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 STC 8471 RadioGram Chasis
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 Return to top of page · Post #: 1 · Written at 5:50:01 PM on 11 April 2018.
Captgogo's Gravatar
 Location: Sydney, NSW
 Member since 22 May 2017
 Member #: 2114
 Postcount: 120

I picked up this Chasis at a recent radio club meeting, the photos will be uploaded soon.(thx Brad)
I only got the Chasis, no speakers, no cabinet or turntable. This is a 8 valve line up and I finally found what I think is the right circuit, though the valves shown on the sticker on the Chasis do not all match but on checking seem to be equivalent.
The line up shown on the sticker in case the photo is not clear is
5Z4, 2x 6BW6, 6BA7, 12AX7, 12AT7, 6N8,EF93.
The Circuit I have shows a 6BA6 which I believe is equivalent to a EF93, my Chassis actually has a 6BA6 so all good.

One valve is missing, the electronic eye I assume being a EM85 which I assume was placed on the cabinet as I see no socket for it on the Chassis.

If you look on the underside of the Chassis it has been attacked by rodents, Caps are chewed and not recognisable.

I have a number of old similar period turntables which I could use with this as am am Amp. They are HMV and Garard, so my objective if it is deemed worth it is to restored this to use as an the Amp.
So my question to those that are more Vavle Electronic wiser than me, is it worth it and would it be quicker to ingnore the RF section or do I save nothing by doing this and should go through the whole Chassis.

My guess is the later and then the question after some initial test of the Power Transformer, what would you recommend me doing and in what order.

As it has no speakers what could I use, I have a number of more modern 8 -16?ohm speakers but would these work?

Again the key question is this a good quality Amp and worth the trouble to restore.

Thank you for any input you can provide.

STC Capehart Valve Radio
STC Capehart Valve Radio
STC Capehart Valve Radio
STC Capehart Valve Radio

 Return to top of page · Post #: 2 · Written at 9:42:26 PM on 11 April 2018.
Brad's avatar
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6758

Photos uploaded.

A valve a day keeps the transistor away...

 Return to top of page · Post #: 3 · Written at 8:56:24 AM on 12 April 2018.
Fred Lever's Gravatar
 Location: Toongabbie, NSW
 Member since 19 November 2015
 Member #: 1828
 Postcount: 1018

Hi, I have one of these chassis and built it into a cabinet after the first fix up.
I put a record changer at the top of the cab.
I have a PDF article covering the whole thing, possibly in special projects or I can email the pdf to you.
Also in special projects you will find the article where my power switch blew up!
The tuning indicator is right in front of your eyes on the dial and you view it through the slot.
The Capeheart name is pinched from the American name of a very high quality receiver.
The STC is not quite in the same league but is their attempt at an up market reciver with PP output, Hi-Fi controls and works very smoothly and quietly.
I had to fix a few things on mine to get it going including rewinding the output tranny.
Yea its worthwhile, a very nice receiver.
If you email in unhidden I'll send the PDF to you.
Cheers, Fred.

Email sent.

 Return to top of page · Post #: 4 · Written at 11:55:11 PM on 12 April 2018.
Brad's avatar
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6758


A valve a day keeps the transistor away...

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