At 10/7/2009 16:39, you wrote: >At 07:36 PM 10/6/2009, n...@no6b.com wrote: > > >Are you sure you didn't miss a 3rd trimmer? Every tunable isolator I have > >has 3 adjustments per stage, one for each port. If not, it's possible the > >interstage tuning (1st stage output & 2nd stage input) are fixed-tuned, > >which explains the narrow tunability. > ><--Actually there are 4 trimmers (as my original post eluded to). >Being a 2 stage isolator (4 ports total), there are two "pass" ones >and 2 "reject" ones.
There should have been 4 "pass" trimmers total. As I stated in my previous post, my guess is that the interstage tuning is fixed, which would explain the low bandwidth. Bob NO6B
