporarily use tape.


 
 Return to top of page · Post #: 9 · Written at 10:52:45 AM on 18 April 2011.
Tinkera123's Gravatar
 Location: Melbourne, VIC
 Member since 5 October 2009
 Member #: 555
 Postcount: 466

Hey Brad ......that was a very impressive night of sleep. I'm off to bed early tonight ........ with a list of radio problems under my pillow!


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Cheers, Ian

 
 Return to top of page · Post #: 10 · Written at 11:52:53 AM on 18 April 2011.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

A good sleep doesn't happen often for me so even that was amazing.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 11 · Written at 3:50:49 PM on 18 April 2011.
Wa2ise's avatar
 Location: Oradell, US
 Member since 2 April 2010
 Member #: 643
 Postcount: 831

The wax paper caps and electrolytic caps will need to be replaced. As the old ones get leaky and that would cause the circuits to not function correctly. The tubes are probably good, tubes sitting unused in a set or in boxes on the shelf will last forever. But the caps are surely bad by now, the wax lets moisture from the air to get inside, and that degrades the paper and foil of the cap. See http://www.wa2ise.com/radios/repair.htm for more info, and also http://www.antiqueradio.org/recap.htm though I wouldn't try to remove all of the old cap's leads off of terminals. "AA5" stands for "All American 5ive" tube radios, though Aussie radios are very similar except American radios were usually "hot chassis" designs and Aussie sets usually use power transformers.


 
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