RCA Verstärker Relais Keying Kabel 8 Pin Mini DIN für Yaesu HF Radio FT-991A
RCA Amp Amplifier Relay Keying Cable 8 Pin Mini Din For Yaesu HF Radio FT-991A. FT-891, FT-991A -- TUN/LIN jack. The amplifier keying circuit appears on both linear and tuner jacks on radios shown below.