I worked with sa for years and can help some I think:
we run le's 42 48 also ch2-62
amps are at 34 38 
you can buy high gain amps (28db) 
Imputs Minimum: Amps 10db LE's 20 db
Spacing depends on cable size, taps, splitters, & D.C.'s in line.
haven't seen problems with high imputs as long as you have enough pad. generally le's are forgiving picture wise up to about 51 db
330 equipment: Would be surprised that it will handle ch 55, junk it
Feedermakers don't care about frequency, good to go.
Hope this helps a little until you get more info, like what cable dog is looking for. Good luck!!
    
    Re: Help/Info with Cascade S/A Equipment (The old
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