Posted: 6/20/2016 10:44:28 PM EDT
|
From: MOSHE INGER 4Z1PF
HaGal Israel Amateur Radio Club Magazine, issue 410, June 2013 translated by Earl VA6TJ I found a .pdf online that I liked for an end fed and the 9-1 un-un. So, I decided to roll my own from the ground up, a first for me. Its been a fun project. The First obstacle was the pdf I have doesn't mention what toroid to use. To this, I looked at others and noted that the Earchi end fed uses a T106-2. So I located a few via the internet. Next was to convert all the measurements from metric to inch. Rolling the 9-1 wasn't hard, but the T106-2 is tiny getting all 9 in there. Slap it all in a box with all the holes in it, and slop some hot glue in there to hold it all hopefully in one place. Note that I did say slop. 
I'm hoping to get the wire cut (aiming for 53'), but am open to suggestions, and hang this within the next day or so, and have some sort of idea on how it works before field day. So, all you wire antenna experts, how long of a wire should I cut? He (Moshe) mentions 10 meters or longer. How long should I go to get 6 through 80 if possible. |
|
Used one for a long time. Lengths are here in white colors depending on your desired band coverage.
Don't forget to add counterpoises of at least 1/4 wavelength of the highest band you want to operate. One or four should be good, raised vs. ground works better. Personally, I'd go to a dipole. The one thing about verticals is that they tend to be noisy as heck vs. dipoles - in my case, at least 3 S units difference in background noise. |