Re: [44net] TNC for Raspberry pi that support 9600 Baud ?

Hello Ronen, Its not clear what you want to do with this new packet setup be it an APRS setup, enable full classic packet connectivity, etc. but additional software will be required. The use of a physical TNC (TNCpi, KPC3, etc) or a virtual TNC (Direwolf, soundmodem, etc) will still require some software to be installed and configured. I'm sure lots of people here can help (I'm willing to help) but I'd argue, I'd take the Q&A to RaspberryPi-4-HamRadio(a)groups.io as that's a more appropriate list than this one for AMPR connectivity discussions. Direwolf is an interesting animal. It supports: - Multi-platform: Windows, Mac, Linux - supports the 300bps, 1200bps AFSK modes - supports 2400bps and 4800bps PSK modes (some try to be compatible with older MFJ modes) - supports FSK modes up to 38400bps (requires flat 192Khz sound cards and ultra wide radio passbands) - supports multiple off-frequency decoders to decode off-frequency stations - supports multi-bit error recovery with tunable training heuristics around APRS traffic vs. classic packet - KISS connection to the OS via a virtual serial port (/dev/pts system) - KISS connection to any network host via KISS-TCP - Has complete AGW connectivity for connected and connectionless AX.25 traffic - Has a complete AX.25 v2.2 (not v2.1) stack which is accessible via the AGW network connection - gives Windows and Mac users a full AX.25 stack - Has a 90% complete APRS stack for various beacon types, GPS support, SmartBeacon, telemetry, etc. but no APRS messaging today - Has an APRStt (touch tone) stack to support DTMF-enabled radios to send position reports from non-APRS radios At minimum, just a USB sound card ($5 US) and some way to key up your radio. The Direwolf UserGuide details all this for you. On a Raspberry Pi, a simple transistor circuit and a GPIO pin off the Pi is all you need. If you want to run TCP/IP, you'll want to use the LInux AX.25 stack and since it's in Linux, ANYTHING is possible at that point. It will just work once you get all the routing right. I've done this and I can help you here. I will warn you that unless you're going to run an RF link at 9600bps, it's VERY VERY slow. Ping times @ 1200bps AFSK is usually 1200 to 1500ms alone and simple TELNETs work but it's painful. Well, the Direwolf User Guide and the other docs at https://github.com/wb2osz/direwolf/tree/master/doc are VERY good. I encourage you to skim over them. For a cookbook approach, you might like my Packet on Raspberry Pi document at: http://www.trinityos.com/HAM/CentosDigitalModes/RPi/rpi2-setup.html it covers the installation of Raspbian, hardening it, getting Direwolf, Linpac compiled, installed, configured, as well as optional topics like adding an RTC chip via I2C, adding a 20x4 LCD display, using Bluetooth to a Kenwood D74 TNC, etc. Every single command and expected output is given so ANYONE should be able to follow the steps. There are other good guides out there on the Internet as well but they are mostly point topics and you have to piece them all together to make a complete system. My doc is top to bottom with a common example --David KI6ZHD