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| A coil-free dual-conversion superhet SDR built from two NE612 mixers and a few passives. The first mixer down-converts to a 455 kHz IF for s...

by Taetz

| Take a look at a through-hole rebuild of Elektor's low-distortion, 1-kHz analog generator from July 2024. The same proven circuit now fits a...

| A full-featured variable frequency oscillator using only an ESP32 and a Si5351 clock generator linked by four I2C wires, no LCD, no rotary e...