Posts: 7,305
Threads: 270
Joined: Dec 2009
City: Roslyn Pa
If you have the choice try to get the code 123 it has a better mixer. The older sets use a #15 tube as an audodyne mixer where the code 123 has a 1A6 pentagrid mixer. Better gain and less finicky. There seem to be several service bulletins for the audodyne circuit. The library has the diagram for both.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
Messages In This Thread
RE: 38, 38 A, 38 B - by Radioroslyn - 06-05-2019, 06:36 PM
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
Philco 42-345 Restoration/Repair
|
| Ok MrFixr55,
I have tried the DeoxIT D5 on the band switch and even though it has relieved the tension I felt when turn...osanders0311 — 11:11 AM |
|
Part numbers to model cross
|
| Is there a reference somewhere where you can punch in Philco part numbers and see what models those parts were used in?Jim Dutridge — 10:17 AM |
|
Philco 42-345 Restoration/Repair
|
| Hi OSanders,
Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM |
|
5U4 vs 5Z4 tubes
|
| I think that RCA and GE introduced metal tubes in the USA in 1936. I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM |
|
Philco 42-345 Restoration/Repair
|
| Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
|
5U4 vs 5Z4 tubes
|
| A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM |
|
Philco 42-345 Restoration/Repair
|
| Thanks Rod,
"When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM |
|
Philco 42-345 Restoration/Repair
|
| RodB
:beerchug:Vlad95 — 10:22 AM |
|
Philco 42-345 Restoration/Repair
|
| Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM |
|
5U4 vs 5Z4 tubes
|
| Well this is a Hallicrafters SX/9 circa 1936.
No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM |
|
Who's Online
|
There are currently 1665 online users. [Complete List]
» 1 Member(s) | 1664 Guest(s)
|
|
|
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
