I'd go with the Ten-Tec 600hz filter. 73, Barry N1EU On Wed, Nov 18, 2009 at 11:40 AM, Steve Miller <hsmiller at awsllc.net> wrote: > Hopefully I'll get it right this time!!! > > Which are the recommended cw filters for the Orion II....the ones from TT or Inrad? I'm looking at the 500 or 600Hz cw Filters. Thanks, Steve N0SM >