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 AWA 500M Circuit
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 Return to top of page · Post #: 1 · Written at 6:24:57 PM on 15 March 2013.
Scraps's Gravatar
 Location: Blue Mountains, NSW
 Member since 10 March 2013
 Member #: 1312
 Postcount: 401

I'm looking for the service data for an AWA 500M Radiolette. I've found some information and a circuit for a 500MY on Keven Chant's website but there are differences between the two and the 500MY sheet refers to the 500M for more information. Hoping someone can help me.


 
 Return to top of page · Post #: 2 · Written at 10:42:50 PM on 15 March 2013.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5389

If I am on the right track it appears in AORSM's. 6A8; 6G8; 6V6; 6X5 and set is back biased via a 40 ohm resistor.

Marc


 
 Return to top of page · Post #: 3 · Written at 6:02:23 AM on 16 March 2013.
Gfr53's Gravatar
 Location: Harston, VIC
 Member since 28 February 2009
 Member #: 442
 Postcount: 145

G'day,

If you unlock your email address, I'll send you notes and circuit on the 500M.

Cheers, Graham...


 
 Return to top of page · Post #: 4 · Written at 9:37:56 AM on 16 March 2013.
Scraps's Gravatar
 Location: Blue Mountains, NSW
 Member since 10 March 2013
 Member #: 1312
 Postcount: 401

Thanks for the quick replies. I've only just started restoring radios and I'm on a very steep learning curve at the moment. I've found myself completely fascinated with AWA radios from the 1940's. I'm working on a 516M at the moment and have the 500M lined up next unless something more interesting comes along! I think the 500MY had the back bias but not the 500M. From what I can gather that was one of the differences. I've unlocked my email address.

Thanks, Warren


 
 Return to top of page · Post #: 5 · Written at 9:54:43 AM on 16 March 2013.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5389

Let me rephrase that.... 500M & 500MY are both in AORSM's.

The back bias in 500M is 40R 500MY has two viz 40R & 200R.

Marc


 
 Return to top of page · Post #: 6 · Written at 9:31:05 PM on 16 March 2013.
Scraps's Gravatar
 Location: Blue Mountains, NSW
 Member since 10 March 2013
 Member #: 1312
 Postcount: 401

Thanks for all your help, I can see the difference between the two now but I need to read a lot more to understand back bias and what the difference means.

This might be a silly question but what is the AORSM's?

Warren


 
 Return to top of page · Post #: 7 · Written at 12:03:57 AM on 17 March 2013.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6761

what is the AORSM's?

Australian Official Radio Service Manuals.

There are dozens of volumes of these covering many years and hundreds of models.


 
 Return to top of page · Post #: 8 · Written at 6:38:37 AM on 17 March 2013.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1209

The AORSM books came in a set of 14 volumes covering most, but not all, Australian radio models from 1937 to 1955. It was not published during the war years due to wartime austerity measures. Australian valve radios (and some foreign ones as well) made after 1955 are covered in the JR valve radio manual. This has most of the valve radio models right up until the end of the valve era.


 
 Return to top of page · Post #: 9 · Written at 1:55:52 PM on 17 March 2013.
Maven's Gravatar
 Location: Canberra, ACT
 Member since 23 August 2012
 Member #: 1208
 Postcount: 584

The National Library in Canberra has a full set of AORSM available for any member of the public to walk in and take photocopies.

Not sure where else it is available to the public - some members here seem to have pretty good collections!

Maven


 
 Return to top of page · Post #: 10 · Written at 4:49:29 PM on 21 March 2013.
Airzone's Gravatar
 Location: Maclean, NSW
 Member since 30 May 2008
 Member #: 291
 Postcount: 341

I have all 14 volumes as do other members here, just sing out and we can help.


 
 Return to top of page · Post #: 11 · Written at 9:03:38 PM on 23 March 2013.
Scraps's Gravatar
 Location: Blue Mountains, NSW
 Member since 10 March 2013
 Member #: 1312
 Postcount: 401

Thanks everyone for your help. Being a beginner I found the chassis layout photos in the AWA 516M service notes invaluable. Unfortunately the 500M service data didn't have this and I was contemplating making my own when I stumbled upon the service notes for the Hotpoint Bandmaster G46ME. Exactly the same chassis - and with photos!

I've had a quick look around the 500M chassis and apart from an obviously vaporised paper cap there's a few other strange things in there. Someone in the past has obviously been at it! I might start another post on that.

Cheers, Warren


 
 Return to top of page · Post #: 12 · Written at 9:37:28 PM on 23 March 2013.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

G'day Warren,

Below is a link to a photo of a couple of each type in various colours. Something I've always wanted is a complete set of the seven known colours but I've one to go.

These Radiolettes also came in a 4 volt battery model with a vibrator fitted where the transformer normally would be.

http://vintage-radio.com.au/default.asp?f=5&th=22.


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

 
 Return to top of page · Post #: 13 · Written at 9:41:43 PM on 23 March 2013.
Chris Ronayne's avatar
 Location: Wauchope, NSW
 Member since 1 January 2013
 Member #: 1269
 Postcount: 576

Just curious Brad, what is the missing colour?

I wish there were televisions around like this, that came in a range of different colours. The best I know of so far is the 12" PYE 12G13, which I've seen in red and white. The 12G13 is also my favourite! I've only ever seen one red one, listed on EBay last year. Wish I could've gotten it.

Chris


 
 Return to top of page · Post #: 14 · Written at 9:45:31 PM on 23 March 2013.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

White with a freckled look, similar to the Quik sprinkled on a cappuccino. Very very rare that one. Although the jade and turquoise are also very rare. in the order in the picture from top to bottom we have turquoise, jade, cream, white, burgundy and walnut.

Here is a picture of an AWA Radiola 'fridge' with the same effect.

Most portable televisions had either white, beige or brown plastic or had a marviplate body with a silverfrost bezel and black rear panel.


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

 
 Return to top of page · Post #: 15 · Written at 10:10:50 PM on 23 March 2013.
Scraps's Gravatar
 Location: Blue Mountains, NSW
 Member since 10 March 2013
 Member #: 1312
 Postcount: 401

Fantastic collection Brad. I've found myself drawn to the 500M and the 516M. Almost identical from the outside but so different under the chassis. I'm sure I'll add to my extensive collection of two radios in the future but I don't think I'll stray too far from the 500's and 516's.

One of each colour? Coming into radios at this late stage it's probably not possible but I think I've got a shot at one of each year model - 500M, MY etc.

Warren


 
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