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[aprssig] A TNC2 (clone) question

Stephen H. Smith wa8lmf2 at aol.com
Mon Nov 14 17:30:03 UTC 2011


On 11/14/2011 12:27 PM, Lynn W. Deffenbaugh (Mr) wrote:
> On 11/14/2011 12:17 PM, Stephen H. Smith wrote:
>>
>> For example,  WIDE2-2 becomes WIDE2-1 which becomes WIDE2-0 as a packet 
>> passes through 3 successive digis.
>
> A bit nit-picking here, but I count only TWO digis in the example.  The first 
> hears the WIDE2-2 and transmits a WIDE2-1.  The second hears the WIDE2-1 and 
> transmits the WIDE2-0 which is more commonly shown as WIDE2 (lack of a -SSID 
> implies -0).  In addition, the second digi should also set the "used" bit in 
> the AX.25 header because it decremented to zero which is typically then shown 
> as WIDE2*.
>

I  was actually thinking about the WIDE1-1.WIDE2-1 scenario for three hops when 
I wrote this,  and forgot about the WIDE1-1 part......





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