VarAC
20m Band- Real-time keyboard-to-keyboard chat over HF
- Store-and-forward messaging via beacon system
- File and image transfer capability
- Automatic station discovery and CQ calling
- VMail relay for asynchronous message delivery
- Built-in logging and PSKReporter integration
- Uses VARA HF modem for reliable data transfer
Winlink Express
6m Band- Full email over radio when internet is unavailable
- Compatible with VARA, ARDOP, and Pactor modems
- ICS/FEMA form support for emergency communications
- Peer-to-peer and relay station (RMS) connectivity
- Weather bulletin and forecast retrieval
- Position reporting capability
- Automatic message routing via global relay network
user@w2jkt-station:~$ systemctl status aprx
● aprx.service - APRS Digipeater and iGate
Loaded: loaded (/lib/systemd/system/aprx.service)
Active: active (running)
Docs: man:aprx(8)
Main PID: 1234 (aprx)
Tasks: 4
Memory: 2.1M
APRS Digipeater ready
Interface: 2m (144.390 MHz)
Interface: 70cm (445.100 MHz)
iGate: Connected to APRS-IS
Packets digipeated: 1847
iGate packets: 3521
Loaded: loaded (/lib/systemd/system/aprx.service)
Active: active (running)
Docs: man:aprx(8)
Main PID: 1234 (aprx)
Tasks: 4
Memory: 2.1M
APRS Digipeater ready
Interface: 2m (144.390 MHz)
Interface: 70cm (445.100 MHz)
iGate: Connected to APRS-IS
Packets digipeated: 1847
iGate packets: 3521
user@w2jkt-station:~$ _
APRX
2m & 70cm Bands- Linux-based APRS digipeater and iGate daemon
- Lightweight headless operation on station computer
- Multi-interface support (2m and 70cm simultaneously)
- APRS-IS internet gateway connectivity
- Automatic packet digipeating for local coverage
- Position reporting and telemetry forwarding
- Continuous unattended 24/7 operation
VARA HF
High Speed Data Modem
VARA High Speed Modem
HF Backbone- High-speed HF data modem protocol
- Adaptive data rates up to 8490 bps on HF
- Backbone modem for VarAC and Winlink operations
- Automatic link quality optimization
- Low-latency, error-corrected data transfer
- Available in HF and FM variants
- Widely adopted standard in amateur digital comms