[aprssig] WIDEn-N rocks...
Robert Bruninga bruninga at usna.eduMon Feb 14 20:21:49 UTC 2005
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Here are some more thoughts on WIDEn-N versus W,W. I used to say that a dupe or so from R,W and W,W paths were part of APRS to help improve deliverability. That is, if there was a collision, then there would be a dupe to help get that packet where it needed to go. I was worried about the perfect dupe elimination of WIDEn-N undermining reliabilty by only having one "egg in the basket"... But, turns out that WIDEn-N suffers no loss in the multiple-egg's in the basket scenario. Because if there is a collision such that digi C does not hear the packet from Digi B, then it porbably still has a few more chances to hear it from D, E and maybe F. But still, it only has to hear it once, and then it is guaranteeed to only digipeat it once. No dupes, yet multiple opportunities for better delivery reliabiilty... WIDEn-N is the way to go... And SSn-N is the way to go if you need a bigger hop because of where you live relative to the center of the action, but dont need to QRM across the border... de WB4APR, Bob
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