Most duplexers are passive, mechanical devices. You did say the cavities had been visually inspected and cleaned so we can assume the "cans" themselves are fine. In my opinion the single component on a duplexer that's most likely to fail would be the cable harness and its associated connectors/adaptors. Is this a vhf repeater? What is the power output?
Dan K8PLW Livonia, MI --- In Repeater-Builder@yahoogroups.com, "Richard" <rra...@...> wrote: > > Sorry if I've been late in posting. First, the antenna and hard line is ok. > We've tested that part out and its working. We think ( I ) that we got zapped > through a unused phone line which is mounted behind the repeater rack. > Yes, we have tested the can's using both a IRL (?sp) and a General Dynamics > service monitor. They were taken apart and cleaned and retuned. Everything > indicated they were functioning normally. Till we put them back in service. I > don't know if they were tested with a dummy load. The technicians made many > trips to the site: the technicians worked for the company that we rent the > site from. We replaced all of the connectors and only found one that had > scorched indications on it, but that was all. > I asked if any of you knew how to find out if a can was operational, because > all the test equipment that was used indicated they were ok. We finally > found a workable solution. We added a fifth can, tuned to the transmit freq. > That stoped the crackling noise. > Now we're going to replace the can's, and go with a 6 can configuration. this > is what was reconmended by the technician. > > Rich K8JX > > www.w8usa.org >
