how to find free 9k6 TNC

[lap]

hello everybody:   I am using redhat 6.0 and 5.2 to built ax.25 network. I want find some 9k6 TNC to use. That do not soundmodem. That must free. That must using linux. The linux have that drvier.    Could you tell me, please? I wish to see the reply.   P.S. sorry my english      73 VR2YZE lap