Always a pleasure to see you work out,you must have lost 1/2 a stone lol. Take care of yourself and yours.73s.🇬🇧👍

Got mine to tune on the ft710 from top band to 6 meters

Nice review of the wire antenna, by the way you could save the wire by folding it back on itself. It achieves the exact same SWR tuning while saving you from cutting the antenna wire too short, one to think about. Regards from a fellow amateur radio operator.

amazing video, definetly helped me with my one in my garden! - M7MFK

Good learning video, wonder if it ended up too short once installed at a different height above ground.

EFHWs are amazing.. Little tip....Dont cut the wires......Fold them back until you have the perfect SWR.  Ive heard stories of people over cutting the wire and rendering it useless.  Second tip....Dont rely on the coax to be the counterpoise.   It will bring in the RF to the shack.  Add a 0.05 x length of the longest wave length counterpoise   (so 4m if your EFHW is the 41m long one to include 80m or 2m if your lowest band is 40m) from the transformer...and choke the coax at the feed point. It pushes the RF down the counterpoise wire and encourages the antenna to work better.  Ideally it should run perpandicular to the wire antenna, but if you have to drop it down at 90deg thats fine - but dont let it touch the ground.    Doing that reduced my noise level significantly on 80 40 and 20 particularly.  You get more juice for the squeeze.   Enjoy!  M7 LUQ

The only place i can place my end fed is running the full length of the bungalows roof then with a weight ive had to throw the rest of the wire over the roof so its at a 90 degree's.  
Does work from topband to 6 meters with the 710s atu . Before i put it like this i turned it on the ground with 10 meters going up a pole then the rest sloping down then starting cutting bit by bit using a rig expert to view the results.
It works and gets me on the air which is all that matters. The biggest restriction i have for putting up antennas is not the location but the xyl .  She put up with me for over 43 year's with all  my antennas over the years and ive finally let her have her way .

You should use a minimum of around 10 to 15m of coax after the transformer to provide a suitable counterpoise back towards the radio and the use of a choke or line isolator takes care of any returned RF which would affect SWR if not choked off.

Thanks for the video!
A horizontal end fed that close to the ground will be brilliant as an NVIS 'cloud warmer' on 40m around UK/EU, but I doubt it would get you VK on 20m. If you tried it 'inverted V' style (so it's more like a vertical / sloper) it might improve the low angle radiation enough to get you VK.
Most activity on 10m SSB is 28.3 to 29 MHz, so don't worry about the 2.5:1 at the very top end, I doubt you'll ever use it at 29.7MHz. 😉
73 G0JLF

Why not fold the end of the wire back on itself and not waste the wire, making only one cut when the target frequency has been achieved.

Great video Tom. Does height above ground affect SWR?

Never tune an antenna at the radio end of the coax ,you can null the coax velocity out with adjustment on the analyser if you know how.

VK on 20W would be impressive! Show that it's all in the antenna!

I wish you could have gotten that SWR down a bit further.
I am guilty of the bending it method as well, and after back and forth a couple times, taking down, putting up, taking down. The inv V in my loft has used that method and I am tempted, when the weather cools off, to go into the loft and get rid of this bend back method as it is technically still connected which means it is still getting power from the radio, it has worked for me, but I could probably get better results if it were 'correctly' tuned in the static location it is.

The thing which threw me was, tuned EFHW, same pole, same coax, same band, different location different SWR - There are a few variables as well!
The bonus of the bend back method is that, if you do end up somewhere else with the same set up you do have that little extra bit of cable to properly extend into the mix.

What do you reckon the SWR would look like with a longer coax run for yourself in the same location?

What is  VK Contact?

2:1 SWR should be fine, only 11% of your power gets reflected back. If it gets too high, most modern transceivers will throttle back the output power to protect themselves. Best avoided though!