I'd like to have some specs on the CTC LS-3 iron-slug coil that was popular
in the 60's and 70's ham equipment. The diameter and value in uH as it was
sold is really all I need. I've searched the internet for CTC coil info and
can only find C.T.C., Ltd., in Hong Kong mentioned. No web site, but it
appears C.T.C., Ltd. is a much newer company even though they do make
inductors. Thanks for any help.

I*believe you could have a coil made by Cambion Thermionic Corp.* They
still excessed, but*current part numbers are not the same.*They have
droped The Thermonic from their name. The "03" is a indicator of
inductance value, but depends on coils size and exact type.* Just a hint
and hope it helps.*73 Tom

In article , "Jack"
wrote:

I'd like to have some specs on the CTC LS-3 iron-slug coil that was popular
in the 60's and 70's ham equipment. The diameter and value in uH as it was
sold is really all I need. I've searched the internet for CTC coil info and
can only find C.T.C., Ltd., in Hong Kong mentioned. No web site, but it
appears C.T.C., Ltd. is a much newer company even though they do make
inductors. Thanks for any help.

Jack,

Here are some more shreds and shards of information. According to the 1959
Allied catalogue there were 5 different "LS3" coils sold with differing
catalogue numbers. Each is advertised with a paper-based phenolic core and
the slug for the LS3 is described as "a larger slug" (as opposed, I suppose
to a smaller iron slug on the other coils in their line). No L value is
mentioned in the 1959 or any other copies of the Allied catalogue that I
have. Each of the five LS3s is described with a coil that is 1 1/8' x
3/8-inch diameter. They produced the following LS3 coils: 1 MC, 5 MC, 10 MC,
30 MC and 60 MC. If I knew the wire size I might be able to come closer to
deducing an L value.
Good luck.

73 es ZUT Vern W9STB