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[aprssig] Q: Vicious digipeater

Heikki Hannikainen hessu at hes.iki.fi
Sat Oct 24 07:37:46 UTC 2009


On Sat, 24 Oct 2009, Matti Aarnio wrote:

>  2) If no other transmission of the packet is heard during the probation delay,
>     the packet is viable for retransmit per normal digipeating rules.
>
> Observed behaviour is such that in urban environment it will cut down the packet
> transmissions by such viscous digipeater by about 90% (80 to 95). 
>
> Btw: I did not invent this, but apparently I was first to implement and measure it.

Actually, it is implemented in the 'digipeater' profile of the hamdr 
tracker (relay_viscosity config option). It's not implemented in the 
'tracker' profile which actually contains the smarter WIDEn-N digipeater, 
and which is really used on APRS digipeaters here.

   - Hessu




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