On Mon, 14 Dec 2009 11:58:26 -0800, Ron D'Eau Claire r...@cobi.biz
wrote:
Yes you did open the flood gate. Antenna opinions are like noses.
Every one has one...
As Ron say's, If you can't get a dipole up 1/2wl you will be sending
most of your radiated output and receiving at high angles, which
...@n5ge.com wrote:
From: Radio Amateur N5GE n...@n5ge.com
Subject: Re: [Elecraft] antenna farm
To: elecraft@mailman.qth.net
Date: Tuesday, December 15, 2009, 12:40 PM
On Mon, 14 Dec 2009 11:58:26 -0800,
Ron D'Eau Claire r...@cobi.biz
wrote:
Yes you did open the flood gate. Antenna opinions
Fellow Elecrafters,
I have a feeling this may open the flood gates but here goes.
I am a newbie Ham but a long time SWL going back to my Knight Kit Star Roamer.
I am fixin' to set-up my antenna farm. OK, it will be more like an antenna
garden as I have a small house and lot. My K3/100 has a
Hi Clint!
Welcome to the reflector
The reality is that most won't be able to place antennas high
enough and free of surroundings to realize their text book
or free space patterns, and it's more a case of you takes
what you gets.
It's a complicated matter, with many variables, all mostly
In a space limited situation, a parallel dipole (or inverted-V) does
well. Just calculate your 1/2 wave lengths for each band connect them
to a common feedpoint. Use small diameter PVC for spreaders. Even on a
small lot, you could get away with an 80-10 parallel (fan) inverted-V.
The ends
I have very limited space plus hoa restrictions; the center /feedpoint
of the dipoles is only fourteen feet high. With this antenna, my K3, or
it's predecessor, a very modified FT-101E, I've worked 111 DXCC entities
since erecting it in early July. Since these photos were made, I've
added
As Ken mentioned, height is an important factor in a horizontal or
semi-horizontal antenna. There's limited gain in any direction at low
angles unless the radiator is 1/2 wavelength above ground. That's why most
of us have to live with little directivity on the lower bands.
The option is to
Hello Clint,
While planning your antenna farm, have you considered using an antenna
modelling program such as EZNEC which could be of great help to you. A free
version comes with the ARRL Antenna Handbook.
Due to the effect of nearby objects such as above ground power lines, metal
gutters etc
And, if you don't have enough space for a radial field on the ground,
try a vertical doublet, center fed with balanced line for multi-band
operation. I've been using one for years which is 32 ft. tall and can
be loaded easily from 30 meters to 15 meters. Much better for dx than
my low dipole and
W9DVM
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Cunnings
Sent: Monday, December 14, 2009 3:48 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] antenna farm
And, if you don't have enough space for a radial
Duncan Carter wrote:
Even if you don't have space for a large radial field, you are apt to
do better with elevated radials, even one radial ( the lower half of
the dipoles) as I have. Putting wire in or on the ground is mainly
useful for keeping earthworms warm. To read a lively debate
and
on what bands that your budget can afford. Good luck.
Mel, K6KBE
--- On Mon, 12/14/09, Clint clint.st...@sbcglobal.net wrote:
From: Clint clint.st...@sbcglobal.net
Subject: [Elecraft] antenna farm
To: elecraft@mailman.qth.net
Date: Monday, December 14, 2009, 10:17 AM
Fellow Elecrafters
: Elecraft Discussion List
Subject: Re: [Elecraft] antenna farm
Hello Clint,
While planning your antenna farm, have you considered using an antenna
modelling program such as EZNEC which could be of great help to you. A free
version comes with the ARRL Antenna Handbook
On Dec 14, 2009, at 12:45 PM, Geoffrey Mackenzie-Kennedy wrote:
While planning your antenna farm, have you considered using an antenna
modelling program such as EZNEC which could be of great help to you. A free
version comes with the ARRL Antenna Handbook.
This is the approach I am taking,
Byron Servies wrote:
On Dec 14, 2009, at 12:45 PM, Geoffrey Mackenzie-Kennedy wrote:
This is the approach I am taking, though I ended up buying EZNEC+ as I have a
lot of
architectural metal in my 3-story town home over the Santa Cruz small craft
harbor.
The first story is also stucco,
When I first put up my vertical, I only had 40 and 20 meters and mounted
them on the opposite of my house from the current feed point location,
that is, in between and close to the rain gutter and the metal chimney
liner. The feed point resistance on 40 was as expected but the feed
point
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