Technical Packet

This is a list of articles and specifications about packet radio.

1998 version of the AX.25 V2.2 specification is here:
AX25.2.2-1998.pdf

10 Sept 2017 version of the AX.25 V2.2 specification is here:
AX25.2.2-Sep 17-1-10Sep17.pdf

The NET/ROM protocol
thenetromprotocol.pdf

G8BPQ LINBPQ Monitor mode
builders:g8bpq:monitor node command analysis.
builders:g8bpq:monitor L2 retries and L3 chat fail.

Paper on APRS discusses low level packet TNC operation and specific modifications made to TNC designs to support modern APRS.
http://digitalcommons.calpoly.edu/theses/1341/
While it is primarily focused on APRS, the concepts and issues it discusses are directly applicable to packet.

W2FS's 1998 article discusses using a cheap CPU to send packets.
DCC1998-PICet-W2FS.pdf

W2FS’s 2000 article on receiving packets with a cheap CPU
DCC2000-PIC-et_Radio_II-W2FS.pdf

W2FS's 2003 article about the TNC-X (which is modified to be the TNC-PI a few years later)
https://web.tapr.org/meetings/DCC_2003/DCC2003-TNC-X-W2FS.pdf

Article on the G3RUH modem for AMSAT
http://www.amsat.org/amsat/articles/g3ruh/109.html

Article on KD2BD modem for AMSAT
https://www.amsat.org/amsat/articles/kd2bd/9k6modem/

WD6EHR Article on radio interfacing for 9600 baud packet
9600MAN.TXT