Patrick,
I don't mean to quibble, but don't you think using a Large Capacity Filter
could have biased the Arrow tests?
73,
Jerry, k5OE
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It is commendable to see some direct antennas comparison measurements being
made.
Computer modeling is one thing. Realizing it in hardware is quite another.
The biggest problem in making field measurements is to reduce and try and
eliminate reflections
from the ground, adjacent structures and ov
Hello,hi support link W1GHZ Paul website:
http://www.w1ghz.org/small_proj/hna.zip
73 de iw5bsf Roberto
- Original Message -
From: "i8cvs"
To: "John Kopala" ; "Amsat - BBs"
Sent: Tuesday, April 26, 2011 2:16 AM
Subject: [amsat-bb] Re: Arrow and ELK compara
Hi!
I posted photos from Saturday's antenna test at N7JK's QTH
at:
http://www.qsl.net/wd9ewk/antenna_test/
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
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Not an AMSAT-NA
:
Sent: Monday, April 25, 2011 11:29 PM
Subject: [amsat-bb] Re: Arrow and ELK comparative antenna tests
> One supplemental note on the testing of the Arrow and ELK antennas.
>
> I indicated that having both the transmit and receive antennas in the same
> plane with the ELK might have so
One supplemental note on the testing of the Arrow and ELK antennas.
I indicated that having both the transmit and receive antennas in the same
plane with the ELK might
have some advantages.
I failed to mention that having the crossed yagi design of the Arrow isolates
the 2 antennas from
each
Mark, The testing method for the antennas was fairly basic. The antenna range
was my front yard, the
only easy location free of obstructions, other than a public park. Our signal
source was an
IFR-1200S station monitor feeding an aftermarket dual band rubber duck antenna
vertically polarized
Hi Mark!
> Thanks John and Patrick. Interesting results and a very nice study.
You're welcome!
John and I talked about doing this a few weeks ago while at a hamfest. John
called me Saturday morning, and asked if I was free in the afternoon. I went
over to his house in the early afternoon, and
Thanks John and Patrick. Interesting results and a very nice study.
Question---what was your testing method? I can't glean that from the
information below.
Thanks!
Mark N8MH
At 08:49 PM 4/24/2011 -0700, John Kopala wrote:
>On Saturday, April 23, Pat Stoddard (WD9EWK) and I did some antenna
John,
Thank you for your objective, scientific comparison! I eagerly await
your article in the AMSAT journal ;-) This is really good stuff. If your
test stand is still available there is one more thing I would dearly love to
see tested. Antenna guru Kent Britain, WA5VJB, once commented t
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