Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Philco 91,126 code oscillator coil 05985
#5

So far so good,but before I start tuning the philco w/the transistor set, btw,very tricky!And yes you're correct IM freeqency udjust at 260 Kc for Philco 91. Looking at the Riders wiring sceme,the prim/inner tube winding states 5 ohms-my reading is 16 ohms,lug#4 and lead wire from end of the winding to plate of 36 tube(B+).The outer tube windings lug#3 between trimmers 18 +23 and lug#5 to tuning cap4 reads 5 ohms.Maybe misprint at Riders wirring-should be reversed?? Prim/inner tube=15 ohms,Sec./outer tube 5 ohms ????Well,this set is pouring some tunes out now.Also rewinded the coil #12.Same task.25 turns,38awg wire,clockwise winding start at lug 3 to lug 1.Rest of the coils at this Philco 91 circuit test as they should by Riders wiring sceme.
If all the Philcos outthere needs same treatment,then God bless us all.
Anyway thank you bunch for holding my hand to go with this !!


Messages In This Thread
Re: Philco 91,126 code oscillator coil 05985 - by sables2 - 11-26-2011, 06:22 AM



Users browsing this thread:
[-]
Recent Posts
Philco 46-480 Electronic Restoration
OOPS!! if there is a "flag" running up the side of the tube that touches the shield, then yes, a shield belon...MrFixr55 — 10:03 AM
Philco 46-480 Electronic Restoration
Thanks for pointing out that shield! I will try to find out where else it may belong. I simply installed it back where i...jrblasde — 10:02 AM
Philco 46-480 Electronic Restoration
Very nice job. A real contrast between how easy the main chassis is to work on, vs how tightly the RF chassis is packed...MrFixr55 — 09:31 AM
Philco 46-480 Electronic Restoration
After sleeping on it, I believe the issue is that I may have forgotten to install a ground connection between the RF cha...jrblasde — 09:21 AM
Refinishing Ideas
Hi Poulsbobl, I think that you could get away with it.  In the Philco Library, there is a parts listand specs for sp...MrFixr55 — 11:54 PM
Philco 46-480 Electronic Restoration
The sleeving for the transformer arrived early, so I went ahead and finished reassembling. The chassis looks far better ...jrblasde — 10:15 PM
Philco 610B oscillator wiring
I don't know what you are referring to when you say "tube cathode ground". Ground is a connection to the chass...RodB — 05:56 PM
Zenith H725
Good points, Arran. I haven't encountered this problem with any other radio (all earlier vintages), so am learning here....EdHolland — 05:32 PM
Zenith H725
Ed; One thing that I will say about these is that Brand Z was considerate enough to make these mica caps easily acces...Arran — 02:34 PM
Philco 610B oscillator wiring
Do you know what run # your chassis is? It took me a while to find what you were basing updates/modification on as I did...Radioroslyn — 07:34 AM

[-]
Who's Online
There are currently 704 online users. [Complete List]
» 3 Member(s) | 701 Guest(s)
AvatarAvatarAvatar

>