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 Astor - late 40s or early 50s
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 Return to top of page · Post #: 1 · Written at 7:53:36 PM on 11 March 2010.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

I have got an old Astor that I am having trouble trying to find information on. I know that the audio transformer is stuffed (Broken wire). from searching the web it looks like it could be a
Deluxe Six
NS
GN
...

I cant tell and I am new to this so don't know where to start to get information. if I could get a circuit diagram it might help. I have photos if needed.


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 2 · Written at 8:15:46 PM on 11 March 2010.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4178

There were a few variants of deluxe six. some had record players.

Those numbers are good. But the valve compliment is the second way of confirming.

One is 1950 the other 1951 Ihave a sneaking suspicion that those have a speaker transformer that is inboard & connected to HT.

Marc


 
 Return to top of page · Post #: 3 · Written at 8:38:01 PM on 11 March 2010.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

Thanks for that....

I have just checked the Valves installed. they are listed left to right looking at the back of the unit

6A8G 6U7G 6B6G 6V6GT/G 5Y3GT

Its the one with the 2 gang tuner!

the transformer or choke that is stuffed is at the back of the chassis. I haven't taken it out of the cabinet yet but there is no markings that I can see. even the paper Licence sticker is missing.

This radio was in My Local Town Hall or CWA (i remember seeing it as a kid about 25 years ago) and is in very rough condition but I want to make it work again just to get into doing valve radio restoration.


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 4 · Written at 11:01:35 PM on 11 March 2010.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4178

Normally I would expect six in the 6, thats the standard, common, 5 valve line up? Later they used 6B8. WD scarpered of with a lot of the 6B8's.

Try for 154 AN stamped into the chassis back or top back edge.Its 1939.

It should not have SW. If it is, it's got the wrong converter.

Marc


 
 Return to top of page · Post #: 5 · Written at 3:11:50 PM on 12 March 2010.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

I cant find any markings on this set. I havent had time to pull out the chassis out of the Bakelite case yet. The front of the case dosnt have Deluxe Six on it. It is shaped like it thats all. It came from a repair shop that went bust (as many are now). The valve line up may have changed. I have looked to se3e weather there was a spot for a sixth valve but all sockets are filled.

Just checked the ORSM listing PDF and found the model and valve line up.

Astor, 1950, GN, AC AW Man. 5 455kHz IF
6J8GA/6AN7, 6U7G, 6B6G, 6V6GT, 5Y3GT
AORSM '50 p37
4 band.
Available in molded or wooden cabinets

What does the line AC AW Man mean?

Does anybody have a copy or know where I can get one? Also what can I do with the busted choke at the rear of the chassis ( I thought it was the O/P txfr but I was mistaken.)


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 6 · Written at 6:44:01 PM on 12 March 2010.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6174

AC = alternating current. AW = all wave. I give in on 'man'.


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 7 · Written at 6:58:40 PM on 12 March 2010.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

Thanks. Thought that's what it meant. I thought 'man' meant mantle. I don't know but. I haven't seen a mantle big enough to hold this radio!!!

Has Anyone got the manual for this set?


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 8 · Written at 8:27:02 PM on 12 March 2010.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4178

Thought that sounded wrong.
"W" was quite often wooden.
It has to be a 6J8 not a 6AN7. 6AN7 is a minature.

6A8 & 6J8 are pin interchangeable. 6A8 [Pentagrid] is not a shortwave valve and is liable to run out of puff at high frequency.

6J8 & 6AN7 are Triode Hexode's. In Astors especially JJ, using one in place of the other will impinge on the bandspread.

Look on the top right edge of the chassis for the number, it should not have a "W" in it. The common sets were console, table, mantle.

I need to look at the circuit but in the case of a Philips 132L the floating wire was a feed back one that was disconnected, as the dill that did it & also wrecked the speaker, changing the transformer; did not have the brains to wire it in phase to stop it oscillating.

So I will wait to get better evidence, after the chassis is removed.

Marc


 
 Return to top of page · Post #: 9 · Written at 9:41:08 PM on 12 March 2010.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

It is the 6J8. I just copied the text as what the OARSM PDF index said. so I know know the model witch is an Astor 1950 GN.

So all I need now is the diagram to work out the choke and replace the caps because they cant be read.

Oh yare the chassis isnt marked in any way. It is all origional and I suspect has never been touched. It would have been shelved due to the choke being stuffed. all other transformers meter out ok. Even the dial cord and globes are good.

I just want to make it work. I am considering replacing all caps and resistors and cleaning all the pots.

What is the pot on the left side of the radio? I know that the front has power/volume & tuning, right side is the band selector, what is the one on the left?


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 10 · Written at 10:54:25 PM on 12 March 2010.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4178

Could be tone?

I have sent Brad photo of older version FJM, FJ, A52, B52,

I will send GN variant with 6J8

Choke can be replaced by resistors, but you need to know approx resistance of choke circuit will tell you, beware the Wattage. Voltage drop should indicate. W = current squared by resistance.

Astor FJM/FJ circuit diagram
Astor FJM/FJ circuit diagram
Please click images for higher resolution.


Astor GN circuit diagram
Astor GN circuit diagram
Please click images for higher resolution.


Marc


 
 Return to top of page · Post #: 11 · Written at 5:48:43 PM on 13 March 2010.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

Thanks for that. Look forward to seeing it


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 12 · Written at 8:48:01 PM on 13 March 2010.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6174

Images are uploaded. Smile


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 13 · Written at 11:36:52 AM on 15 March 2010.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

Just a few questions so I dont stuff this set.

What value resistors should I use to replace the choke. The circut says that the choke is 520ohm

I did some figures with this value and came up with a bit over 3w.

Is this correct.

Oh by the way... The radio is the GN. I have traced eveything and I definatly have the wrong valve as you said above. I will look for the 6J8GA when I get a chance. I guess this is a item that had been replaced sometime. will the 6A8GA work for BC (AM)? or what equilivant can I use without modifications. I am not too worried about SW at the moment.

All of the internal plastic covered wire is stuffed and I have to replace all of this as well as the paper caps.

(should I change the Mica ones as well?)

Thanks
Daniel


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 14 · Written at 1:51:51 PM on 15 March 2010.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6174

I don't think they make a 3 watt resistor. The next step up is a 5 watt one, which are the ones in the white porcellain jackets.


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 15 · Written at 4:24:52 PM on 15 March 2010.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4178

Evatco have 2 & 3 Watt resistors, however five is on the safer side.

I would work on 80mA and call it 3.5 watt. Plastic wire being stuffed is unusual, albiet I have seen some go hard and shed its skin.

Astor had a habit of using the lower grade rubber sheathed wire which self destructs with monotonous regularity. The stuff on the transformers is the real pain. I have been forced to fix several of them, as they can be dangerous & can short as well.

The 6A8 [Hexode / pentagrid] will probably run OK but if the stations do not fit on the dial (bandspread). That will be "probable cause".

As said, they are pin interchangeable, albeit that thy are not the same and may perform slightly differently.

Leave the Mica's alone at the moment

The circuit was designed for the Triode Heptode 6J8 there is a Philips equivalent ECH35 I think.

I note those pale "Styroseals" in a post, have a good look at those, if you see them in anything, I have seen a few of late that have cracked at the ends. This may allow moisture in, or initiate mechanical failure, or both. outcome is the same.

Some mud ones did things like that.

Marc


 
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