I just sold my spare OmniVI and now have a few items for sale. Tentec 218 filter (1800 Hz for the 9.0 or main IF) $65 shipped The other filters are probably committed. Tentec 961 or 962 speaker/powe supply unit. Excellent condition. You choose which one you want! $150 plus actual shipping (CONUS only). 73 Allan K7GT