FTRestore

The other evening, I decided it’d be a good idea to update my FT-991 with the latest firmware. Aside from this being a good idea generally, to keep up with. read more…

Why 50 ohms?

Coaxial cables, antennas, amplifier inputs and outputs, typically have either a 50 ohm or 75 ohm characteristic impedance. Why? It all comes down to the characteristic impedance value for maximum. read more…

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About AD5GG
AD5GG works in the real world primarily as a board-level RF designer in the UHF (300 MHz - 6 GHz) range. Occasionally, he posts articles on this very site. Sometimes they're even worth reading.