Yaesu FT-991 "TX INH" question


Looking on specs on the TX INH input (pin 8) to the TUN/LIN Din socket on the rear of the Yaesu FT-991.

Active High? Active Low? Voltage level? Timing?

Bill Howard:
Kind of just went through a similar thing with my new 991A. Pin 8 (inhibit) appears to be low for cabling to an Ameritron ARI-500 amplifier interface. It is connected to pin 3 (ground) in this cable so I would have to assume that INHIBIT would be active when 8 is high. What are you trying to do with this port?


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