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home | newest check | boards | help index | log | ps | userlogin | send sysop | slog | status forward | bcm news | users | version | remove cookieHP2DFA > TECH 06.10.26 22:50l 31 Lines 1342 Bytes #6 (0) @ WW BID : 3552_HP2DFA Subj: FREEDV RADE: AI MACHINE LEARNING DIGITAL VOICE FOR HF Path: JH4XSY<IW0QNL<HB9ON<HB9ON<PI8ZTM<VE3CGR<VE2PKT<PY2BIL<HP2DFA Sent: 261006/1343Z 3552@HP2DFA.#COL.PAN.CEAM BPQ6.0.24 FREEDV RADE: AI & MACHINE LEARNING DIGITAL VOICE FOR HF TECHNICAL AND DIGITAL VOICE BULLETIN (WIA / FREEDV) RADIO AUTOENCODER (RADE) HF OVER-THE-AIR TESTING VALID: 06-OCT-2026 ONWARDS ISSUED VIA BPQ32 NODE HP2DFA-5 1. OVERVIEW AND TECHNICAL BREAKTHROUGH: - DEVELOPER: FREEDV PROJECT / DAVID ROWE (VK5DGR) & JEAN-MARC VALIN. - CONCEPT : COMBINES MACHINE LEARNING (AI) WITH CLASSICAL DSP TO TRANSMIT SPEECH OVER DIFFICULT HF CHANNELS AT SNRS AS LOW AS -2 DB. - RADE V1 : 8 KHZ AUDIO BANDWIDTH IN 1500 HZ RF BANDWIDTH, 4 DB PAPR. WORKS VIA STANDARD SSB TRANSCEIVER AND FREEDV-GUI (PC / RASPBERRY PI 4 ). 2. RADE V2 DEVELOPMENT & OVER-THE-AIR TESTING: - IMPROVEMENTS: ~3 DB PERFORMANCE GAIN OVER V1; REMOVES PILOT SYMBOLS; USES AI FOR FRAME SYNCHRONIZATION AND FINE TIMING. - TESTING MILESTONE: O.T.A. TEST CAMPAIGN ANNOUNCED (SEP-24-2026) USING FREEDV-GUI 3.0 BETA FOR REAL-TIME PUSH-TO-TALK (PTT) TESTING. 3. OPEN SOURCE & SUSTAINABILITY: - LICENSING: FREEDV GUI UNDER GNU LGPL 2.1; RADE UNDER 2-CLAUSE BSD. - SPONSORSHIP: SUPPORTED BY ARDC GRANT VIA SOFTWARE FREEDOM CONSERVANCY. - TEAM : INTERNATIONAL LEADERSHIP INCL. VK5DGR, K6AQ, VK3TPM (USING AGENTIC AI FOR PYTHON-TO-C CONVERSION), K5WH, K0PFX, AND G8SEZ. INFO & DOWNLOADS: WWW.FREEDV.ORG MAIL: HP2DFA@GMAIL.COM / HP2DFA-5@BPQ32 73 DE HP2DFA-5 / BPQ32 NODE PANAMA
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