If you need a bidirectional wire HF antenna with significant gain, then please try this Half Square Antenna project from Callum, The DX-Commander (M0MCX).
Callum does an excellent job of explaining the design and functionality of this popular HF Antenna.
The Half Square is one of my favorite antennas for the upcoming ARRL Field Day during the last full weekend of June.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=llEV35ZZvKQ
Here are a few comments from Callum (M0MCX):
Let's unlock the the Secrets of the Half Square Antenna - How to build a half-square antenna and let us look at the gain structure. Maybe a 40m band project. Ideal if you have some trees maybe? Callum.
More videos:
▶️ 
• Antenna Modelling Antenna Modelling
▶️ • Tips and Tricks Tips and Tricks
▶️ • Antennas Antennas
▶️ • Live Streams Live Streams
▶️ • Commander World My Stuff
▶️ • Foundation Training Ham Radio Training
• Antenna Modelling Antenna Modelling
▶️ • Tips and Tricks Tips and Tricks
▶️ • Antennas Antennas
▶️ • Live Streams Live Streams
▶️ • Commander World My Stuff
▶️ • Foundation Training Ham Radio Training-----------
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).
