Hi guys I have had a few people have a look at this radio and say its not original besides the metal bar missing the power cord is meant to come out the other side and its meant to be the same as a airzone radiostar is that correct? also what model is this thanks any help would be greatly appreciated piks below

http://i246.photobucket.com/albums/gg83/blingbling_2008/IMG_20120114_180014.jpg.

http://i246.photobucket.com/albums/gg83/blingbling_2008/IMG_20120114_180003.jpg.

The last Airzone that I serviced was a console 612 Battery that appears in Silicon Chip.

That had its own "Airzone" Branded speaker, which is why I made the effort to save it. The chassis looks transitional, around the start of the minatures. The chassis paint is more consistent with STC, who tended to use odd ball valves on occasions.

I see a very indistinct number on the LH side. That is possibly what it is? Listing the valves may also be of use.
Airzone chasses were often labelled "Airzone' with the valve positions.

The finish and type of cans, to me is not what I would expect of EMMCO.

The speaker looks recycled.

You can re photograph the number, preferably with tripod and crop if you have to get back a bit, due to focus limitations.

Marc

The chassis does not look like an Airzone chassis. The case looks like its from an Airzone model 501 'radiostar'. I have the model 550 version. The chassis sits much higher and yes, the power chord comes out from the other side. The tubes in mine are 6A7, 6D6, 75, 42 and and 80 tube rectifier. There is a large airzone sticker on the chassis on it too.

http://www.radiomuseum.org/r/airzone_550.html example can be found on this site:

The chassis layout in your pic looks very different - that small tube on the left hand side may be a little modern for a 1937/8 model? Not sure on that thuogh.

Hope that helps,
Regards, Angelo

STC practice was to stamp the chassis serial number on the back panel of the chassis. The model number was on a paper label along with the valve line-up, also usually on the back. But the silverfish love them so sometimes missing.

The transformer looks like STC. The ARTS&P sticker, pale blue with no letter prefix suggests mid fifties to early sixties. This would be consistent with the mixed large & small valves.

The chassis layout in your pic looks very different - that small tube on the left hand side may be a little modern for a 1937/8 model? Not sure on that though.

It is a little modern. Baseless valves didn't come into vogue in Australia until about 1949. The Radiostars were also too early for octal valves. Valves were mostly the pre-octal four, six and seven pinners though in the case of my AC/DC model it is equipped to take P-base valves. Valve lineups for the three models I have are as follows:-

Model 452 (AC-only): 80, 6A7, 6F7, 42.
Model 520 (AC-only): 80, 75, 6A7, 6D6, 42.
Model 529 (AC/DC): C1 Barreter, EK2, CF2, CL2, CY2, CBC1.

There were also shortwave and DC-only models. Most cabinets were brown with either a brown or white grille. I have a rare all-white version here and there was also a jade green model which is also very rare.

1938 I would not see minatures 6 & 8 pin, some "P" base, often mixed and the UX4 based, 80 as the common rectifier..... yes

There is a possibiliy that someone has exchanged a hard to get 6B6 for a 6AV6 or it's actually the converter 6BE6, 6AN7, or similar, which would be early fifties.

Its looking like the cabinet is actually AIrzone.

The cabinet is Airzone but the chassis isn't. Whowever made the chassis did a good job of marrying it up to the cabinet however. The Airzone chassis (all versions) was about 60mm high.

This set came with at least three grille styles too. Two Airzone grilles and one for sets with Mullard badges as Airzone made receivers for Mullard at that time.

The annoying thing about EMMCO (Email) was that circuits etc were available for everything that they built for everbody else, but there own were scarce.

EMMCO would have very likely made the transformer , and several other parts, themselves, if it was one of theirs.

I would still like to see the numbers on the chassis. There is an off chance that the ARTS&P label numbers will also give the game away.

We do need more info off of the chassis.

Marc

Hi guys here is some more piks of the back I've been flat out with work

http://i246.photobucket.com/albums/gg83/blingbling_2008/IMG_20120116_181224.jpg

http://i246.photobucket.com/albums/gg83/blingbling_2008/IMG_20120116_181218.jpg

Thanks for the info guys I knew the speaker was changed but I don't know enough about air zone to know what its meant to look like I have purchased radio days book which should turn up this week so hopefully it will help me more on identification otherwise I have you guys

Radio Days won't disappoint, though you will be better off in this regard with some photos of one of my chassis. I will sort something out tomorrow and post the pics here.

Can we have some valve numbers?

That may be a chassis number as a quick run through a list on the HRSA site has nothing with numbers that high other than STC.

The Minature looks (and the number appears) to be 6BE6 which is a converter and the one next to it could be a 6SQ7 as it has no top cap? That rather confirms my suspicions on a chassis of around the early fifties.

STC has not been crossed out yet.

Marc

The small one is indeed a 6BE6 and the one on the right is 6B8 GT but one further to the back has been rubbed off below is a pik of bottom if that helps

http://i246.photobucket.com/albums/gg83/blingbling_2008/IMG_20120118_203757.jpg

Ok the photo of the power cable is not useful. The valve that I can see through it is probably an "Over & Under" plated 6X5 if you can't identify it remove it and photo graph it so that the plates can be seen. That type are notorious for heater cathode shorts.

How many valves are actually in it?

So far I think I have the rectifier, the converter and a det audio.

I think there are two IF cans, which means if it has four valves is is possibly an STC B114 or A4100RB3 and is reflexed.

If it has five valves, possibly a 6U7 (has top cap) in a can and both types have a 6V6 output.

Marc