The price of wheat is certainly going up. The largest mica value I have
is 5100pf. I don't see why an Orange Drops wouldn't work, though.
Nothing special about the circuit, for sure.

ablebravo wrote:
have an 'audio filter' package that sits between the output of 1rst
audio 6c5 and a tone control. shot; needs rebuilt. 1940 national.

am looking at mouser for suitable chokes. there are waaaay too many
choices... vintage electronics did not have any suitable....

what is best generic part for this application? ie i need to narrow
down 100's they offer to what i need in some way. was looking at
fastron epoxy mcc/n series. can't find the exact values, either. can
get w/in 20-30 MH. how critical?

schemo gives two 'filters' (choke/inductor) valued at 175MH and
360MH. also in the package are two mica caps .006mfd and .011mfd.

the values seem hard to find for micas -- is 'orange dip' substitution
for this ok? i can turn up these micas up on mouser but at $6-25 (!)
each, depending on specs.
thx much all help.
ab