Credits

Full file in the repo: CREDITS.md. Lyra is GPL-3.0-or-later. Ported engines (WDSP, ChannelMaster / Thetis TX baseline, fldigi CW receive) are attributed there file-by-file.

Reference projects (studied, not copied)

These hosts are cross-checked when Lyra needs ground truth on the wire. No code is incorporated from them.

Project	Who	Why Lyra looks
DeskHPSDR	Heiko (DL1BZ)	Protocol 2, BrickSDR / Angelia DDC maps, PureSignal host path, analog / Band Volts, portable I/O
pihpsdr	John Melton, G0ORX	HL2 protocol (PA enable, ATT-on-TX)
Quisk	Jim Ahlstrom	HL2 C&C register decode
linHPSDR	—	HL2 protocol fidelity
Hermes Lite 2 gateware	Steve Haynal, KF7O + community	FPGA RTL as wire-byte ground truth (hl2b5up_ak4951v4)

Special thanks

• Heiko (DL1BZ) — again: DeskHPSDR is the Protocol 2 / Brick reference we keep coming back to. Time, builds, and straight talk whenever Lyra needed a sanity check.
• Anton (linoobs) — BrickSDR / Brick3SDR FPGA images and flash help so operators can run Protocol 2 (the layout Lyra actually transmits on).
• The openHPSDR community, TAPR, Dr. Warren Pratt (NR0V), Reid (MI0BOT / GI8TME), Richie Samphire (ramdor), Laurence Barker, and the Hermes Lite 2 community.

Contributors

• Rick Langford (N8SDR) — project author, architecture, bench operator.
• Brent Crier (N9BC) — co-contributor and tester; DeepFist neural CW.
• Timmy Davis (KC8TYK) — tester (v0.1 tester flight).
• W5UDX — DSP2024P Plate Reverb presets and verification.