[aprssig] APRS CSMA Settings

Andre aprs at pe1rdw.demon.nl
Tue May 20 13:26:51 EDT 2014

op 20-05-14 19:04, Robert Bruninga schreef:
> You are correct.  Digis (not on balloons or aircraft or the mountains
> surrounding LA) should wait for the channel to clear (not carrier squelch,
> but data-clear) and then transmit immediately (Dwait=0) whereas all other
> stations should have a Dwait... (hummh... of what??? What is the default?
> I hope it is not zero for every TNC out of the box?)
> Bob
If I remember correctly the default is 30 (300 ms) 5 more then the 
default TXD of 25 (250 ms)
Ofcourse this does not mean every tnc will start transmitting after 300 
ms if the channel is clear because the PPers check has to pass as wel.

73 Andre PE1RDW

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