External Tune Button for Yaesu transceivers like FTdx-101, FTdx-10, FT-991 (a), FT-710 and others

In this video I show how to build an external tune button for a Yaesu FTdx-101 (D and MP). It is used to tune my ACOM 1010 amp. It outputs 20 Watts (adjustable) HF on button press. It can also be used (without any modification) on other Yaesu Transceivers like FT-991(a), FTdx-10, FT-710 and others.