Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

38-9 bullet - how bad is too bad?
#16

Cheers guys, progress has halted for the moment, since the 'long hot dry summer' we were promised by the weather forecasters has become a humid rainforest kind of summer instead. It's pouring rain again here today. But at least I can go and light the burn pile in the small paddock.

Arran, I don't have a press, but I will heed your advice, and keep the speaker to play with it later on. For now I'll use the working one I have, which should fit just fine. It's deeper, but there is nothing behind it in the cabinet.

I tested the valves, and replaced the 6K7 and the 6A8, then aligned the I.F., and it played all day yesterday just fine. Interestingly, it was very unstable and whistly coming onto a station (like a BFO almost) with the shield on the 6K7 (either old or new), but with it off, it played just fine. I haven't checked the voltages yet - I may do that today just to ensure things are in spec.

Overall it's about what I'd expect for a 5-valve set (it's a 6-valve, but only because the detector and first audio valve are separate instead of using a 6B8 or something similar), but there is one fairly strong AM music channel we get here, and I think with a decent aerial it should work well enough to listen to that, or my AM transmitter.

I guess I should move this over to the cabinet forum to try and finish that now, once the skies clear... Once I do I'll add a link to the post here. Thanks to everyone for the support and advice Icon_smile

Cheers, Steve

There are no personal problems that can't be overcome with the liberal application of high explosives
#17

Hello Steve,
Well done on your set so far I need to get back to work on my Philco 38-10T but I have a customers Clock to finish up this weekend !

Sincerely Richard
#18

Cheers Richard. Thats the joys of working on other peoples stuff - it gets in the way of your own. I probably should be working on the AK708 I have here for someone... but I put it aside to do this one.

I think I've sorted the whistling... I went back and double-checked my sig-gen on a whim. I had thought its dial was accurate (it's not my main one, because I'm working in the spare room, not my workbench which is covered in the aforementioned Atwater Kent), but it was sitting around 490kc/s when I put the scope on it, so I re-tuned it to 470 using the scope, then re-aligned the I.F.s and its stable with the shield on now. Bit of a foolish mistake on my part - trusting the dial on an old sig gen. I've put a mark on the dial now for next time...

Cheers, Steve

There are no personal problems that can't be overcome with the liberal application of high explosives
#19

Hello Steve,
Well all have been there I have a older Stark brand generator I have learned to use my Fluke Feq counter and scope .
My day job is working at a public school working with teens .

far as my Philco 38-10T my next step is making some new Dogbone style resistors !
I stuffed all the original Capacitors .

Sincerely Richard
#20

Steve  The tube shield is it grounded? Might be acting as a kind of gimmick cap.  https://philcoradio.com/phorum/showthrea...6#pid91506




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM
Gilfillan Brothers Car Radio?
Hi everyone,  Special thanks to Joe Rossi for tracking down this obscure radio and thanks to others who took up the hun...Antipodal — 08:15 PM
trying to identify this wire type
Here's one source for your wire of many. Take care and BE HEALTHY! Gary P.S. Can't get the right color you need? I ...GarySP — 06:40 PM
trying to identify this wire type
...and modern wire of the appropriate gauges and insulation V-rating (300V minimum, usually shown right on the wire) is ...morzh — 05:47 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
I have a question about this radio, is there anyone that has access to this radio that has an intact unmolested speaker ...captainclock1988 — 04:28 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Well what makes me confuse all of those companies is that all three of those companies (Setchell-Carlson, Stromberg-Carl...captainclock1988 — 04:21 PM
trying to identify this wire type
The red wire is rubber covered wire. The others are cotton braid over rubber often in colors or a tracer, also strand...Chas — 02:43 PM
trying to identify this wire type
Greetings Phorum members, Hope you can help me identify this type of wire in the photo I have attached.  I am not sure ...georgetownjohn — 01:53 PM
Philco 60 Squealing
All correct shields must be in place, all tubes correct no subs of any kind. Check any soldered, riveted ground conne...Chas — 01:24 PM

[-]
Who's Online
There are currently 6242 online users. [Complete List]
» 1 Member(s) | 6241 Guest(s)
Avatar

>