Joseph,
Check out this page:
http://www.thecompassstore.com/decvar.html#
There's a link on that page to plug in your Zip code and figure
declination, or
you can use the handy map on the main page.
For Austin, the magic number is 4 degrees.
If I recall correctly (it's been a few years), I set the
Joseph, sorry to hear about your sickies.hope it wasnt the Pig Flu.
Firstthere are NO such things as dumb questions, as that is the only
way I learn is by asking them myself.
Secondly.all directional data given by a tracking program is using TRUE
NORTH, and in my case it i
One can also use Polaris (the North Star) at least in most of the northern
hemisphere where it is visible. A long time ago, I went outside after
dark and looked at how my house lined up with Polaris. In my case, it was
a dead sight along the front or back side and the peak of the roof to
Polaris.
Hi Joe and the group. IMHO when we get to discussing IGRF for mounting an
antenna and rotator for amateur radio use, we are over thinking this issue.
Now I must admit that I only have a 3 degree difference in EN19 which I
completely ignore. I find there is too much magnetic QRM around here to ge
My 2 cents.
Use a handheld GPS to align, or refer to a map. Reason: the Arrow is not a
small beamwidth antenna...don't put too much accuracy into alignment. Like
tracking pennies on a million dollar contract. Case in point: I took a TV
rotor into the unfinished attic of my house, taped it to a
in practice.
Greg KO6TH
> Date: Wed, 12 Aug 2009 11:22:16 -0500
> From: n...@lavabit.com
> To: bhow...@mail.utexas.edu
> CC: amsat-bb@amsat.org
> Subject: [amsat-bb] Re: rotator questions
>
> One can also use Polaris (the North Star) at least in most of the northern
> hemisph
How about aiming for maximum receiver noise? That should be even more accurate.
Greg Wrote: and then adjust the antenna so the shadow falls directly down
the antenna boom.
___
Sent via amsat...@amsat.org. Opinions expressed are those of the author.
de
i8CVS Domenico
- Original Message -
From: "Nigel Gunn G8IFF/W8IFF"
To: "Greg D."
Cc: ;
Sent: Thursday, August 13, 2009 2:17 PM
Subject: [amsat-bb] Re: rotator questions
> How about aiming for maximum receiver noise? That should be even more
accurate.
>
&g
Yes that's a good point, I'm not encouraging anyone to go on their roof at
night, in fact I would heartily discourage it for the sake of safety.
What I intended to mean was, I looked at Polaris at night, got the
difference from the way my house/roof points, then took that protractor up
to the roof
To find true north at your QTH:
Go to
http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-day-us
Enter your nearest city and state into the menu
If you prefer to enter latitude and longitude, or if you are outside of the
USA, go to
http://www.usno.navy.mil/USNO/astronomi
Or go to:
http://www.usno.navy.mil/USNO/astronomical-applications/data-services/alt-az-us
enter your location and get the azimuth of the Sun for every 10 minutes so you
do not have to worry as much about clouds or trees, etc.
John WA4WDL
Daniel Schultz wrote:
> To find true north at yo
riginal Message -
>From: "Nigel Gunn G8IFF/W8IFF"
>To: "Greg D."
>Cc: ;
>Sent: Thursday, August 13, 2009 2:17 PM
>Subject: [amsat-bb] Re: rotator questions
>
>
> > How about aiming for maximum receiver noise? That should be even more
>
n...@lavabit.com; bhow...@mail.utexas.edu; amsat-bb@amsat.org
> Subject: Re: [amsat-bb] Re: rotator questions
>
> How about aiming for maximum receiver noise? That should be even more
> accurate.
>
> Greg Wrote: and then adjust the antenna so the shadow
out using the
sun for a noise generator.
John W6ZKH
- Original Message -
From: "Greg D."
To: ni...@ngunn.net
Cc: amsat-bb@amsat.org, n...@lavabit.com
Sent: Friday, August 14, 2009 10:41:00 PM GMT -08:00 US/Canada Pacific
Subject: [amsat-bb] Re: rotator questions
Hi
Greetings!
This thread is bringing back memories.
Eons ago (60's) when I was servicing long range radar for the USAF
once a month the third shift crew would have to verify the proper
azimuth and elevation orientation of our antennas. We would stop all
antenna motion, stop transmitting and cra
5, 2009 5:02 PM
Subject: [amsat-bb] Re: rotator questions
> Greetings!
>
> This thread is bringing back memories.
>
> Eons ago (60's) when I was servicing long range radar for the USAF
> once a month the third shift crew would have to verify the proper
> azimuth and elevati
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