Yaesu Amplifier Keying and TX inhibit Cable 8-Pin mini DIN FT991 FT817 FT857
This cable has PIN 2 TX ground (amplifier keying) on RED RCA connector. YAESU FT-991, FT-991A, FT-857, FT-817, FTDX-1200 and many other Yaesu radios, check your manual! Want to protect your radio keying circuit?.