FC10 and FC20 on FT840

Jim Pruitt WA7DUY All Messages By This Member #818 Can anyone tell me what the difference(s) is/are for the FC10 and FC20?? I have an FT840 and recently bought a FC20 tuner but the FT840 says to use the FC10 tuner.? I am hoping the FC20 will work instead so I need to know what the differences are.? Hopefully they use the same protocol and commands.? Does anyone know if the FC20 will work on the FT840 without any mods? Thank you. Jim Pruitt WA7DUY

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