[Hallicrafters] SX-101 issue

[Robert Sauvan]

Hi all,
I have been working on my SX-101 Mk 3A and have finished recapping the 
whole radio. I have a small issue that was occurring before I decided to 
recap the thing. When listening to a signal, (I pretty much just listen 
to cw), it will all of a sudden change pitch as if changing frequency. 
Im thinking it is in the BFO circuit. There are a couple of mica 
capacitors in that circuit that Im thinking might be the culprits.One of 
them is  560 PF 500v, and the other is a 10 pfd (N4700) ceramic. What 
does the N4700 mean? What would I use to replace that particular cap? 
Both of these caps are the flat rectangular style. There is also a 
resistor in parallel with that cap that has a wire wound around it on 
both ends. What would I use to replace that as well? Im not finding 
resistors like that anywhere. If anyone has any other ideas as to what 
the frequency jumping problem may be, Im open for suggestions.

Thanks-Bob-W0YBS