Erecting a full-sized 40 meter vertical antenna can present a challenge if you live on a small urban lot or are subject to HOA or other deed restrictions.
In this well-paced, informative video from Colin (MM0OPX), we see how "linear loading" on a short mast can deliver almost the same performance as a full-sized 1/4 wave vertical antenna.
Like all 1/4 wave verticals, be sure you have a decent ground radial system to complement the vertical element of your antenna.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=v6up_Yc6I1o.
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).
Here are a few comments from Colin (MM0OPX):