Hi Gary and readers,
Thanks for the informations , i m very glad to hear an answers from you
directly.
I have 4 resistors , 330 390 470 560 Ohms that I can switch , most of the
time on 330 and 560 on 160/80m bands with dual j310 preamp , so I ll test
also if some changes and if necessary to increase or decrease extrems
values.
So I ll rise bottom wire at 4-5 ft , I just hope that I will not receive
anymore qrn from neighborhood, but it may be a good idea to test s/n with
local noise.
73?s and many Tnx
Damien
De : K9AY [mailto:k9ay@k9ay.com]
Envoyé : mercredi 2 septembre 2015 20:05
À : f4azf@f4azf.com
Cc : topband@contesting.com
Objet : RE: Topband: K9AY and horizontal wire distance from ground
Damien,
The height of the horizontal bottom wires is not important. The antenna will
work with any height from nearly on-ground to 10 feet or more. With an
elevated loop, be sure that the ground wire is vertical, not sloped, to
avoid skewing the pattern.
You may see changes in the optimum value of the resistor with different
heights, so be prepared to adjust it if necessary.
73, Gary
K9AY
______________
Hi ,
I have a question before again put on place in 2 weeks my homebrew K9AY.
So 86 ft long wires loops,on a 25 ft insulated pole, grounding .. etc. ,
preamp , all "nearly" like original.
My question is about the real height above ground of the "horizontal" part
of the 15 ft wire from base point with the relay box and the height of the 4
extrems points of the loop
Original seems to be 5 ft and the relay box ??? 1ft it seems.
Last season feedpoint was at 1ft and extrems at 3ft on my clay ground.
On some pictures I have saw some feed point (relay box) between 1 and 4 ft
and each side of the loop between 2 and 8 ft.
So many sound.
And if somebody has ever done some tests with this influence or has good
explains , my hears are full opens!
73s Tnx
Damien F4AZF
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