Radio amatør OZ1JBI
© c-j-f 2010
My call sign is OZ1JBI I have an A Lisensed it
means that I must send at HF - VHF and UHF
bands .. Today my antennae reduced to a comb.
round beams to VHF and UHF and a homemade
4th band antenna for 80,40,20,10 meters, and
a delta loop for 50 mhz. HF antenna caused me
some problems because my land did not permit
a longer antenna than a 17 to 18 m. I came
across an article in OZ No. 12 1999 on an
antenna OZ5WF which I freely quote.
My VHF / HF Station
Yaesu FT 897 with Antenna Tuner LDG AT 897LDG
output meter SignaLink USB Soundcard Interface.
An excellent "emergency antenna"to 10, 20, 40 and 80 meters
Of OZ5WF Willy Sachse,
Actually it's not me who originally took on this case but I got sent to
the drawing of OZ4PY about. 15 years ago. When you immediately see
the drawing, the antenna very savvy enough say: It can not work - but
fairly freely hanging is actually quite useful. It has been demonstrated
by several experiments with this type of antenna that tilklipning of
wires to and from L3 may be necessary, but remember: It is a very
abbreviated antenna at such low frequencies as 7 and 3.5 MHz and
therefore the height above ground is a essential factor for the
resonance, but with good patience and an antenna tuner is the best of
my knowledge useful and acts as an ordinary dipole on 28 and 14 MHz.
It has been my only antenna for HF in those 15 years and is hung
inverted with the point about food. 10 m above ground and the ends
down to the fence with a clothesline as 'extension'. Whether you want
to use balun or not is a matter of taste. I've always done it, but the last
exercise has shown that you can splendid as without (?), hi. It has
traveled around the kingdom, has been suspended from the strangest
places, between and under trees and in such a situation, SWR obviously
inferior, but it works. Good luck if l want to try - it is certainly cheap!
Click to enlarge