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The IF filters are wider than 3kHz, hell my Flex 6500 receives from 100kHz to 70MHz in one lump. However what gets passed through to the final audio stages isn't wider than around 3kHz with the exception of the Flex which will do just under 4. None of them will do the 6kHz that ESSB guys do unless operating in AM or FM modes.


And they're a TS480, a FT991, a Flex 6500, a TS590S.