The numbers on the filters are the channels or frequencies that are passed or blocked. You will have to ask the cable company if they are using positive, negative or both in their systems.
You can go here to see a list of the channels and frequencies, http://www.jneuhaus.com/fccindex/cablech.html
I think if you see the freq. on the trap it is going to block out those freq.'s
Re: Cable Filter Codes
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