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 AWA 457 MA
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 Return to top of page · Post #: 1 · Written at 5:22:45 PM on 14 September 2018.
Arty41's Gravatar
 Location: Brisbane, QLD
 Member since 18 September 2010
 Member #: 102
 Postcount: 294

I'm emailing on behalf of a friend who is looking for any information and circuit for an AWA 457MA. He has checked- AORMS - Kevin Chant - Radio Museum - Missed circuits (HRSA)

Thanks

Rudy


 
 Return to top of page · Post #: 2 · Written at 5:53:48 PM on 14 September 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6010

This is probably close enough to be useful. Click twice on the schematic to launch the download script:

https://www.radiomuseum.org/r/amalgamate_467ma.html


 
 Return to top of page · Post #: 3 · Written at 7:20:50 PM on 14 September 2018.
Arty41's Gravatar
 Location: Brisbane, QLD
 Member since 18 September 2010
 Member #: 102
 Postcount: 294

I'll pass on your comment, I'm sure he would have seen that on RM as well and probably didn't consider it close enough.


 
 Return to top of page · Post #: 4 · Written at 8:54:37 AM on 15 September 2018.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1131

There is no such model as a 457MA. There is a 457P, which is a 4 valve battery portable.

The MA suffix indicates a mains powered mantel & P is for portable. AWA do not share model designations for different types of radios.


 
 Return to top of page · Post #: 5 · Written at 9:36:50 AM on 15 September 2018.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4339

AWA was but one that did a lot of "Badge engineering" & assembly for others EMMCO was another etc.

It would not be at all unusual to find an AWA set, RCA, Hotpoint, Bandmaster etc. made by them with the same circuit as a Badged AWA set. That sort of thing still goes on.


 
 Return to top of page · Post #: 6 · Written at 3:10:34 PM on 15 September 2018.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1904

Is it perhaps a battery mantle set based on the 457 portable?


 
 Return to top of page · Post #: 7 · Written at 11:33:11 PM on 15 September 2018.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4339

It would be useful to find out what valves are in it? Westinghouse made a 457 and 457M. Westinghouse + GE = RCA


 
 Return to top of page · Post #: 8 · Written at 5:59:31 PM on 16 September 2018.
Arty41's Gravatar
 Location: Brisbane, QLD
 Member since 18 September 2010
 Member #: 102
 Postcount: 294

The AWA 457MA does exist.

http://www.thebakeliteradio.com/page64/page64.html

E-Bay item number 113247440249

Clearly marked.


 
 Return to top of page · Post #: 9 · Written at 7:54:36 AM on 17 September 2018.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1131

They are both 467MA's. The figure 6 with AWA model designations can often be mistook for 5. The font is blockish and can either fade or smudge. If you Google 457MA, you'll see many people have made this mistake. Here is an example:

https://vintage-radio.com.au/default.asp?f=3&th=930


 
 Return to top of page · Post #: 10 · Written at 5:02:14 PM on 18 September 2018.
Rollerboy's Gravatar
 Location: Brighton Le Sands, NSW
 Member since 18 January 2016
 Member #: 1860
 Postcount: 9

The eBay listing that is referenced is currently for sale by me. To me it clearly says model 457MA. I’ve got no idea whether that’s right or wrong but that is what it says. There is clearly a gap in the bottom circle & it is straight across the top which is how a 5 is written. If that doesn’t match up with peoples beliefs that’s cool what more can I say other than ‘ok’ lol


 
 Return to top of page · Post #: 11 · Written at 8:49:23 PM on 18 September 2018.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4339

Perhaps a very sharp photo of the numbers, is now in order, by all parties?

Distorted, missing and factory sets made up of two versions, are not uncommon. I have even had an AWA "special" based on a current model (at the time) which shared the same parts list, but had an added 6A6 PP amp. changed IF frequency and was changed from back bias to conventional bias.

Valve line of these sets up, could be included?


 
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