Can you tell us more about the model of your duplexer? When you say notch is it:
A. Flat pack mobile style notch only duplexer with a 3MHz minimum split. B. Wacom BpBr cavites such as WP-639. C. Motorola style notch only small cans. Also if you have a VHF circulator you can replace the tee between the 2 sides of the duplexer and antenna for an additional 20dB of isolation. On Mon, Aug 10, 2009 at 9:07 AM, tahrens301<[email protected]> wrote: > Was just curious as to if folks have > gotten Notch cavities to work ok with a 600khz > split. Have 4 in Rx leg & 4 in TX leg. According > to the analyzer, each bank has a >90dB notch. > Double shielded cable throughout (RG-9). > > Just about pulled all my hair out over the last > couple of weeks, and still have desense issues. > Even tried another repeater, just to see if it > was still there, & yep it is. (was actually a > bit worse than the Quantar, but it uses cheesy > cables for RX (TKR-720)). > > Did find something interesting inside the Quantar > tho, the RX cable that screws into the RX filter > housing had a problem. They use a crimped Mini-UHF, > and the section that got crimped actually rotated > freely around the piece that has the center conductor > in it. Nice rotatable cable, but don't think that > it was intended to do that! Soldered the two together. > > Thanks, > > Tim W5FN > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
