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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 04.10.26 09:15l 39 Lines 1565 Bytes #6 (0) @ WW BID : 2719_HP2DFA Subj: HIDDEN SDR CAPABILITIES DISCOVERED IN ESP32 CHIPS Path: JH4XSY<IW0QNL<IZ3LSV<IW8PGT<LU4ECL<K1AJD<VE3CGR<PY2BIL<HP2DFA Sent: 261003/2306Z 2719@HP2DFA.#COL.PAN.CEAM BPQ6.0.24 Title: HIDDEN SDR CAPABILITIES DISCOVERED IN ESP32 CHIPS SB ALL @ PANAMA HIDDEN SDR CAPABILITIES DISCOVERED IN ESP32 MICROCONTROLLERS TECHNICAL AND INNOVATION BULLETIN RAW IQ BASEBAND SAMPLING AND APPLICATIONS AT 2.4/5 GHZ VALID: 03-OCT-2026 ONWARDS ISSUED VIA BPQ32 NODE HP2DFA-5 1. TECHNICAL DISCOVERY: - MULTIPLE PROJECTS (ESPARGOS AND INDEPENDENT DEVELOPERS) DISCOVERED AN UNDOCUMENTED FEATURE IN ESP32 CHIPS THAT BYPASSES FIXED WIFI/BT STACKS TO CAPTURE RAW BASEBAND IQ SAMPLES. - COVERAGE: 2.2 - 2.7 GHZ (AND 4.8 - 6.0 GHZ ON ESP32-C5). - SAMPLE RATE: UP TO 80 MS/S. - ANALOG BANDWIDTH: 13 TO 54 MHZ DEPENDING ON CHIP MODEL. 2. APPLICATIONS AND STREAMING LIMITATIONS: - GENERAL OUTPUT: DATA OUTPUT IS BANDWIDTH-LIMITED ON MOST CHIPS, EXPORTING SNAPSHOTS (USEFUL FOR SPECTRUM ANALYZER FUNCTIONS). - ESP32-S31 EXCEPTION: STREAMS CONTINUOUSLY UP TO 16 MS/S VIA GIGABIT ETHERNET (SOAPYSDR DRIVER FOR GNU RADIO AND GQRX COMING SOON). - ESPARGOS PROJECT: ENABLES PHASE-COHERENT DIRECTION FINDING ON ANY SIGNAL WITHIN THE 2.4 GHZ BAND. - ESP-WEBSDR: WEBPAGE ALLOWS DIRECT FIRMWARE FLASHING FROM BROWSER TO VIEW LIVE SPECTRUM AND WATERFALL. 3. COMPLEMENTARY FPGA DEVELOPMENTS: - /U/H0M3US3R PROJECT (REDDIT/GITHUB): USES AN FPGA AS A USB3 FRONT-END WITH AN ESP32-S3 FOR CONTINUOUS IQ STREAMING TO PC. - POTENTIAL: ONCE CLOCK PHASE NOISE ISSUES ARE RESOLVED, IT COULD SERVE AS A STANDARD GENERAL-PURPOSE SDR (LIKE RTL-SDR) IN 2.2-2.8 GHZ WITH UP TO 80 MHZ BANDWIDTH. MAIL: HP2DFA@GMAIL.COM / HP2DFA-5@BPQ32 73 DE HP2DFA-5 / BPQ32 NODE PANAMA
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