[AMRadio] coils

Brett gazdzinski Brett.gazdzinski at mci.com
Sun Jan 8 21:33:42 EST 2006

I don't know.
I had no problems with kinking, and I think the stuff I used was thick
They make springs you slip over the tubing to bend it without kinking, but I
did not need it.
The more copper, the less resistance, so try the thick stuff.


-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Edward B Richards
Sent: Sunday, January 08, 2006 8:46 PM
To: amradio at mailman.qth.net
Subject: Re: [AMRadio] coils

Hi Brett;

I am going to wind a pi section tank coil from 1/4" copper tubing
tomorrow. Mine will be 4" in diameter and 3" in diameter. Which tubing is
best (no kink) thick or thin? Thanks.

73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home of the Air Force 1 pavilion

On Sun, 08 Jan 2006 18:48:57 -0500 Brett gazdzinski
<Brett.gazdzinski at mci.com> writes:
> If it does not need to be real small, one way to get a good coil 
> is to wind one out of copper tubing.
> Home depot sells various types, small/thin, bigger and thicker...
> I made the pi net tank coil for the pair of 4D32 rf deck out of 
> copper
> tubing, 
> I soldered big wire terminal lugs (the crimp on type) on the ends of 
> the
> coil and 
> bolted it to large ceramic standoff insulators.
> Here is a link to a picture:
> http://wa5bxo.shacknet.nu/N2DTS/new%20coil-a.JPG
> My thanks to wa5bxo who still has my pictures up!
> The wine bottle in the picture was used to wind the tubing on.
> The home brew receivers are in the background...
> Brett
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