It is applicable to the Yaesu series shortwave radio stations, such as the models with 8-core crystal head microphone interfaces like FT-710/891/991/991A, FT-450, FT-817/818/857/897, DX10, etc. Compatible With: Yaesu FT-450 FT-710 FT-817 FT-818 FT-857 FT-891 FT-897 FT-900 FT-991 FT-DX10.
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