[TowerTalk] Which Balun with the TH7DXX

[Jim Thomson]

Date: Tue, 23 Jul 2013 00:54:40 +0200
From: "Peter Voelpel" <dj7ww at t-online.de>
To: <towertalk at contesting.com>
Subject: Re: [TowerTalk] Which Balun with the TH7DXX

A solenoid winding made of coax is more effective then those 4 wraps.
I use SCF12-50 Cellfex to wind my choke baluns.
30 turns on a pvc tube of 4-5" diameter do the trick (2000 ohms at 14MHz).

73
Peter

##  are u sure  30 turns of 1/2 inch heliax is gonna work on 20 M ?   That seems
like one helluva lot of turns for 20m.   Is it optimized for 20 M ?   How do you know
its  2 k ohm Z ? 

Jim   VE7RF