I have a couple of Kenwood 900 rigs I'm hoping to use more regularly during contests on 927 simplex. My Elmer has a couple of 900 amps I might use at some point. I'm not far from a big retirement community and assisted living/nursing home places. So I am a wee bit sensitive to knocking off medical devices and whatnot. Does anyone make a tight bandpass filter suitable for 927? Ideally I'd like a very tight filter but I haven't seen one yet.