[na-user] Beam headings

David A. Pruett David A. Pruett" <k8cc@ix.netcom.com
Sat, 10 Apr 1999 23:29:46 -0400

We had very few complaints about beam headings until I implemented a new
algorithm passed along by N6TR that included distance calculations.  Tree
and I wanted to be in agreement for the W1BB contest.

To be honest, I have no idea how the algorithm works - it is full of trig
functions, identities, etc.

If someone will test their cases and provide a list of problem situations,
I'll take a look at fixing the code.  I will need:

1. Your latitude and longitude exactly as entered into NA.

2. The problem country.

3. The latitude and longitude of the problem country as defined in your

#3 might not be necessary, since this data does not change regularly,
however it ensures that we don't have a bad country file causing the


Dave Pruett, K8CC
DATOM Engineering

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