Part of our Emergency Communications and Preparedness guide.
I’ve explained what Winlink is and why EmComm operators rely on it, but I’ve never walked through actually setting it up. This is that post: getting RMS Express and VARA installed and sending a real message through the system for the first time.
What You Need
A Winlink account (free, register on their site), RMS Express software, the VARA modem software matching your mode (VARA HF for HF work, VARA FM for VHF/UHF), and a sound card interface between your radio and computer. If you’re already set up for FT8 with a Digirig or similar interface, you largely have the hardware half of this solved already.
Installing and Registering
Install RMS Express first, register your callsign with Winlink through the software, then install VARA and point RMS Express at it as your TNC. VARA’s free version is bandwidth-limited but plenty for learning the system and sending routine traffic.
Connecting to a Gateway
RMS Express has a channel selector that lists nearby Winlink gateway stations along with their frequencies and expected reliability. Pick one with good signal reports for your location, tune your radio to match, and let VARA handle the actual handshake. First connections can take a few tries while you dial in audio levels between the radio and your interface.
Sending Your First Message
Compose a simple test message to your own Winlink address or a Winlink test address, connect to your chosen gateway, and let the software handle the transfer. Once it completes, check the outbox to confirm it actually sent rather than just queued.
Why This Matters for EmComm
Winlink gives you email-style messaging over ham radio when internet and cell service are down, which is exactly the scenario where it earns its keep. Practicing this now, when nothing’s actually wrong, is the only way it’ll work smoothly when something is.