Wow this one is a little beauty so nicely made. I Bought it on ebay last week for 112 bucks. I took it around to my Good mate that is teaching me how to restore them and he thought it was a real beauty as well. It's pre world war 2 and is called a peoples radio. It was intentionally designed to not be too sensitive as to pick up propaganda from other countries. it now has pride of place in my radio room and really sets the tone. It does need a high impedance speaker or horn but that will come in time. Thoughts please guys.

I have sent a schematic for this radio to the administrator.

Telefunken 121W Circuit Diagram

The radio certainly does have the correct power cord for a "Toaster".

Wayne

Interesting set: RE 134 is equivalent to a Philips 409.

Tonabnehmer: That will need to have some form of capacitor, in series with any magnetic type turntable pick up cartridge, or you will short out the grid bias; If the circuit is as the one posted

Hey Labrat thanks so much for the schematic. Buddy can you tell me what do you know about regenerative technology.

It does have similarities with a pop up toaster .... The valves are popping out. Lets hope they are not cooked..

The set is essentially a TRF . Regeneration was a discovery of Edwin Armstrong and involves the same valve in this case, re-amplifying the signal that is passed back to it.

Data for E438: Note that a European sockets are not all exactly the same as American. http://frank.yueksel.org/sheets/170/e/E438.pdf

Data for REN 904 http://frank.pocnet.net/sheets/105/r/REN904.pdf

I would strongly recommend that you have a look at the wiring of that valve on "Radio Museum" It is drawn here as a "Cold cathode tube" but the data and what is printed on it will show a 4V heater: So it is an indirectly heated type.

Marc

I will have a look. my tech will know what to look for. thanks for that I'm just learning and am grateful for all suggestions. I personally just think this such a nice little unit.

It would be interesting to see what is in the pan of that? Do note that it may well, not have polarized electrolytic caps.

I refurbished a 1929 Lyric & it did have one polarized electrolytic cap that was added, by someone (not in parts listing), possibly USN, that knew what they were doing. This to re-resonate the resonant "B Voltage" filter to 50Hz from 60Hz. I did not use electrolytic's in it.

I note that some in the USA are using a film type non polarized cap to replace the filters as they do not suffer the loss of "form" if the set has been left sitting a while.

Secure, or remove & wrap (bubble wrap) the valves before inverting the set; we do not need breakages.

Marc

Hey guys how can I get a speaker to work on this radio. I know it needs a high impedance speaker. is there any mods I can do to make a normal speaker work.

In theory you just hook up a speaker transformer, the primary winding goes in place of the high-impedance speaker. However I just had a look at the schematic and I seriously doubt there's going to be enough volume to be any more than barely audible.

You'd need more likely a 1:1 transformer feeding into an amplifier so you'll be able to actually hear something.

Would it possibly be only for headphones do you think?.

Should be ok. Hook up the speaker transformer in the way I said earlier, and the output can go to the headphones.