At 9/5/2010 08:23, you wrote:
In my experience, cross-polarized antenna systems (those with
simultaneous in-phase vertical and horizontal components)
Isn't that just diagonal polarization? You can't have multiple linear
polarization orientations; that's the whole point of circular
It looks like the FCC rules give you extra power when opting for dual
polarization.
No, they don't give you extra power. For commercial stations, horizontal
polarization is the standard. You can supplement it with vertical, either
as cross-polarized linear, or as elliptial/circular, but that
Gary,
Once you get it figured out, PLEASE write up an article for Repeater-Builder
for the rest of us!!
Mark - N9WYS
-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of Gary - K7EK
Thanks to all that replied. I appreciate your input. I'm still looking for
answers,
On Fri, 3 Sep 2010, Mark wrote:
Once you get it figured out, PLEASE write up an article for
Repeater-Builder for the rest of us!!
Make an X with dipole elements, and connect the feed harness to one
side, and connect the left and right sides together with 1/4-wavelength
of coax, wire, or
On Fri, 3 Sep 2010, Kris Kirby wrote:
Once you get it figured out, PLEASE write up an article for
Repeater-Builder for the rest of us!!
Make an X with dipole elements, and connect the feed harness to one
side, and connect the left and right sides together with
1/4-wavelength of coax,
FM Broadcast started out Horizontally polarized. Circular
polarization was later authorized under 2 stipulations. The vertical
plane power can not exceed the horizontal power ERP, and the
horizontal plane ERP is used for the stations ERP. So a station with a
horizontal antenna can effectively
HI to all,
I guess that I do not have much to contribute on this thread
but to me it is very interesting reading. Gary has my sympathy, his
problem is duplicated here. Much of my repeater work relates to a low
power portable repeater on 141 MHz. We live near a medium sized mountain
: Circular polarization for VHF repeaters?
Our repeater runs 5 watts output, needs to run three or four days off a
gelcell, and most importantly has to fit into a backpack to be carried
to a convenient hilltop. Fortunately, the split is 3 MHz so that the
duplexer is of a reasonable size
] Re: Circular polarization for VHF repeaters?
It looks like the FCC rules give you extra power when opting for dual
polarization. Doesn't mean the circular antenna contributes to extra coverage,
in fact it looks like the extra RF power allowed for the two polarities is
giving you more
to be crossband, but worth a shot.
73,
Paul, AE4KR
- Original Message -
From: mailto:zl...@nzart.org.nzGordon Cooper
To: mailto:Repeater-Builder@yahoogroups.comRepeater-Builder@yahoogroups.com
Sent: Thursday, September 02, 2010 1:51 AM
Subject: Re: [Repeater-Builder] Re: Circular polarization
On Thu, 2 Sep 2010, Gordon Cooper wrote:
I guess that I do not have much to contribute on this
thread but to me it is very interesting reading. Gary has my sympathy,
his problem is duplicated here. Much of my repeater work relates to a
low power portable repeater on 141 MHz. We
On Thu, 2 Sep 2010, Paul Plack wrote:
Gordon, something worth trying might be low-band.
About 20 years ago, I lived in an area where hams did course communications
for rally events in very mountainous terrain. I remember experimenting one
night about 2am with my partner at the other end of
coverage.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of sbjohns...@aol.com
Sent: Thursday, September 02, 2010 6:48 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Circular
On Fri, 3 Sep 2010, Gary - K7EK wrote:
Thanks to all that replied. I appreciate your input. I'm still looking
for answers, but may be onto something. I have emailed Bill
Pasternak, the author of that Cushcraft 4-pole conversion article. I
re-read his original article and may have figured
Hi,
I remembered circular polarization was used for FM broadcast due to FM car
radios, but when I looked it up I found out some interesting facts, see the
link below,
To: Repeater-Builder Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Circular polarization for VHF repeaters?
Hi,
I remembered circular polarization was used for FM broadcast due to FM car
radios, but when I looked it up I found out some interesting facts, see the
link below
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