[TowerTalk] Narrow Band Filters

[Jim Brown]

I'm thinking about building some narrow band filters (as opposed to a bandpass filter that 
covers an entire band) for use on Field Day. The object is to minimize crosstalk between CW 
and sideband stations on the same band. Has anyone tried this?  Is it practical to get enough Q 
to pick up enough rejection to make it worth the trouble?  Certainly 80/75 would be the most 
practical, since it is the greatest percentage bandwidth. Is anyone making a commercial 
product?

Jim K9YC