[Boatanchors] Ferrite Choke

[James Liles]

Hi Keith:

Simplest way is to determine how many turns of coax that are recommended for 
the antenna/band.  Then wrap it and measure the inductance.  Then slip a 
snap on choke onto a piece of coax and measure the inductance with and 
without the choke.  Now you know how many to install.

I use a series of 6 TDK ZCAT3035-1330 snapped around RG8 to simulate 12 
turns of coax.  They add about 3uh per core.

Good luck and a great day to you Keith.

Kindest regards Jim K9AXN

----------------------- ORIGINAL MESSAGE -----------------------------------
Message: 1
Date: Fri, 13 Jul 2012 13:13:20 -0400
From: "Keith Densmore" <kmd at xplornet.ca>
Subject: [Boatanchors] Ferrite Choke
To: <boatanchors at mailman.qth.net>
Message-ID: <380FD25D51E9464DA026C471D633FE78 at keith3dc125020>
Content-Type: text/plain; charset="iso-8859-1"

Greetings Listmates,
Just finished installing a off center fed dipole here and I thought I had 
enuff coax to wind a choke but alas, no exta coax.
Does anyone know where I can find the snap on ferrite chokes that would fit 
RG 213 ??

Thanks, 73,

Keith ve3ts