Excellent,  thank you! Too bad it took so long for YouTube algorithm to figure out I was on the lookout for it.

So for those coming along and wondering about how well this works, I can tell you it does. It really does. That said,  I spent a lot of time going over this video and the other xm240 video from Steve to grasp what was being taught. I am not too proud to say I had to listen to these videos several times...there is a lot of information and no Fluff...quite a nice change from some typical 'amateur radio vids' telling you how to program a Chinese 2m rig. I digress.

In the end, I replicated what Steve had on offer here for my 40m yagi at 72 feet-complete homebrew. I have a lovely, but steep, 'real' R dip, and my tuned reflector above the dip- close to 3 s units gain. Yes, 18db...and I am being conservative because I can hardly believe it myself. Real world tests will confirm, and I will update here if I see otherwise. The sweet spot is around 7064, and between 7040 and 7110,  I have over 3 s units gain-both sides of the U bottom. Measured numerous times using a 0 dbm level signal 1/2 a km away from the antenna...not scientific, but results were repeated numerous times.

Anecdotally, I tuned the afternoon southern Net--all this in the midst of another aurora burst and broad daylight- so typical this time of year in Yukon, and heard and worked stations I could have only 'presumed' were there that time of day. Crazy.  I have tamed my swr to about 1.5 or better between 7.050 and 7.245. If I was an ssb guy, Id be sitting in gravy...I work mostly cw... I could have tweaked more, but my hinge base arrangement needed more attention due to the up and down...for now, I am thrilled.

Many thanks to Steve for putting this out there. I am sharing it with anyone interested in yagi design and tuning.

73

Scott VY1CO

I really like this video. The idea of showing exactly how the physical changes to an antenna affect its performance are fascinating to me. I am considering getting my ham license just for that reason.

Steve: Thanks for this. I have been puzzling over much of this (mostly with tuning 2-ele quads) for decades, and this is a real help. --NT0Z

Amazing presentation. Very understandable.  You have the unique talent of instructional organization with a clear voice.  I love learning anything involving transmission line theory.  It's absolutely fascinating and I've learned more about tuning parasitic elements in five minutes than I ever knew existed.  5-stars.

Outstanding as usual Steve, thank you. I have been experimenting with 40m 1/4 wave vertical paratisic array antennas for about year now. A few months ago I built a phased parasitic 40m 1/4w array with a reflectors and directors (6ele). This video is a big help on understanding and improving that.

Thank you! Just what I've been searching for in tuning my home brewed 6M 4el yagi.

I really like the paper-hand reveal technique. Great video and info as well, thank you

Very clear Steve, you're a good teacher!  The little antenna in your shack brings it to life.  Cool!  73, Gary  ZL2iFB

I have had more fun the last couple weeks trying to replicate some of these results…and I’m getting there! The nano van has shown my Real R point to be much higher on the 40m yagi…great videos.

I do comms for volunteers doing public safety operations in wild country. Mainly high band VHF. Sometimes they have vehicles but mostly all done on foot: a half-wave dipole is mounted on rucksacks. Simple improvisations that a non-technical person can do to improve comms are gold-dust! Every couple of dB is worth it. After watching this video, two things occur to me.
1. User on foot using half-wave dipole. Helper holds walking pole (Aluminium tube adjusted to 5% longer than dipole) parallel to dipole, 0.2 wavelengths from the dipole, on the side opposite the station called. (Is electrical continuity between the sections of the walking pole an issue?)
2. User with vehicle (with handheld radio and no vehicle fit). The flat metal electrically independent side of the vehicle faces the station called. The user holds the dipole antenna parallel to and 0.2 wavelengths from the side of the vehicle. (A van door might provide a smaller reflector.)
- Thoughts anyone?

Thanks for the video. I just pulled my 4el yagi down. I’m going to adjust the elements thru a vna vs just using physical measurements. It’s little Sirio. So I’m going to de tune all elements and match and start w the reflector. Should be a fun time. I hope I absorbed something from your video. At the very least it will be awesome seeing how my adjustments affect the readings. Great learning experience for me. I’m pretty green behind the ears on this topic. Also trying to learn smith charts and matching networks. Simsmith. Thank goodness for Elmers like yourself. 73s.

Very good presentation, indeed. I learned a good deal.

Really helpful, thanks Steve!

Excellent presentation, Thanks so much  N2FH

very practical presentation on a complex topic

Thanks for the detailed information. I'm planning to build a Yagi to listen to the air band this info is valuable.

Excellent explanation!

Thank you Steve! This was very inspirational. 73 de Kari, OH2XX

Excellent video!!!!