[amsat-bb] Re: Antenna discussions

[Dee]

The actual fixed elevation on the AZ rotor is determined by the beam width
of the yagi antenna used.  If at all possible, all the calculations based on
the average pass elevation is near 30 degrees.  If you believe that you will
use lower passes, say if the beam width is 25 degrees, putting it fixed at
about 20degrees gives you the split of + - 12.5 degrees.  It IS a tradeoff.
The higher the gain of the Yagi, the lower the beam width.
Good Luck...
Dee, NB2F 

-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Ted
Sent: Thursday, March 24, 2011 2:02 PM
To: GW1FKY at aol.com; amsat-bb at amsat.org
Subject: [amsat-bb] Re: Antenna discussions

Agree !!

Along those lines, before I put up my Kenpro az/el rotor, I plan on testing
various locations using my Elk with a fixed el but on a small rat shack
rotor for az. I have seen here recommendations for 15 deg and some for 30
deg fixed el. Thus there seems to be 2 schools of thought on this. Is there
any compelling argument for one or the other? I'm almost inclined to split
the diff at +-22 deg. (most passes for me are N/S and to the E - not so good
to W

Any thoughts appreciated

73, Ted, K7TRK

-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of GW1FKY at aol.com
Sent: Saturday, March 19, 2011 2:36 AM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: Antenna discussions

Hi all,
Regarding the discussions on antennas - I am not into any debate about the
pro's and con's, but would just like to encourage anyone to just have a go. 
Sure the argument will always prevail perhaps under the " Must do Better"  
comment and I am sure
that one can always improve or progress with experimenting -  (  AMATEUR
RADIO ) 


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