[Test-Equipment] Make your own coil dope

[Richard Knoppow]

----- 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