"rf-resistant"-tagged Public Circuits

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M-90D TO FT-2980 Impedance Matching and Gain Circuit (Using BC547C) PUBLIC Small circuit to impedance match a Yaesu M-90D microphone to a Yaesu FT-2980. This circuit has a preamp based on BC547C set for adequate gain. (Use "mic gain" 4-6 on the FT-2980) by w6wwr | updated September 28, 2025 2-meter   amateur-radio   ft-2980   gain   ham-radio   impedance-matching   m-90d   preamp   rf-resistant   yeasu

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