Until it started to misbehave recently, I have used the Elecraft T1 auto ATU with my 12yr old FT817 with good results. Its main use has been to resonate end-fed wire antennas on HF bands. I always struggled on 160 and 6m.
Does anyone know how the LDG Z817 auto-ATU compares? It is larger than the T1 but less expensive.
What would YOU recommend? I intend to get a new FT1817ND (as a second radio) and auto-ATU, then to fix the old ATU.