I have for sale a Yaesu XF-116C 500hz CW filter which was just pulled from my FT920, so I can assure you it works just fine. I am asking $65 shipped for it. I can take paypal, check, or MO. 73s John AA5JG (ex: W5TD, NE0P) 6M WAS #1275, 6m VUCC #1260 2m VUCC #615, Satellite VUCC #129