Ham radio has accumulated decades of digital modes — some from the CW era, some invented in garages, and some developed by university research programs. The terminology is genuinely confusing if you're new. This guide cuts through it: here's what each major digital mode does, what makes it worth knowing about, and what gear you need.
The main modes, explained
DMR — Digital Mobile Radio
DMR is digital voice — the same idea as analog FM repeaters, but the audio is compressed and transmitted as data. The advantage is efficiency: one 12.5 kHz channel carries two simultaneous voice conversations via time-division. DMR uses talkgroups to organize traffic (think of them as rooms in a building) and color codes to identify specific repeaters, similar to how CTCSS tones work on analog.
The practical result: DMR repeaters linked via the internet (Brandmeister, DMR-MARC) let you talk to hams worldwide on local infrastructure. Your radio needs to be programmed with a "code plug" — a configuration file containing the repeater's frequency, color code, and the talkgroups you want to access. The AnyTone AT-D878UVII Plus (~$200) is the standard recommendation for a first DMR HT.
FT8 — Franke-Taylor 8
FT8 is a weak-signal HF data mode developed at Princeton in 2017 that upended the hobby. It operates on 15-second transmission cycles and can decode signals 20+ dB below what human ears can hear. The result: you can make contacts across continents on 5 watts with a modest wire antenna, even when propagation is poor. It's not a conversation — each exchange is just enough information to log a valid contact — but for DXing and chasing countries, it's extraordinary.
To run FT8 you need: an HF transceiver with a USB audio interface (the IC-7300 and most modern radios have this built in), a computer running WSJT-X (free), and an antenna. No sound card cables required on modern rigs. The FlexRadio FLEX-8400 is designed specifically for this kind of use, but any modern HF radio works fine.
APRS — Automatic Packet Reporting System
APRS is a digital packet system that carries real-time positional and status data over radio — typically on 144.390 MHz on 2 meters. It's used for vehicle tracking, weather station reporting, message passing, and event coordination. Your position shows up on aprs.fi, a live map of APRS activity worldwide.
To get started: an HT with a built-in APRS radio (the AnyTone AT-D878UVII Plus has it, as does the Yaesu FT3D) or a smartphone running APRSdroid connected to your radio's audio port. APRS digipeaters relay your packets around the network and into the internet gateway (iGate) system automatically.
Winlink — Email Without the Internet
Winlink lets you send and receive email over radio using amateur frequencies — no internet required on the radio end. A Winlink gateway station receives your message over RF and injects it into the internet email system on the other side, or can relay messages entirely over radio in an internet-denied environment. It's the standard for emergency digital communications and is used heavily by ARES and maritime operators.
Getting started is free: download Winlink Express (Windows), connect your computer to your radio, and find a gateway in your area. Works on HF and VHF/UHF with the right setup. The learning curve is real but the capability is genuinely useful.
WSJT-X Modes (FT4, JT65, WSPR, MSK144)
WSJT-X is the software suite that includes FT8 and several related modes. WSPR (Whisper) is a beacon mode that sends your call sign and location at very low power to measure propagation — your signal gets spotted and mapped on wsprnet.org. FT4 is a faster version of FT8 for contest use. JT65 predates FT8 and is used for moonbounce (Earth-Moon-Earth) contacts. MSK144 is for meteor scatter on 2 and 6 meters. All run from the same free software download.
Where to start if you're new to digital
The easiest entry point as a Technician is DMR — it works on the same VHF/UHF bands you already have access to, the radios aren't expensive, and the experience of talking to someone in Europe through a local repeater is genuinely eye-opening. Buy an AnyTone, download a code plug for your area, and check in to a talkgroup.
If you have or plan to get a General license and want to work HF, FT8 is the most accessible gateway to DX. Install WSJT-X, connect your radio, and you can be making contacts to other continents within an hour of getting everything configured. It doesn't require contest-grade antennas or high power — it rewards patience and a decent antenna more than brute force.
Honest picks for DMR handhelds, HF digital stations, and the radios that make digital modes genuinely easy.
See the gear guide