I just opened up my FT817ND, it’s not the CW filter I have it’s the SSB filter.
I also then found the original boxes for the YF-122S and the TXCO-9
The 817 no longer transmits, and was deemed beyond economical repair by Yaesu. It died whilst doing FT8, on an activation a few years ago. So I may as well sell the filter and the TXCO-9 on EBay
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