[aprssig] K6RPT-11 Sunrise @ altitude...

Steve Noskowicz noskosteve at yahoo.com
Wed Dec 14 01:41:00 EST 2011

 @ 110,000 the radio horizon is abt 400 miles away (perfect earth).  Since ground speed of sun is 1000 MPH ... when the sun hits the radio horizon, it also hits the radio...
Therefore:  400 / 1000 is .4 hours or 24 minutes earlier.
I think I did that correctly...?
73, Steve, K9DCI USN (Vet) MOT (Ret) Ham (Yet)
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