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N5CM_John

Joined: Wed, Sep 6th 2017, 16:13 Roles: N/A Moderates: N/A

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Topic Author Posted On
Antennas and trees WA6CSM on 17/9/19
I use a slingshot with a 2-ounce lead egg sinker and 15-pound test monofilament line. I've been able to get lines up 100 feet in my pine trees using this method. After I shoot over the tree, I tie some heavier nylon trotline to the monofilament and draw it back slowly over. I may use the nylon line as a support or, or I may pull some dacron rope back over with the nylon line. I've used this approach for quite a while, and it works.

73, John N5CM
Windom antenna. How to design the choke. N1AUP on 14/2/19
In the 23rd edition of the ARRL Antenna Book on page 10-7, there is a reference to the "Carolina Windom", which sounds like what you built. For their 80m antenna, they used a 22-foot section of coax below the feed point balun and inserted a 1:1 choke at that point. The feedpoint balun was a 4:1 voltage balun which, per the Antenna Book, does not act like a current choke. So, the 22-foot section of RG8X between the 4:1 voltage balun at the feed point and the 1:1 choke 22 feet down, radiates and fills in nulls. I have an old Carolina Windom (10m-40m) that I resurrected in Februaru 2018 after my 10+ years QRT. It is my only "store bought" antenna and it works fairly well. I use it with a tuner in the shack on all bands, 10m through 40m. I've worked a lot of states and DX with that antenna on CW. I would think the 1:1 choke down on feed line would be a good idea.

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