Hello everyone, I have the following filters for sale from my Omni VI Plus: Ten-Tec: 1.8 kHz #288 for the 6.3 MHz IF 250 Hz #282 for the 6.3 MHz IF 250 Hz #219 for the 9 MHz IF INRAD 400 Hz #750 for the 6.3 MHz IF $65 for each Ten-Tec filter and $80 for the INRAD - shipped. Thanks and 73 de Jim - AD6CW