Sounds like an opportunity for someone to design and make filter boards for other specific uses.  I'd like a narrow one for 136kHz for example.

Neil G4DBN

#notvolunteering

Hi, Clint
Isn't it a little disappointing that the available filters are designed for the amateur bands only?
I wouldn't have the skills to build on the unpopulated boards.

-- 
Neil
http://g4dbn.uk