What is this fixation wit accuracy and pointing antennas?
The road by our house runs N/S and is close enough.
On HF +/- 10 degrees should be "close enough. Even with large arrays
"That looks about right" with most of us is more than close enough.
The only time you need accuracy to a "few" degrees or better is with
VHF, UHF and up, arrays. Dish antennas do need precision as does
Astrophotography. Now that's into the less than 1 degree. Aeronautical
charts with the Isogonic lines tell you how far a magnetic compass is
off in your area. That gets you into the ballpark.
Using a 10" Schmidt Cassagrain The N star isn't even in the field of
view at true north with a low power eyepiece. Here a magnetic compass
is only a few degrees off. Within a 150 miles it may be off 30 degrees
or more.
73
Roger (K8RI)
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