[RFI] Compass Vectors
w8bya at mchsi.com
Tue Dec 1 13:16:40 EST 2015
Being an astro-imaging nut I would like to remind folks that during the
daytime using the sun or the moon if visible is extremely accurate.
Even with cloud cover if you can make out the shape of the sun you have
an instant compass.
I use them all the time to check the alignment of my various higher gain
VHF/UHF antennas, esp after heavy wind storms. I just step back 50' or
so from my tower and align the boom with the known astro source, be it
the north star, sun, moon, etc.
Since I know my stars & planets I have used many of them (i.e., Venus
around sun rise/sun set) to get very accurate bearings. All this data
is commonly available, day or night so keep it in mind in a pinch.
Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 12/1/2015 12:01 PM, Jim Brown wrote:
> There is also 5-10 degrees worth of "slop" in the photography
> displayed by Google Earth. I discovered this when trying to use the
> Ruler function in alignment with the walls of my house. :)
> 73, Jim K9YC
> RFI mailing list
> RFI at contesting.com
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