Assembly of microphone preamplifier
Next phase: Quasi oven circuit assembling Block Diagram | Phase 1: Power Supply | Phase 2: Microcontroller circuit | Phase 3: Local osciallator Si570 | Phase 4: G59 USB connection | Phase 5: G59 Receiver assembly | Phase 6: G59 Input-Output HP-LP Filters |Phase 7: Band pass filters and control logic | Phase 8: CW monitor | Phase 9: Transmitter circuits assembly | Phase 10: Microphone preamplifier | Phase 11: Si570 Quasi oven circuit | Phase 12: G59 Receiver Image Calibrator | GBOX assembly
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