Come on Bill, try to remember! Taps have an insertion loss. The lower the tap value the higher the insertion loss. Also, the more ports for a given value the higher the insertion loss. Granted for the highest values the insertion doesn't change much and is on the order of a couple of db but the low values are something like 3-4db or more. You can't get something for nothing! Insertion losses will add up just like cable attenuation and must be accounted for.
We used to have a Qbasic program that had all of our tap values, insertion losses and cable attenuation inputted. You would just enter the distance between taps and it would spit out the required values and the level required at the beginning of the line. It was very basic and not foolproof. I'm sure that there are applications available now that are light years ahead.
And Hal, I am going to look into some info on those amps for ya!
Hmmm, for some reason the term "feed forward" comes to mind. Not a filter though.
-Hal
[This message has been edited by hbiss (edited 01-12-2005).]
