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450 Laying On The Ground?

Dec 16th 2018, 19:57


Joined: Aug 30th 2010, 01:09
Total Topics: 0
Total Posts: 0
Hi All,

I have a Dipole that is used as my primary. It's height varies based on the weather conditions (windy I will lower it a few feet, No wind, I will crank it up some).

The maximum height is 33'. The Feedline is 33' of 450 ohm into a 1:1 balun.

When I lower it, I can have around 10' of the feed lying on the ground.
I understand the SWR will move, but that's fine as the tuner will take care of that.

What I am wondering is, when it does lie on the ground, would I lose any effectiveness of the antenna - understanding that radiations will change due to a lower antenna??


Dec 17th 2018, 13:44


Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
AUG 2018 - QST (PG. 41)
A Novel Approach to Using Window Line
Author: Portune, John, W6NBC
Dec 19th 2018, 00:30


Joined: Aug 30th 2010, 01:09
Total Topics: 0
Total Posts: 0
Thanks John,

Sorry for the delay - I have been testing you're work.
Boy, as it made a huge difference or not !!!!

I just played the excess 10' on the ground and the Feed Line now drops directly to ground where as it used to be at a 45 degree angle.

I now hear and send a lot stronger, but I think that's due to the feed line dropping at right angles to the dipole.

Thanks again John.


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