High Duty Cycle, turn down the power! Some AutoTuners have Digi power limits Volume-sensitive (driving radio direct, ALC) Some radios have a “Digital” mode, won’t take USB audio if not in Digi Mode Sometimes tricky setup for PC Interface (You kept the manual, right?) Use ferrites to reduce hardware issues Limitless potential!įLDigi Intro Decoded Text Out Waterfall and Current Freq (Audio)įLDigi Intro Current Mode & VFO Freq Current Freq and Log Info Note: Current Frequency = (VFO Freq ±Offset) + for USB, - for LSBġ0 Waterfall Signal Identification: Carrier Wave (CW) / Morse RX/TX Control Signal PTT Pin/Gnd PC “Mic” or “Line In” Radio RXOut Speaker PC “Speaker” Radio TX MIC In 1 Overview of Digital Modes, FLDigi and N1MM Logger+Ĭollin Howe AA0CN Rochester Amateur Radio Club - Relevant Links on Last SlideĢ Digital Modes Mechanism of communication using discrete signals (Non-Infinite, repeatable) Often uses specialized hardware/software (Teletype Machine, Modem, Computer) Can be much faster than voice (at the expense of reliability) Can be much slower (can work in low-signal conditions at expense of speed) CW: Simplest “Digital” mode, high reliabilityĭigital Modes often use Computer through a purpose-built interface using the computer’s Sound Card as a modem Many Radios have USB control built-in Signalink USB control interface Homebrew COM / Sound Card interface: PTT On/Off, RX Audio, TX Audio KF5INZ Easy Digi Interface: Or just use speaker and mic, and manually switch TX/RX!
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