[TowerTalk] Springtime down on the antenna farm

[Richard Hill]

I'm feeling really dense this morning <grin>, but I'm thinking the easy 
way is to use a compass and take the bearing from one tree to the other, 
and add/subtract 90 degrees.  Accuracy can be near one or two degrees.  
What accuracy is needed? 

I recognize that the question was about online or software tools to do 
the job.  (I do use GPS and UTM coordinates).

Thanks
Rich
NU6T

jimlux wrote:
> Ron Bowman wrote:
>   
>> Hello All!
>>
>> I have relocated to central Virginia (Richmond), and am in the process
>> of closing on a home in the country. With 2.5 acres and lots of tall
>> trees I will be busy planting antennae in the spring. My question: Is
>> there any software out there that will allow me to input the locations
>> of said trees to determine bearings of the wires and consequently
>> radiation directions. I was thinking about using the GPS for position
>> and elevation. I guess I could use a grid pad but it seems like a lot
>> of work. I would like to be able to look at potential arrays or
>> individual antennae for different bands or directions. Of course there
>> will be a tower/yagi planted in the future but I do so enjoy nurturing
>> wire antennae. I look forward to many interesting replies.
>>
>>     
>
> SO you want to take the coordinates of the trees, and given the two 
> ends, figure out the bearing?
>
> THere's a bunch of online calculators that will give you a bearing 
> between two lat/lon, although one has to be careful for small distances, 
> because of numerical precision issues.
>
> You can also set your GPS up for UTM grid coordinates, which are in 
> meters.  You can then calculate direction by ArcTan
>
>
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