All posts in the 'HAM radio' Category



WB8WGA’s Simple Inexpensive TNC

 

WB8WGA?s Simple Inexpensive TNC
A terminal node controller (TNC) is a device used by amateur radio operators to participate in AX.25 packet radio networks. It is similar in function to the Packet Assembler/Disassemblers used on X.25 networks, with the addition of a modem to convert baseband digital signals to audio tones.This TNC implements only parts of the AX.25 protocol, to encode and decode Unnumbered Information frames, used in the APRS system.[more]

Posted in : HAM radio

RF Communication Between BASIC Stamps Using 2-meter HT Radios

 

RF Communication Between BASIC Stamps Using 2-meter HT Radios
This example uses Tigertronics RTX-12 Radio Modem and Parallax BASIC Stamp 2, though it may be substituted with any microcontroller. The example includes two sets of programs: a simple version that lacks error checking and a more complete example with checksums. [more]

Posted in : Basic Stamp | HAM radio