I have come across some V400X cards. They have the same footprint and card edge as the usual 400 KTUs, but these are solid state with ICs and an LED. Does anyone know of these cards, and are they a universal replacement?
I looked up the patent and apparently it is a redo of the 400 with better HOLD circuitry. Manufactured by V-Band Systems. I guess I just need to know what KSUs these will work in.
-Pete