[Radioroslyn]

of going to Kutztown was a Firestone 4C3 portable (Sam gave it to me). I was really beat after I got back but after a little rest I thought I'd have a look at it. Popped it apart to find a missing 117Z6 (I guess I really didn't find it) and 2 tubes switched places. Checked the filaments two flunked (1A7 and 1H5) so replaced those, restuffed the filter can, and replaced paper caps. Couldn't put  my hands on a 117Z6 so used a 1N4007 in it's stead. Powered it up on a variac, I wanted make sure that the 1N4007 wasn't going to deliver too much dc to the filament string (9v@50ma). I found later that my line voltage is about 114v which rendered 8v to the string (too low) so had to juggle some resistors to get about 9.5v. Sorted a few other minor issues and listened to some otr from a local station.

Centered the dial pointer and did a rf and if alignment. Don't really like the circuit, when it's plugged in to the socket it doesn't switch the ac line off. This means that the 117Z6 is on all the time it's plugged in. And it's making hv too which keeps the filters charged. May have to add a little lamp switch to the ac cord to kill off everything. Next time I'll in the bakery department I'll be looking for some tasty treats in a large clear plastic container, the dial cover it missing.
http://www.nostalgiaair.org/pagesbymodel...006226.pdf
Looks like this   http://www.radiomuseum.org/r/firestone_4c3.html