Cheap 40 m high-gain aerial...the half-square

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This is post 2358 in a continuing series of simple ham radio antennas.

If you want a simple, inexpensive 40 meter antenna with some gain (about 3 dBi), please try the "classic half-square antenna."

In this video, Callum (M0MCX) discusses the theory and construction practices of this antenna.

I've built several of these half-square "aerials" for both 20 and 40 meters, and they work very well broadside to the vertical array.

Callum does an excellent job of outlining the pros and cons of this easily-made antenna.  Here are few of his remarks:

I have not built a half-square yet - but this looks a cracking little antenna, particularly if you might have appropriately spaced trees in your back yard? 50 Ohms means no complex tuning, just coax to your antenna. Here's the Verticals I discussed: Background: My name is Callum, callsign M0MCX. The whole DX Commander brand was a bit of an "accident" since I already have 2 day-jobs (I own a couple of tech companies). Everything I make, I use myself. My products are the answer to *my* problems so I made stuff that worked for me. I don't make gear that doesn't work and although I'm considered not short of a few dollars, I love the idea of making things economical, easy to build and as efficient as you can achieve on a tight budget (hey, I hate wasting money!). My store is here: and I ship (almost) worldwide. Russia seems to be too expensive however EU, USA, Canada and VK land still make my products economical when you include shipping. Hey. Did you know that you can help the others here by contributing your time to closed caption subtitles here: Enjoy your radio folks. Good luck. Callum. M0MCX. DX Commander Founder.
Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


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