Has anyone ever used DTMF to send telemetry ? Example A278B015C027 Wind 278 deg Speed 015 Temp 027 Or even APRS ? 27*34*45A = 27.34.45B (assuming * = . and A = North and B = South) 153*06*21C = 153.06.21E ( assuming * = . and C = West and D = East)