Hardware

• N2ADR's Companion Filter Board
  • Production Release
  • KiCAD Design Files
• N2ADR's I/O Board
• N2ADR's Wifi Buffer
• DB9MAT's HL2-MRF101
• M5EVT's HL2_XVTR
• M5EVT's HL2 external PA monitoring
• DL9LJ's HL2 with 300W PA
• EA3IGT's HL20PA70
• PA3GSB's Radioberry with tight Raspberry Pi integration
• ZL2APV's Diode-Switched Filter Board
• EA4GPZ's Hardrock-50 Amp Setup
• Hardrock-50 interface kits from AK3Q
• Alex Pressl's HL2 Breadboard
• Alex Pressl's HL2 I2C Extender
• 5B4AMO's HL2 to EB300/EB500 Interface
• Various Efforts at Electrolab in France
  • Alexandrie Filter Board
  • EER and ET
• N6QW's blog with Hermes-Lite review and enhancements
• MI0BOT's Band volts interface to XPA125B amp
• KP4RX's HL2 to XPA125b Interface XPA125b Automatic Band Switching and remote control capability
• DL1BZ's XPA125B control for HL2 Auto band select and isolated PTT switch for XIEGU XPA125B and HL2 with ESP32 T-Display
• DL1EGL 3D Enclosure pihlSDR
• W3URL 3D Enclosre

CW Resources

• LinHPSDR CW and Logging Setup Document
• Teensy as CW Interface
• A SW Keyer for remote operation with video
• Serial Port and MIDI Speed Measurements
• Group Threads 1 2 3 4 5 6
• SparkSDR Threads 1 2
• SDR Console with sidetone
• JI1UDD's Expansion Boards and Gateware Forks 1 2 3 4
  • VU2ZAZ's updates for hl2b5 and later Hermes-Lite

Test and Measurement

• IN3OTD's Experiments, Tests and Measurements
• Also see the Performance Tests page
• DL1YCF web page with additional Hermes-Lite 2 reports

Presentations and Other Documentation

• PA3FUN presentation
• N6QW blog
• KF7O presentation ( slides )
• forum.sdr-radio
• M0SPN
• EA4GPZ on external 10 MHz reference from GPSDO