[aprssig] THD7AG and TCP/IP over radio

Stephen H. Smith wa8lmf2 at aol.com
Mon Jul 2 17:05:51 EDT 2007

Andrew Rich wrote:
> Has anyone tried using a THD7AG with the windows TCP/IP drivers ?
> Do you have to run the HT in KISS ?
> Cheers
> Andrew VK4TEC

The Tasco TNC-on-a-chip used in the Kenwood radios is notorious for 
instability in the KISS mode. The main problem is that it has FAR FAR 
too little ram to buffer incoming and outgoing strings of data.   It can 
barely handle the relatively short strings of APRS one-liner packets.   

The Kenwood TNC is almost unusable for conventional connected packet, 
KISS or otherwise, because of buffer overruns on packets of over 100 
bytes or so, let alone the added overhead of TCP/IP over packet.


Stephen H. Smith    wa8lmf (at) aol.com
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