[Yaesu] CW Filters for 990

[Walt Soderman]

I understand Yaesu stopped manufacturing the 990 a year or so ago. 
Anyone know where I can still locate the 250Hz and 500Hz filters for the
990?  I assumed that they, too, were out of production when I recently
called HRO and they said there were none in stock at any of their stores.

Thanks,
Walt  KE4QOH

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