Re: [amsat-bb] satellite antennas

["JimJDoyle" <kd4hur@xxxxxxxxxxxxxxx>]

Jon:
    A good example of a CP yagi setup..in the 1997? VHF Sprint, I captured
the top score for 432mhz in north Texas.
    It seems to me using the circular poliz antennas in terresterial mode
that at
long distances the antenna pattern is distorted by the earth itself
(bouncing off
everything in the signal path) so the poliz really doesnt matter. Where I
have seen a difference is things like local repeaters ect that are not that
far away (ie:
under 50miles..(definate loss of gain)
jim kd4hur

----- Original Message -----
From: Jon Ogden <na9d@mindspring.com>
To: Gary "Joe" Mayfield <gary_mayfield@hotmail.com>; <amsat-bb@AMSAT.Org>
Sent: Monday, March 12, 2001 9:13 PM
Subject: Re: [amsat-bb] satellite antennas


> on 3/12/01 8:30 AM, Gary "Joe" Mayfield at gary_mayfield@hotmail.com
wrote:
>
> > With a + mount you are only 3 dB down if you want to work terrestrial
> > (horizontal) or repeaters (verticle).  Bottom line there is no right or
> > wrong answer.
>
> With an X mount you are still 3 dB down for either of those.  CP is CP is
> CP!  The rotation of the field vectors are circular no matter how you
mount
> it.  A perfect circle has no favoritism depending on the elements sit.
The
> only difference it may make as I said previously is that you may end up
> coupling some into your boom or mast if they are metal and you are mounted
> in a + configuration.
>
> Working terrestrial FM or weak signal makes NO difference in how the
antenna
> is mounted provided you have the antenna set up to work CP.
>
> 73,
>
> Jon
> NA9D
>
> -------------------------------------
> Jon Ogden
> NA9D (ex: KE9NA)
>
> Member:  ARRL, AMSAT, DXCC, NRA
>
> http://www.qsl.net/ke9na
>
> "A life lived in fear is a life half lived."
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org