My DIY 20-40 meter air wound coil


Here's a nice accessory for radio amateurs using short length vertical antennas.

Mcso911 takes us step-by-step through the design, construction, and testing of an air-wound coil that permits 20-40 meter operation from a single vertical antenna element.

If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=DLTKTnn5DK4

This is post 2878 in a continuing series of simple ham radio antennas.

Here are some general comments from the author:

My version of a clone Wolf River Coil with parts laying around the shop. Parts 1- 7 inch piece of 1.25 sch40 PVC 2- 1.25 inch PVC caps 2- 1.5 inch 3/8x24x1.5 bolts 4- 3/8x24 nuts 8- 3/8 washers 1- 3/8x24 coupler grommet strips from McMaster Carr. part number in video Gator clip form McMaster Carr 10 inch piece of wire. wire ring terminal 18 gauge steel wire. Home Depot, Ace Hardware, Lowes etc etc
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Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

 

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Thank you for visiting my Amateur Radio Blog. I value your comments and suggestions. For Amateur Radio Antenna Topics and Discussions, stay here. For Amateur Radio News and Trends, please visit my news site at https://bigislandarrlnews.com.
Aloha es 73 de Russ (KH6JRM).

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