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 Selex Transfers G.W.green and Sons, What The Heck is This Radio???
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 Return to top of page · Post #: 1 · Written at 4:32:14 PM on 5 October 2016.
Pa Man's Gravatar
 Location: Golden Grove, SA
 Member since 10 April 2015
 Member #: 1726
 Postcount: 149

I just picked up this unit thinking it was a PA system.
Then opened it up and was surprised to find it was a radio system.
The only info I could find is "Selex Transfers G.W.green and Sons" on the Arts and P Sticker.
There are 3 speakers that link together, the first being an Electromagnetic speaker the others are Fixed.
So I have no idea what is meant to be for

Josh

Unknown Radio
Unknown Radio
Unknown Radio
Unknown Radio
Unknown Radio


 
 Return to top of page · Post #: 2 · Written at 5:33:06 PM on 5 October 2016.
Gfr53's Gravatar
 Location: Harston, VIC
 Member since 28 February 2009
 Member #: 442
 Postcount: 145

Hi Josh,

G W Green & Sons were the makers of the ARTS&P transfers.

There are several files on the net describing the reasons for the existance of these transfers and the their use in dating the age of some early radios.

Cheers, Graham...


 
 Return to top of page · Post #: 3 · Written at 9:53:16 PM on 5 October 2016.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7402

My guess is a very early car radio. The "E" on the transfer means 1938 as the year of manufacture. If it is a car radio it'd be a prime example of what luxury items went into cars of the time.


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

 
 Return to top of page · Post #: 4 · Written at 10:52:13 PM on 5 October 2016.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6763

Vibrator in lower right corner suggests a car radio.

Let us know the valve line-up.


 
 Return to top of page · Post #: 5 · Written at 10:31:24 AM on 6 October 2016.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2491

That's an Astor car radio. I have one similar.

These were typically mounted on the firewall or even under the front seat, connected to dash controls with bowden cables.
Speaker is not ED although it looks like it, it will be PM.


 
 Return to top of page · Post #: 6 · Written at 10:46:50 AM on 6 October 2016.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1211

It is a car radio made by Astor.

Assuming the valves used are pre-octal types, models to look at are:

220/DA, 6376/EE (6V) , 6376F/FD (6V), 6376S/ED (6 & 12V) & 12376/FB (12V). Valve line up 78, 6A7, 78, 6B7S, 41 & 84. I.F. 173 kHz.

or

6386/HE (6V) & 12386/HF (12V) Valve line up 78, 6A7, 78, 75, 41 & 84. I.F. 173 kHz.

There should be a model designation stamped somewhere on the chassis.

Also, see this thread:

https://vintage-radio.com.au/default.asp?f=3&th=655


 
 Return to top of page · Post #: 7 · Written at 11:37:28 AM on 6 October 2016.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5401

Not quite identical to one I have here, and its a car radio. That tatty metal plate centre front of the case will be the Astor badge.

Marc


 
 Return to top of page · Post #: 8 · Written at 1:07:29 PM on 6 October 2016.
Pa Man's Gravatar
 Location: Golden Grove, SA
 Member since 10 April 2015
 Member #: 1726
 Postcount: 149

Looks like Astor it is, the line up is
6A7, 41, 75, 2 x 78 and reckon an 84 (not marked) with a 6v Vibrator

Josh


 
 Return to top of page · Post #: 9 · Written at 12:50:40 PM on 7 October 2016.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2491

Hi Josh

Before connecting it to 6v, and unless it's a large mica part, replace the approx .01μF cap that's connected between the two rectifier plates. An OC cap will do a lot of damage (rectifier, socket, transformer) very quickly.

It needs to be a special high voltage, high current cap. You can often find one in a junked computer monitor.


 
 Return to top of page · Post #: 10 · Written at 3:22:25 PM on 7 October 2016.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5401

I often use Line caps on the vibrator side as they have a high punch through & should not short, padder & other caps tended to have an attrition rate due to the spikes. Any original caps should be treated with suspicion. Do not use capacitor start caps.

Do not change values on the vibrator side as it is actually a resonant circuit.

Marc


 
 Return to top of page · Post #: 11 · Written at 7:13:23 PM on 7 October 2016.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2491

A line cap would not be a good choice because they are designed to go O/C easily if spiked for safety reasons. That's exactly what you don't want. Better to go S/C, less damage that way.


 
 Return to top of page · Post #: 12 · Written at 8:44:25 PM on 7 October 2016.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5401

The punch trough of "x/y" caps is quite high due to the spikes & transients you get on the mains & I had one incident recently where two of my design surge protectors actually did what they were supposed to do.

It must of been a decent surge, or lightning, as one part tripped out their circuits, circuit breakers, the other the RCD's, which is what they are, as noted, supposed to do.

I have seen the damage from some of the caps in those radio's shorting and it is avoidable.

Marc


 
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