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Model 43 Alignment Issues
#5

(04-18-2015, 09:19 PM)Ron Ramirez Wrote:  
(04-18-2015, 07:02 PM)morzh Wrote:  Pointers do move.

Not when it's a Model 43, or the vast majority of pre-1939 Philcos - you have to move the dial scale while the pointer remains stationary. The scale must be aligned to the line to the left of 55 on the first band, with the tuning condenser fully meshed.

Thank you, Ron!

Well, yes, my dial scale was adjusted to the line to the left of 55 on the first band.  Yesterday, by tinkering and trial and error, I discovered the source of my "alignment" issues.

The trimmer on the klunky "trimmer/inductor" assembly connected to the top of the antenna transformer housing needed adjusting. 

Adjusting it to almost minimum capacitance resulted in:  1) no more "dead" spots on the dial; 2) perfect match between station frequencies and dial readings. What a relief!

I hope no one will find the following observations "stupid", so I will apologize to the pros in advance for that.  I am not a radio/electronics expert, only very interested in learning more about Philco restoration.

Anyway, that trimmer/inductor assembly was the source of earlier problems during the restoration also.  There were initial issues with buzzing, popping, etc. at various points on the low band.  After a lot of exploration and trial and error, I found that if I soldered a wire between the leads of the inductor portion of the assembly, to short it out, that the popping/buzzing problem disappeared.  I know this may defy logic, but it worked, and continues to work.  Just thought I'd put this out there in case anyone else encounters the problem.

Thanks for your kind attention and assistance!

Jim


Messages In This Thread
Model 43 Alignment Issues - by jhgrahamjr - 04-18-2015, 06:06 PM
RE: Model 43 Alignment Issues - by morzh - 04-18-2015, 07:02 PM
RE: Model 43 Alignment Issues - by Ron Ramirez - 04-18-2015, 09:19 PM
RE: Model 43 Alignment Issues - by morzh - 04-19-2015, 04:06 PM
RE: Model 43 Alignment Issues - by jhgrahamjr - 04-24-2015, 11:46 AM



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