5/8 Wave 10m Vertical Antenna Build
If you have an old CB (11-meter) 5/8 wave antenna, you may be able to convert it to 10 meter use.
In this video, Ian shows us how to make a 5/8 wave 10 meter antenna from an old CB antenna and a few easily obtainable parts.
If you can't see the video, please insert this title URL into your browser search box: 5/8th Wave 10m Vertical Antenna Build - YouTube
Here are some comments from Ian:
Further development of a design from the website below where a commercial 5/8ths wave CB antenna is reverse engineered. This enhanced model is tuned specifically for the 10m amateur band and also adopts a ferrite choke, which is an improved option over the air-wound choke which is also shown in the build.
The parts for this simple DIY build probably already exist in your shack? If not, they come to about £5 for the air-wound choke model, or about £10 if you go for the ferrite choke model. A list of parts:
Main Antenna = 3.5m RG58 coax + 3.25m of insulated wire
Air-Wound Choke = 3.6m RG58 coax (or) 9 Turn Ferrite Choke = 73cm RG58 coax (+ the ferrite) - a 12 Turn on a 52 or 61 core will use a little more coax, say 1m in total.
Matching Stub = 71cm Westflex 103 coax
Original CB antenna article: https://radioaficion.com/cms/sirio-ga...
G3TXQ chokes: http://www.karinya.net/g3txq/chokes/ (follow the links mid-page for detailed and updated analysis for specific ferrite types)
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Part two of this 5/8 vertical series can be seen at: https://youtu.be/5n16SfU5kco
0:00 Introduction
0:30 Theoretical Antenna Design
4:10 Practical Antenna Design
6:20 RF Choke Options
8:06 Antenna Build
11:02 Antenna Testing
12:29 Summing Up
Thanks.
Ian.
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Part 2 of this project can be found at:
https://youtu.be/5n16SfU5kco.
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).
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Aloha es 73 de Russ (KH6JRM).