VarAC
Modem & Data
Management
OpenVARA connects directly to ICOM Ethernet data, supports multiple radios and frequencies simultaneously (HF through 1.2 GHz), and integrates with APRS, Winlink, and Pat — all from your browser.
Built for serious operators
Native ICOM Ethernet Integration
OpenVARA connects directly to ICOM radios over your local network using the native ICOM Ethernet protocol. No serial adapters, no virtual COM ports — just plug in and transmit. Works with IC-7300, IC-7610, IC-9700, and more.
Read the docs
Multiple Radios, Multiple Frequencies
Run simultaneous VarAC sessions across multiple ICOM radios on different frequencies — all from a single web interface. Supports HF through 1.2 GHz (radio-dependent). Perfect for EmComm deployments, ARES/RACES operations, or high-throughput digital stations.
Read the docsFull APRS Support
Integrated APRS packet handling lets you send and receive position reports, messages, and objects. OpenVARA bridges your ICOM radio to the APRS-IS network with zero additional hardware.
Read the docsWinlink & Pat Email Over Radio
Send and receive Winlink email messages through your ICOM radio using the VarAC HF, VHF/UHF, or SAT modem. OpenVARA handles the modem layer so Winlink Express or Pat can connect seamlessly.
Read the docsFull capability matrix
Web-Based UI
No software install required. Access from any browser on your network.
VarAC HF
High-performance HF digital modem
VarAC VHF/UHF/SAT
VHF, UHF & SAT modem — up to 1.2 GHz
Multi-Radio
Simultaneous sessions across radios
ICOM CI-V
Native Ethernet protocol, no adapters
APRS
Packet position & messaging
Winlink & Pat
Email over radio via VarAC
Open Source
Community-driven development
Downloads coming August 21, 2026. Check back on release day to get the latest build.
Ready to get
on the air?
OpenVARA is free and open-source. Get up and running in minutes with our step-by-step setup guide. No special hardware required beyond your ICOM radio and a network connection.