Arduino Uno and Fast PWM for AFSK1200

  Audio Frequency Shift Keying Telemetry data for my balloon flight will be transmitted onto the APRS (Amateur Packet Reporting System) network, which is a well established network of Amateur Radio Operators here in the US. Data intended for the APRS network is transmitted using the AX.25 protocol (will cover this in a later post) using something called … Read more