has any one builded a 80 meter rotatable single element beam would like specs and results jose n1duo
2006-12-05 02:19:47 · 3 answers · asked by hamtechhaunt@yahoo.com 1 in Science & Mathematics ➔ Engineering
Here's a picture of a big 80m rotateable dipole
going up (Force 12 EF-180C)
http://www.qth.com/gallery/AntennaParty/05_10_KA9FOX_024
83 foot long element.
you didn't say it had to be full sized. Force 12 for instance
has 54' and 68' versions also. And once you allow coils, there
are lots of possiblities
K1TTT's article "An 80m Beam From Scratch" might help.
Use google to find it and look at the cached version of the article
he's got all the modelling data there
2006-12-07 18:14:28 · answer #1 · answered by Johnny R 1 · 0⤊ 0⤋
I've been a ham a long time and as far as I know a single element would be a rotary dipole. You require two elements to create a front to back ratio.
Try the Radio Amateurs Handbook from ARRL or RSGB.
www.arrl.com
www.rsgb.org.uk
2006-12-06 04:26:14 · answer #2 · answered by charley128 5 · 0⤊ 0⤋
What????
Plains?????
Beam?????
2006-12-05 18:41:34 · answer #3 · answered by daedgewood 4 · 0⤊ 0⤋