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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Instead scopes
Date: Mon, 02 Sep 2024 02:48:45 GMT
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On a sunny day (Sun, 01 Sep 2024 13:32:59 -0700) it happened john larkin
<jlarkin_highland_tech> wrote in <ncj9djtjao9gsvtojue9q9jph1ro1gl8or@4ax.com>:

>My inductor is cheap and simple and works.
>
>If I get a gigantic order, I'll have a coil winding company make them
>and retire the Sharpie.

Some time ago I mentioned ceramic coil formers with grooves to you.
There were some in the mil transceivers.
It fixes the turns in position and diameter
 https://www.surplussales.com/Inductors/Ind-SlugTu/Ind-SlugTu-4.html
  ebay has some too I think

You could have some made if you sell thousands, any pottery;-)

I had some nice big ones with silvered wire in my 250 W linear in school days.