CW-onderful Part 1: DIY Assembly and Installation Of 500Hz Rockwell Collins Mechanical Filter (526-8693-010) Into Yaesu FT-818nd (A YF-122C clone!)
First off, go to Thomas Witherspoon K4SWL’s blog on this. I stole the idea directly from him. Well from a reader (Petr OK1RP) of the blog that commented that this was possible, and then Thomas documented it. I have been dipping my toe into CW for a while now. I am a member of the …