Those look like the DB products duplexer that uses helicals.
On 1/9/08, Scott Zimmerman <[EMAIL PROTECTED]> wrote: > > Anyone seen a set of these before? Any documentation available? Can they > be used on 6M? > > I have never seen this type of duplexer They are marked with 37.98 as a > frequency. The open port on the tees kinda makes me wonder. > > These are not mine. I can't lay hands on them personally. I am posting > this for a friend, and out of general curiosity. > > Scott > . > Scott Zimmerman > Amateur Radio Call N3XCC > 612 Barnett Rd > Boswell, PA 15531 > > >

