How to Tune a 40M EFHW if 20, 15 and 10. DO THIS on a 1934-1079-ND Toroid!

Don't want to watch? - Add a coil 6 feet out at 10-12 loops for kits utilizing 1934-1079-ND Such as the K6ARK EFHW kit and the Dudetenna..

NOTE.. (468/F)*.97 (for velocity factor) worked for me. I Believe this is due to End Effect. Normally end effect is calculated at .05 percent. so 468*.05 = 467.4/7 = 66.77ft * .97 (Velocity factor) = 64.76828571428571 ft.

If you are watching and not using the
1934-1079-ND toroid, you will need to calculate the design and placement of your coil. Additionally, you could just make links to add and remove.

Links to my EFHW kits https://www.etsy.com/shop/HamRadioDudeSells

Subscribe to @K6ARK by clicking here @K6ARK

If you would like to print your own coil - https://www.thingiverse.com/thing:6530402

If you have complaints about the quality of my video or something I said which offended you, please address them here - https://www.youtube.com/watch?v=o-YBDTqX_ZU


And more importantly: have a good day and enjoy what YOU make amateur radio (not what someone else tells you).