George, you may like to comment on which of these packages take the second
harmonic correction into account. Including or omitting the correction
makes several minutes difference, which is all important for stations near
the tropical zone, as the sunrise openings are often very short.
Earl, K6SE, showed me how to do this 2 years ago, and I would be pleased to
pass on Earl's formula to those who wish to write their own program. (Or
contact Earl direct)
73, Greg, ZS5K
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