Hi , have up loaded some photos, Thanks Brad,.What I have here is radio from 30s, no name or numbers ,with the line up 80 2a5 58 57 and unknown ? Pic Of Valve.

Looked through the Forum and found a couple of references to the 57 . Looked the net And found a couple of sets with the line up with 57 or 2A6 .The pic is definitely not a 57 and resembles a 2A6 but as no markings on Valve I cant be 100 percent sure. And also I guess , whatever is this valve could have been just put in there.

The electrics are not in a good way re wiring and condition, needs a really good clean.Mainly brought for the cabinet,Have fitted a mini amp etc. but I would like to keep the Guts of the unit intact ,and a diagram of what I see,and the values of everything. in the event someone with more experience sometime wanted to restore it.

Anyone Any Ideas?

  
  

I will await photos. I have repaired a procession of radios with that combination and different brands. its probably missing another #58.

Marc

Another Question ?, if anyone has any ideas,On the 4th photo is a input connection,between the sound and tone pots that is just a bit smaller than a modern earphone plug, when looked from underneath it is wired directly to the mains wire.This I suppose was some kind of On / Off..:..Dangerious I would think ! Was it a common thing from radios from the 30s? Its not a later addition, But when looking at the whole unit it seems to be home built, even though it is very old. A few German and English components,Made be a mail order unit or something? This ones not for me. Just Curious I Guess

I suppose was some kind of On / Off..:..Dangerous I would think ! Was it a common thing from radios from the 30s?

In my experience, Aussie sets of that vintage lacked an on/off switch. In fact I read somewhere that having an on/off switch on an appliance was against regulations in that era (needs verification).

The photo of the front of the chassis is out of focus so I cannot quite make out what that thing is although it appears to resemble an RCA phono jack -- which if true should NOT be connected to mains voltage.

Looks like the dog's dinner. What sort of camera was used? Fuzzy photo's are not helpful. Auto focus can be a problem. The tripod is not obsolete. You can improve depth of field by moving back & by using a higher number f stop then cropping it later.

It often pays to photograph in daylight.

Missing valve will be a 58 that is a common line up for an autodyne (screen grid radio).

Need a better photo of that which GTC is commenting on; I see no speaker plug and it needs to be 4 pin minimum as it would have a field coil speaker (Electrodynamic).

There is evidence of a mains cord but there is no way that any attempt should be made to power it.

although it appears to resemble an RCA phono jack

you can see the back of it, looks very much like a headphone jack.

In any case it's lucky that someone cut the mains cord off, the way things are it's deadly.

I've seen plenty of radios without on/off switches, there's nothing unusual about that.

Perhaps the headphone jack is supposed to be a bodgy power "switch". It's hard to say.

Anyway the thing needs a complete overhaul before connection to power is contemplated.

looks very like a headphone jack.

In which case it also should NOT have mains voltage connected to it.

I believe the mains cord is not related to that jack. There may (?) be a resistor to replace the choke and hopefully a set of high impedance headphones were used on the 2A5 which would see them in the plate circuit.

Operating with an open plate is liable to fry the 2A5 screen, as it becomes the plate.

As said most of these followed the same plot. The EMMCO that I reverse engineered uses #58 TRF; #57 Mixer/osc; #58 IF Amp; #55 Plate detector &1st audio; #59 Audio OP. Rectifier #80.

It had also been hacked & there was no circuit.

Yes Thanks, All that info, on board, Like I said it is in a bad way electrically, and mainly brought for cabinet Which has a mini amp playing usb 3mp fm aux input with a couple of good speakers sounds better that it ever could or would have. The power cord Had a plug on it when I brought it...and it just goes to show what dangers are out there. luckily, for the past couple of years getting heaps of info from this forum,I understand And just cut the power cord on any vintage radio untill ive had a good look at everything. Unfortunately ive reached my Max of photos, but it defiantly has a input, just a bit smaller than a modern mini ear phone socket. And this is connected directly to one side of the power cord. the other side of the power cord is connected to the transformer.?
I was just curious if anyone ever had ever come across this as it doesn't look as though it was modified later. Not to worry,Thanks anyway

I have seen a phone jack used as push-pull switch or momentary switch. Maybe for tone control, not power.

Findlay 2 way radios we used back in 1970s used this method to implement a tone call system where the channel knob would otherwise have been.

I am not backing away from this being hacked & the dog's dinner would be tidier. That Phono plug does not belong there, the volume pot likely does. With the distance traveled there is likely a need for at minimum an added tag strip and shielded wire.

The speaker plug (UX-4, UX-5?) that should be on the back panel next to the OP valve seems to be missing, and there were probably, as mooted, headphones in the OP tube plate circuit.

This is a mess that is going to take some tidying up. The OP transformer and field coil (choke) are on the speaker, where is it? I have seen similar & worse. The OP valve may well be damaged? If it was here the valves would be tested even before I even turned on a soldering iron.

Marc