For Sale: Inrad #720 2.0k SSB Filter for Yaesu FT-817 FT-857 FT-897 radios. This filter works MUCH better than the 2.3k SSB filter offered by Yaesu. Reviews here: http://www.eham.net/reviews/detail/577 "I spent 6 months researching and found the reports on the Yaesu 2300 filter, most said no difference between the stock. A reports on the INRAD #720 are BANG ON. I live in an apartment in Toronto, constant 9+ db of noise and this helps cut out some of the junk allowing me to work weaker stations. " I purchased this filter direct from Inrad, and have used it for less than a year. Price $100 (free shipping).