A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas.
5/8 Wave 10m Vertical Antenna Build
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How to reengineer a commercial 5/8 wave CB antenna for the 10 Meter Amateur Radio Band.
"Ianxfs" takes us step-by-step through the design, reconfiguration, construction, and testing of an adapted CB antenna dedicated to the 10 Meter Band.
If you can't see the video, please check insert this title URL into your browser search box: https://www.youtube.com/watch?v=eboJV6rY4a4
Here are some comments from "Ianxfs":
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)
This is one of many amateur/ham radio related videos on my channel. Please feel free to browse 👀, like 👍🏻 and subscribe 🔔 (it's free!), remembering to hit the bell so you’re notified of new videos as soon as they're published and you don't miss out.
Part two of this 5/8 vertical series can be seen at: https://youtu.be/5n16SfU5kco0:00 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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Aloha es 73 de Russ (KH6JRM).