Ian Smith wrote:
I have a Heathkit IG-42 signal generator. The RF choke coils on the
power supply need replacing,however I can find no reference in the
manual as to their value. Can someone help with values, substitutions
or are the even necessary.

What makes you think they went bad? As I recall, they are made with huge
wire, maybe 18 ga. How can that fail?

If it really DID fail, try replacing it with a Corcom EMI filter. Much
more effective than the original filters, and it meets current leakage
ratings (which the original bypass caps probably do not).
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."