For Sale - Model 219 - 250hz CW filter for Omni-V, Omni-VI, Orion 1, etc. Specifications - Center Frequency 9.000750 6 dB BW, Hz 250 Shape Factor, 6/60 dB 2.4:1 Insertion Loss, dB 10.0 Ultimate Rejection, dB 85+ Z in & out, Ohms 200 Number of Poles 6 $55 including postage. Contact hjohnc at gmail dot com. 73 de K1ESE John