Noon by the clock, or noon by the sun (solar time)? Depending on
location, the clock can be nearly an hour off particularly if in a state
with a skewed time zone, or near the edge of a time zone. Michigan
(where I live) is near the Western edge of the Eastern time zone. My
location is off by nearly an hour between EST and Solar time.
73, Roger (K8RI)
On 1/23/2017 3:31 PM, Jim Brown wrote:
On Mon,1/23/2017 8:32 AM, Michael Clarson wrote:
David's method of using a topo map and sighting an object is the best
way.
That works IF you can see the distant object. My towers are in a dense
redwood forest. I established true north from the shadow of the tower
at solar noon using online tables by date, on a day when the sun got
through the trees to cast a shadow at noon, and laid down a log along
the shadow.
https://www.esrl.noaa.gov/gmd/grad/solcalc/
73, Jim K9YC
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
--
73
Roger (K8RI)
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|