I'd have to say "It Depends". A 'regular' QHA has about zip for gain on the
horizon where you really need the it, although I've read where the "extended"
QHA's have a 'flatter' pattern, with the gain squeezed down towards the horizon.
Same with eggbeaters. I have a pair of the M2 units, and even
It surprises me that nobody appears to sell commercially made Lindenblads.
Jim Jerzycke wrote:
> An altenative would be to build a Lindenblad like Tony AA2TX designed. I have
> the parts collected to do just that, but won't have the time to build one for
> a few weeks.
__
How can you upload a web page if you have your "dog on it" ? Move the
dog first then try! ;-)
Happy 4th all!
73
--
David
KG4ZLB
www.kg4zlb.com
Joel Black wrote:
> Happy Independence Day.
>
>
>
> Doggonit, I cannot upload to my webpage (something else yet to figure
> out).
>
>
>
>
__
Sounds like the "QHTennas", made by N4QH. Reviewed in QST in 2005, then he
stopped producing them just a few months later.
Near as I could figure out, they are a conventional turnstile design, but
with the 2 dipoles separated by the length of the phasing line, and no
reflector.
George, KA3HSW
vid - KG4ZLB
> Subject: [amsat-bb] Re: Antenna Question
> To: amsat-bb@amsat.org
> Date: Saturday, July 4, 2009, 11:28 AM
> How can you upload a web page if you
> have your "dog on it" ? Move the
> dog first then try! ;-)
>
> Happy 4th all!
>
> 73
The product review is in the August 2004 QST. If you have access to the reviews
page you can find it under the "Q" listings by manufacturer.
Jim KQ6EA
--- On Sat, 7/4/09, George Henry wrote:
From: George Henry
Subject: [amsat-bb] Re: Antenna Question
To: "amsat bb"
Da
te.
George, KA3HSW
- Original Message -
From: "Jim Jerzycke"
To: "amsat bb" ; "George Henry"
Sent: Saturday, July 04, 2009 1:54 PM
Subject: Re: [amsat-bb] Re: Antenna Question
The product review is in the August 2004 QST. If you have access to the
revi
I would suggest that you don't need a phasing line if the dipoles are spaces a
quarter wave and that both are fed by
equal length cables.
George Henry wrote:
> Looking at the pictures, it appears that the dipoles are separated by about
> 1/4 wave in free space, which is physically longer than
That's them. Thanks, George and, David, I got the dog off the webpage. ;)
Tnx,
Joel, W4JBB
George Henry wrote:
> Sounds like the "QHTennas", made by N4QH. Reviewed in QST in 2005, then he
> stopped producing them just a few months later.
> Near as I could figure out, they are a conventional t
True, but since the QST article mentioned a phasing line, I was trying to
figure out his design.
George, KA3HSW
- Original Message -
From: Nigel Gunn G8IFF/W8IFF
Subject: [amsat-bb] Re: Antenna Question
To: George Henry
Cc: amsat bb , Jim Jerzycke
>
> I would suggest that you
While searching for public text concerning Amateur satellites and
phased array antennas, I came across this gem from our very own Tom
Clark, K3IO
http://mysite.verizon.net/w3iwi/electronic_scanning_antennas.pdf,
"Electronic Scanning Antennas for Amateur Spacecraft". I wonder if
this knowhow could b
V were not bad concepts. Face it, we are not going to
make "working the world" on an HT a viable proposition.
Robert WB5MZO
> From: samudra.ha...@gmail.com
> Date: Thu, 22 Oct 2009 15:16:25 -0400
> To: amsat-bb@amsat.org
> Subject: [amsat-bb] Re: antenna question
>
: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Samudra Haque
Sent: Thursday, October 22, 2009 12:16 PM
To: Amsat-bb
Subject: [amsat-bb] Re: antenna question
While searching for public text concerning Amateur satellites and
phased array antennas, I came across this gem
Some maritime TVRO antennas used a mechanical scan at the feed point. A motor
would either rotate an attenuator disk or offset the feed in a circular motion.
A resolver kept track of the feed location in relation to received signal
strength. The antenna was then slewed in the direction of best
Hi, amsat-bb,
With regard to the very interesting subject of Antennas in Space (in
general), I hope some of you will be interested to plan to take up a
design for a spaceborne antenna, sounds interesting! To help in that
process, I was very impressed to read (well, the non-technical bits!)
of the
Hi Doug,
I doubt that I have greater understanding of antennas than you do, but I'll
give your question a shot. Actually, I have been working on circularly
polarizing the ARROWS with the WRAPS lately, a work still in progress but
almost complete. So I am throwing out the draft information I h
Jacob, for what it is worth, I built the 'eggbeater' and it was so 'noisy'
tossed it. Built the dual Moxon out of brass tubing from the hobby shop and
just love it !!! (I'm a big Moxon fan as you can tell)
The Moxi works for me. But, since you already have the KLM's, not sure you
will do better fo
In a message dated 5/2/2010 6:46:20 P.M. Eastern Daylight Time,
k7trkra...@charter.net writes:
> I already have plans for the beams I have to be setup here at the house
I wish you the best of luck Jacob with your setup. I did quite
a bit of outdoor operation with a handheld sat antenna w
18 matches
Mail list logo
