YAESU RELAY INTERFACE
PTT relay interface for driving linear amplifiers with PTT and ALC output with RCA connector
It avoids the now well-known failures of the radio's PTT port when driving amplifiers with high current draw switching relays. It also has a transparent ACC output to use other devices that require this port.
(Attention, it must be connected to the TUNER port)
Suitable for Yaesu FT991, FT991A, FT897, FT857, FT710 and FTDX10 transceivers