[TowerTalk] Antenna in attic

[Floyd Rodgers]

 Keep in mind these days many roofs have radiant barrier which is not good for rf inbound or outbound. Also pay notice to ductwork which is also metallic or at least metalized ducting.
    On Monday, May 16, 2022, 08:52:25 AM CDT, W7TMT - Patrick <w7tmt at outlook.com> wrote:  
 
 AC0C built an amazing array of directional antennas in his large attic. He won contests with them. 

All the details and guidance on how to approach such a project with so many variables are here: 
https://ac0c.com/main/page_prior_antennas_stealth_antennas.html

He also had a detailed article in NCJ about the multiband beam in the attic. There is a link to that article on his Downloads page here:  https://ac0c.com/main/page_downloads_downloads.html

73,
Patrick, W7TMT

-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Brad Anbro
Sent: Monday, May 16, 2022 05:32
To: towertalk at contesting.com
Subject: [TowerTalk] Antenna in attic

Hello all,

A new acquaintance of mine, who is a newly licensed ham, would like to install an HF antenna in his attic. In my 40+ years as a ham, I have never installed an HF antenna in an attic. I have installed many wire antennas outside in the open air, but none in an attic. I am guessing that he would like to end up with a dipole for 20 meters, so that he can get on HF and make a few QSOs.

I am assuming that the antenna should be in the clear and as far away from the wood as possible. Is that correct? Also, is the required length appreciably different than a dipole installed outside in the air (468 divided by the frequency in MHz)?

Thanks for any help with this!

73 de Brad, N9EN

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk