Posts: 7,297
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
Pin 2 of the 7C6* though a cap and then pin 3 on the 7C6. Next will need to set the sg to produce a rf signal. Set frequency range on B and adjust dial for 455KC. Turn up the attenuator Apply signal to pin6 of the 7B7 closest to the 7C6. Do like wise with the other 7B7. Next *pin 2 of the XXL closest to the IF transformer and pin 6 also . If all is well you should hear a 400cy tone when connecting to these points. *Be careful some of these point have HV connected to them.
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
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
Need Help to ID this radio 11 tube Philco
|
Thank you.
I went to your online library and found 2 schematics.
I will download and compare to components!Ken D. — 06:31 PM |
Need Help to ID this radio 11 tube Philco
|
It is a 16B tombstone.morzh — 06:13 PM |
Zenith H725
|
David - sorry, I reread your post and finally saw THD - now the % figures make sense. Thanks for explaining.
The PSU...EdHolland — 06:06 PM |
Need Help to ID this radio 11 tube Philco
|
Hi Everyone,
New member but have been reading this for awhile for tips!
Vaccum tubes were before my time so bear with ...Ken D. — 06:03 PM |
My Philco 37-116 Restore
|
Thank you MrFixR55, I appreciate your comments very much. I do not detect much hum if any so I will be staying with the ...dconant — 05:15 PM |
My Philco 37-116 Restore
|
Hi DConant
Yes, you can replace chokes with resistors. You do stand the risk of increased hum. the solution is to inc...MrFixr55 — 04:23 PM |
Zenith H725
|
1.7-3.9 %, a modified Sine wave inverter is around 25%. Most generators from big box stores run 10% at a 50% load. What ...David — 04:06 PM |
My Philco 37-116 Restore
|
I am having a heck of a time doing the alignment on the AM band. I can't seem to dial in the 1500 KC oscillator. I can h...dconant — 03:35 PM |
Zenith H725
|
David - I think I understand but what units are you discussing (Low of 1.7, high of 3.9)?
Budget constraints for Ham ...EdHolland — 01:43 PM |
My Philco 37-116 Restore
|
You're doing great.
I wish I could be more involved, but my mind is right now preoccupied with the reason I am here in ...morzh — 12:21 PM |
Who's Online
|
There are currently 727 online users. [Complete List] » 2 Member(s) | 725 Guest(s)
|
|
|

|