I have two Tentec CW filters for sale. They are the model 288 1.8 khz 8 pole filter and the model 285 500hz 6 pole filter. Both are designed for the 6.3 mhz IF in late model Tentec tranceivers. The price is $140 shipped in the lower 48. I prefer to sell them as a pair and preference will be given to anyone purchasing both filters. Thanks. Dennis/N4DD