Hi,
Thank you everybody for your ideas and information about verticals.
I have been reading many articles written bt Rudy, N6LF about Lazy-H. It is
very interesting antenna.
somebody know about any multiband Lazy H design???
I have been modeling one for 40 and 80m using MMANA...I believe it is
possible but i need some extra information.
73...Doug, CO8DM - Member of T48K Team
----- Original Message -----
From: "Kelly Taylor" <ve4xt@mymts.net>
To: "Joe" <nss@mwt.net>; <cq-contest@contesting.com>
Sent: Saturday, May 03, 2014 5:18 PM
Subject: Re: [CQ-Contest] Verticals and radials????
You can use a variety of methods of electrically lengthening physically
short radials, from the coils Joe suggests to linear methods or just
running
the full-size radials in the spaces available, zig-zagging or turning
corners, etc.
73, kelly
ve4xt
On 5/3/14 11:32 AM, "Joe" <nss@mwt.net> wrote:
Ok,,
What you can do since it is elevated, yes they ( The Radials ) do need
to be resonant just like a dipole. And since you can not do full sized
ones. You can just like a dipole add loading coils to them to be allowed
to have them shorter and still be resonant.
Remember being elevated you need them to be resonant for EVERY band of
operation also, and at least 4 per band. Goona get complicated. I see
LOTS of interactions between them all, trying to get all of them
resonant on all those bands at the same time. WOW.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 5/3/2014 10:19 AM, Douglas Ruz wrote:
Hi,
Let me give more information.
I am trying to build the antenna published in Sep/1981 QST. It is 44
ft high plus a capacitance hat.
It is 5/8 on 30m, 1/2 on 40m, 1/4 on 80m and 1/8 on 160m (the vertical
portion).
In my case, IT IS NOT on ground. My backyard is about 15 by 15 ft, so
i decide install the antenna in top of mast about 15 ft high, so,
radials are elevated and running over the roof but only till 60 ft, so
for 160m i need do "something" to get match.
I think i must install independent radials for each band to get
resonance cause i am using elevated resonant radials.
Dave, K3ZJ and Bob WP2XX now you have more information.
Thanks in advance
73...Doug, CO8DM - Member of T48K Team
----- Original Message ----- From: "David Siddall" <hhamwv@gmail.com>
To: "CQ-Contest" <cq-contest@contesting.com>; "Douglas Ruz"
<co8dm@frcuba.co.cu>
Sent: Saturday, May 03, 2014 11:01 AM
Subject: Re: [CQ-Contest] Verticals and radials????
If laid on or under ground, as many as possible and lengths don't
matter. If elevated, need to be resonant, but assume this is not your
case.
For excellent info on radials, see:
http://www.antennasbyn6lf.com
73, Dave K3ZJ
On May 3, 2014, at 9:55 AM, Mirko S57AD <miroslav.sibilja@amis.net>
wrote:
Don't worry about quarterwave radials. Just put as many short ones as
you
can afford!
73, Mirko, S57AD
2014-05-03 5:04 GMT+02:00 Douglas Ruz <co8dm@frcuba.co.cu>:
Hi,
I am building a vertical antenna for low bands, 160, 80, 40 and 30m.
Unfortunately my property is small, so, i can not install quarter wave
radials for 160m. 60ft is maximun length.
If somebody has experience or some information about short radials
systems
or some article published please let me know.
Thanks !!!
73...Doug, CO8DM - Member of T48K Team
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