The Wellbrook loops are broadband and generally work well with an SDR, and are less
susceptible to noise than a vertical or wire antenna.
Russ Edmunds
15 mi NNW of Philadelphia
Grid FN20id
<wb2bjh@xxxxxxxxx>
--------------------------------------------
On Sun, 3/2/14, Les Rayburn <les@xxxxxxxxxxxxxxxx> wrote:
Subject: Re: [IRCA] Active Whips Mounted Horizontally
To: "Russ Edmunds" <wb2bjh@xxxxxxxxx>, "Mailing list for the International Radio Club of America" <irca@xxxxxxxxxxxxxxxx>
Date: Sunday, March 2, 2014, 2:28 PM
Russ,
What about a broadband loop, such as the Wellbrooke
ALA-1530S? I
have one purchased, and setting the shack awaiting
installation.
Would this be a good choice?
Les Rayburn, Director
High Noon Film
130 1st Avenue West
Alabaster, AL 35007-8536
(205) 621-7500
(205) 621-7505 FAX
(205) 253-4867 CELL
http://www.highnoonfilm.com
---------------------------------------------
This e-mail contains information that may be
confidential or
privileged and is intended only for the
person(s) named
above.
Any other distribution, copying or disclosure is
strictly
prohibited. If you have received this e-mail in
error,
please
notify the sender immediately and return the
original
transmission to the above address by mail
without making a
copy.
On 3/2/2014 1:17 PM, Russ Edmunds wrote:
My understanding is that more electrical noise is
vertically polarized than horizontally, so there
could be an advantage in a horizontal antenna on that score.
However, by putting the antenna
in the horizontal plane, it is now no longer
omnidirectional, but rather somewhat bidirectional,
which may or may not be a good thing.
Where noise is a problem, one's optimum choices would be
an inductive antenna. This will
normally also be directional, whether it's an indoor
tuned air core loop or an outdoor untuned
superloop or flag. The former would also include a ferrite
core tuned indoor antenna.
These will all almost always be quieter than a wire antenna
of almost any length, either
vertically or horizontally polarized.
But since you are using an SDR, which is broadband, any of
the tuned indoor loop options
would be impractical as they are not broadband.
Russ Edmunds
15 mi NNW of Philadelphia
Grid FN20id
<wb2bjh@xxxxxxxxx>
--------------------------------------------
On Sun, 3/2/14, Les Rayburn <les@xxxxxxxxxxxxxxxx>
wrote:
Subject: [IRCA] Active Whips Mounted Horizontally
To: "am@xxxxxxxxxxx"
<am@xxxxxxxxxxx>,
"irca@xxxxxxxxxxxxxxxx"
<irca@xxxxxxxxxxxxxxxx>
Date: Sunday, March 2, 2014, 2:08 PM
Forgive more of my silly questions,
but here goes. I continue to try to fight, abate, and
reduce
local noise here in my suburban neighborhood. Deed
restrictions complicate things further, since no visible
outside antennas are allowed.
Would mounting the active whips horizontally have any
effect
on the noise that they're receiving? I notice that
noise
seems to generally be lower using horizontal antennas than
verticals in my situation?
-- 73,
Les Rayburn, N1LF
Maylene, AL
EM63
Member NRC, IRCA, & Medium Wave DX Circle
Former CPC Chairman for NRC/IRCA
Perseus SDR, SDR-IQ,Funcube Pro, Wellbrooke ALA-1530+ loop,
LF Engineering Active Whips,
Quantum Phaser, Kiwa Loop, Palstar MW Pre-Selector
_______________________________________________
IRCA mailing list
IRCA@xxxxxxxxxxxxxxxx
http://montreal.kotalampi.com/mailman/listinfo/irca
Opinions expressed in messages on this mailing list are
those of the original contributors and do not necessarily
reflect the opinion of the IRCA, its editors, publishing
staff, or officers
For more information: http://www.ircaonline.org
To Post a message: irca@xxxxxxxxxxxxxxxx
--
73,
Les Rayburn, N1LF
Maylene, AL
EM63
Member NRC, IRCA, & Medium Wave DX Circle
Former CPC Chairman for NRC/IRCA
Perseus SDR, SDR-IQ,Funcube Pro, Wellbrooke
ALA-1530+ loop, LF
Engineering Active Whips,
Quantum Phaser, Kiwa Loop, Palstar MW Pre-Selector