The Half Square Antenna - End Fed 

Well here is yet another neat antenna to build. Late this afternoon I was reading about EFHW antennas and, voila, up pops your video. I’ll try it tomorrow. Tnx.

Awesome qsos on this one

You have definitely figured out a way to turn the work trip into a vacation Nice job!

Thanks Walt! Great job and well done on showing how well this antenna does on air.

Outstanding results. I keep coming back to this antenna in my design searches but never come across folks actually showing results. Thanks for sharing.

Back in the day, I put up an 80m half-square corner fed across the open end of Ohio Stadium. Flat top was probably 130' above the ground. This was after football season and in the dead of winter so nobody at OSU complained or even noticed and this was before the rework of the stadium when the ham club had to move. Best 80m antenna I've ever used. Working northern EU from Ohio at our sunrise, YB long path with 100 watts pileup buster. Amazingly simple wire antenna.

Glad to see you try this. I knew you would have great results

Mahalo (thanks) from Hawaii for the vid and the links.

That has to be my antenna when I move to a house with backyard :) seems like a great find!

I have a few of Tims antennas and they are high quality and he is great with customer service. I got them off eBay.

I love that ur doing this shit in other countries while traveling for work. Walt keep on walking and talking ur beautiful hamness!

Walt if you read Les Moxons book 'HF antenna for all locations' he shows you this antenna in this configuration, if you can find a copy it well worth reading, i was given mine in 1982 by my friend who taught me CW when i was just licensed at 16 years old !! Great video as always, best 73 from France.

Your handwriting is ridiculously neat. :)

Wow, I need some time to experiment with this with my own efhw. Really great use of fellow youtubers to pass on the great work too. Awesome Walt, well done

ur antenna ideas are great & I really enjoy seeing how u do it; keep up the great work & Happy Holidays from TN! 73 de WA4ELW 🇺🇸 dit dit 😃

Another cool antenna, Thanks Walt.

Thank you! I have been looking for a visual for this layout and wondering if you needed a counterpoise!

Well, well now I watched it. I‘m glad you like it as well. 73 de HB3XBL 👍🇨🇭

Also known as a "Pi" or "inverted U" antenna.

great video - enjoying the channel. Tim N9SAB builds some great stuff, I own 2 of his OCF dipoles, one for 10-40 and one 10-80. I own a 10-40 end fed from Tim. All great I also have a QRP Carolina windom and one of the QRP end fed, just great stuff. Thanks.

Great video. I"m going to have to try this.😁😁

Great antenna information Walt! Thanks for the demos. That half-square is something else! I might try experimenting and modifying my existing rain gutter antenna setup to emulate this design. It currently resembles an inverted-L, about 10-ish feet vertical and 40 feet horizontal. Also, great to see you on the livestream this week with the group! 👍📻⚡️Cheers & 73, Tom - WA7FLY

N9SAB is an Indiana, USA call sign. I like knowing some of the regions involving amateur radio.

Another option, you could flip the antenna upside down, so that the horizontal portion is suspended just above the ground, and two verticals are held up by trees or poles - then you could get the 50 ohm connection at the ground level instead of up high

Came across your channel by accident, love the content m0udb

I am planning to feed a half wave through one leg to the traditional feed point. I have that same green pole too.

Ciao Walt, tnx for qso !! 73s de IU3BTY

Nice going

Very interesting video, Walt! 73, Walt NE4TN (TennTennas)

Hey, Walt! I know this video is old AND that you're very busy with stuff right now, but I came back to it remembering the way you were supporting the mast here: what is that thing you've got screwed into the lawn called?! I've had trouble getting the right keywords to google it!

I have to make one off those one day…👍🏼

Instead of using a coax spiral as shokes, directly behind the transformer you better let 2-4m coax laying on the ground, an then doing the spiral shoke. Never less, better use a ferrite shoke with 2-4m coax laying on the ground between transformer and shoke. In fact, the radiator geometry makes a very big difference on the radiation pattern. And that's no secret and not new. Inverted V geometry is really not recommended. Inverted L is perfect for all around performance 40-20-15-10m. Inverted U shape make it more a DX performer on 15-10m. All over all the EFHW is a simple and good performer, probably the best for portable outdoor operations. Your SWR should be lower. A well tuned EFHW give a SWR of max 1.5 and lower on all appropriate EFHW bands. 73 👍👍

great video nice ideas 73 from kb2uew

nice experiment and results.. that's a keeper for future adventures.. thx for sharing.. k0klb

How did you attach it to the tips of your poles?

Hi Walt, Pete from the England /Scotland border here. With directional antennas, does the signal follow great circle routes? I'm asking before setting up an antenna at home. M7DXE

Good job! I have used half squares on 80 meters. Excellent antenna if you can not get a dipole up a half wave. That’s hard to do on 80! In fact even getting a quarter wave is sometimes not easy. Did you see my half square video?

Hi great video really appreciated. I have a question regarding the two greens poles. Are they metal poles or which material is it? Thanks and 73 DL1JH

Nice video Walt ! Would you have a 4:1 balun around? If so, I’d ask you to try building a delta loop. Everyone says these are great and quiet antenna 73

I wish my license would allow me to transmit on 20m

i feel bad for folks who trust reports. hahhaha everyone is 59 59 plus hahha

Walt, What do you usually use for your feed line to your radio?