For Sale -- Ten Tec Filters: 9MHz- I-F Filters, NAR position bandwith filters for Omni-V, Omni-VI and VI Plus transceivers. Used as roofing filters for Orion 1. 217 -- 500 Hz, 8-pole ladder CW filter 219 -- 250 Hz, 6-pole CW filter $70 each, includes shipping and insurance. 73, Don, K8DJ