Hallo Uwe, LF According to the ITT ST 86A manual I have (Same as the DEBEG 7121) the antenna matching range is: 250pF/2ohm to 750pF/4ohm, with extension coil down to 200pF/10ohm BR Paul-Henrik, OH1LS
Question: in what impedance range can the built in Tuner match antennas ? I assume, that the range is similar to HAGENUK MS 400, -- abt 3 Ohms ? Any help welcome 73 Uwe, DK1KQ