[Test-Equipment] Make your own coil dope

[J. Forster]

[snip]

Glyptal is more commonly used for that.
-John

==============

> ----- Original Message -----
> From: "J. Forster" <jfor at quik.com>
> To: "Discussion of Electronic Test Equipment"
> <test-equipment at mailman.qth.net>
> Sent: Friday, May 29, 2009 1:48 PM
> Subject: Re: [Test-Equipment] Make your own coil dope
>
>
>> Styrene is low loss at RF frequencies. Epoxy is higher.
>> You get better Q.
>>
>> -John
>>
>> ============
>>
>>
>>> Why not just use epoxy or such?
>>>
>>> Just curious what is special about the "coil dope".
>>>
>>> Thanks,
>>> Dave
>
>      Beside the electrical properties one important one is
> that you can remove the stuff easily. Coil dope is often
> used to lock in place coils which must be adjustable at some
> point. It is removable with common solvents where epoxy is
> nearly impossible to remove.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk at ix.netcom.com