Order Tray | Contact Us | Home | SIG Lists

[aprssig] Position Ambituity in APRS!

Steve Dimse steve at dimse.com
Tue Jan 8 12:08:02 UTC 2008


On Jan 8, 2008, at 6:55 AM, Steve Dimse wrote:

>  For ambiguities that do not cross the poles or equator (the only  
> case allowed by the protocol), the border away from the equator is  
> shorter than border towards the equator, making it a trapezoid.

To be correct, this statement should be

For ambiguities that do not reach or cross the poles or cross the  
equator, the border away from the equator is shorter than border  
towards the equator, making it a trapezoid.

Minor difference, but I think the protocol does allow ambiguity to  
reach (but not cross) the poles, and the linear projection of this  
would be a triangle.

Steve K4HG




More information about the aprssig mailing list