[NJARC] Re: Philco 70 Question Re: AC/DC & More

[radiomf at comcast.net]

That was celluloid. It probably was used in the original manufacture and can be discarded. I would not use paper, but maybe some wide scotch tape. but that would be slippery and make winding more difficult.either leave it be, or remove it and not replace it.
-------------- Original message -------------- 
From: <oleradiogal at verizon.net> 

> Ok - coupling...resonant secondary - that all makes sense. Thanks! 
> 
> Yes, 64 turns looks about right - I stopped counting at 50!! So, that makes 
> 20.1' of wire plus several inches for the leads. Lots of wire in such a tiny 
> space. 
> 
> Here's my next challenge: The plastic insulating shield between the coils is 
> yellowed and badly split (probably contributed to the open circuit). I want to 
> cut a strip of heavy paper to replace it (plain notepad). How does paper stand 
> up to 250V of B+ ? Should I be considering a different material?