I have for sale the YF-122S 2.3khz SSB filter for the Yaesu FT817, FT857, and FT897 series of radios. Narrows down the passband on SSB limiting QRM, and you can also set up your transmit to go through this filter, adding some punch to your audio. I am asking $90 shipped for it in the US and can take paypal/check/MO.
73s John AA5JG