[aprssig] ARPS physical layer

Matti Aarnio oh2mqk at sral.fi
Thu Sep 16 08:12:03 EDT 2010

On Thu, Sep 16, 2010 at 07:38:38AM -0400, Wes Johnston, AI4PX wrote:
> You also need to be aware than KPC tncs and TAPR clone tncs treat the
> "has been digipeated" flag differently.  I can't remember which is
> which, but one of them marks only the LAST digipeater field, the other
> marks EACH digipeater.  Your code needs to simply look for the last
> digipeater marked as digipeated.
> Wes

I think you are confusing how AX.25 bits go, and what is shown on the text dump.
TNC2 shows only last H-bit on digipeater fields, but all bits up to and including
the indicated one are set in the RF.

73 de Matti, OH2MQK

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