double balanced mixer

The diode ring double balanced mixer is a simple device which can be used in receivers and transmitters. In this article, we’ll be testing a homebuilt mixer for a 20m transmitter. The mixer consists of four Schottky diodes – I used BAT28 diodes – and two coils wound on toroids. The coils need to be trifilar wound and I used 10 turns of 22AWG on… Read More »Diode Ring Double Balanced Mixer