If this is a WP-652 with UHF connectors, I would suspect the top SO-239 on the can as well as the elbow and tee connectors. Also you may want to remove the side SO-239 and pull the top connector plate and inspect the soldering on the coupling loop.
On 11/17/07, Keith, KB7M <[EMAIL PROTECTED]> wrote: > > I have a Wacom model WP-652 duplexer with what I hope is a minor easy to > fix problem. Three out of the four cavities are operating correctly with a > classic BpBr curve on the tracking generator. The fourth (it is the high > frequency input cavity normally connected to the transmitter on this band), > exhibits a curve that as near as I can describe it is missing the notch. If > I loosen the connectors and wiggle them, I can sometimes get the correct > curve to show. I have loosened and inspected the tuning stub on the side > and see no visible damage. After reassembly, no change was noted. The > overall performace of the duplexer is not bad, and would probably work with > reduced isolation. > > I'm not sure where to go from here. I don't know how to inspect the > internal matching loops for damage. I also don't know how to disassemble > the cavity for possible repair. > > Has anyone repaired a Wacom duplexer? Is there anyone supporting them? > Any ideas? > > -- > Keith McQueen > [EMAIL PROTECTED] > 801-224-9460 > >
