[TowerTalk] [Bulk] 1/4 wave vertical question

[Bill Coleman]

On Apr 18, 2010, at 9:27 AM, Dan Schaaf wrote:

> I am building a 1/4 wave vertical for 30 and 40 meters with a coax trap.
> In order to do the initial measurements, can anyone tell me if the 30 meter length includes the trap or if the 30 meter length stops at the bottom of the trap or in the center of the trap?

In my recent experience in building trap dipoles, you can consider the 30m length as stopping at the trap.

You can find the articles on building trap dipoles on my blog below.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Web: http://boringhamradiopart.blogspot.com
Quote: "Not within a thousand years will man ever fly!"
            -- Wilbur Wright, 1901