Hello I will try to work the old Yaesu PA FLDX 2000 with my K2 / KPA-100, and connect the TX line from FLDX 2000 to PA key on KPA-100. When i switch to STBY on FLDX 2000 the receiver i my K2 is muting nearly 100 %. Is there a easy solution to this problem ? The FLDX 2000 work ok when i use my old TS -430. LA2FCA - Oddvar