Danny, I believe my Omni C has that filter. If so, I'll trade with you. Let me check my Omni and get back to you. I gave a friend my 500 HZ filter a couple of years ago and now that I picked up a Paragon, I probably should have held on to it. Oh well, such is life. I'm N4UB, Don.widener at eudoramail.com. Talk to you later. 73