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[TowerTalk] W2DU Style Balun

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Subject: [TowerTalk] W2DU Style Balun
From: (Bill Coleman)
Date: Wed, 6 Feb 2002 15:47:37 -0500
On 2/5/02 1:37 PM, ABowenN4OO at wrote:

>How many beads of what type material are needed to construct a choke balun, 
>using RG303, for a balanced antenna operating 40M-10M?


>How many beads for the same thing operating from 80M-10M?


Use an FT-240-77. Wind the coax on the core. For a 50 ohm feedpoint, 
about 6 turns should be adequate for 40m-10m. 8-9 turns for 80m-10m.

This isn't the W2DU design, but the W1JR design. Same principle, 
different execution.

Bill Coleman, AA4LR, PP-ASEL        Mail:
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