[WT-support] Band map info

[Georgek5kg at aol.com]

What is the purpose of the numbers shown at the bottom of the band  
map...such as, 21S, 18N, 15C?  I can't find an explanation in HELP for  this.
 
Tnx, Geo...
 
George  Wagner, K5KG
941-312-9420
941-400-1960  cell



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