[aprssig] APRS messaging issues

Steve Dimse steve at dimse.com
Tue Jan 6 09:47:15 EST 2015

On Jan 6, 2015, at 8:09 AM, Jason KG4WSV <kg4wsv at gmail.com> wrote:

> Bob, I don't disagree with your suggestions for making effective use of APRS messaging, but let's get the facts straight. Why do you claim ACKs are less reliable than messages?
ACKs are not ACKed and they aren't resent. So a message is sent multiple times until an ACK is received or it times out. An ACK is sent once for each received message.

So two stations nearby on a clear channel the ACK may be slightly more likely to be received because they are shorter, but in the real world where there is a decent chance for packet loss Bob's claim has validity. 

Steve K4HG

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