[TenTec] Antenna help

Scott Harwood scotthsr at earthlink.net
Mon Dec 29 14:40:05 EST 2014


I wrote an article in the November 2006 QST that covers a lot of what you are asking.  You can get a copy on the ARRL website.


Scott K4VWK

-----Original Message-----
>From: Curron <kb3drw at msn.com>
>Sent: Dec 29, 2014 1:50 PM
>To: "tentec at contesting.com" <tentec at contesting.com>
>Subject: [TenTec] Antenna help
>Need some help folks... 
>I would like to get some input on building an 80 meter sky loop
>antenna that I will use on 80 and other bands with an antenna tuner. I have
>some nice tall pine trees to run the corners to and I plan on joining the loop
>to the house with 450 ohm ladder line. Just under the edge of the house I will
>install a balun and bring it into the house with low loss coax. Please make any
>comments or offer any advice you can. I am hoping to learn from your
>experiences. Some questions I have are:
>- What kind of wire should I use for the
>loop antenna
>- What type of rope that will hold up to
>the UV and time (so much just falls apart these days)
>- What balun, 4:1, 1:1 ?
>- Is 450 ohm feed ladder line the best to
>use? This part will be about 80 feet long. Will this length be a problem?
>- Has anyone ever had any issues using
>delrin for the insulators? Is there a better?
>- I am thinking about placing a screen door
>spring on each corner to allow the trees to sway in the wind… anyone ever tried
>that. Or should I just counter weight to opposing corners of the loop?
>- How’s the best way to protect this
>setup from lightning?
>Thanks in advance for any help!
>Don kb3drw
>TenTec mailing list
>TenTec at contesting.com

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