While investigating a problem with a Low-Band (46 MHz) repeater, we determined that the antenna harness on a DB 212-4 was bad. It turned out that two UHF female "T" connectors were bad. The center pin of the "T" was, instead of screwing into the center of the through pin, making contact with the aid of a little metal spring. It had rusted so badly that the spring broke in several pieces when we took it apart. Can you imagine this being used on UHF frequencies? The spring would act either like a choke or a resonant circuit with stray capacitance. Needless to say that we replaced them with the "proper" "T"'s. 73, Tony VE3DWI
--- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com, "Steve & Peg" <[EMAIL PROTECTED]> wrote: > > I recall a problem with a UHF repeater with terrible desense that I had some 30 years ago. The original installer didn't have an N connector for the pigtail and used an N to BNC female adapter and stuck one wire of the RG8 in the center hole and soldered the braid to the outside. Needless to say it didn't work. Replacing that thing (which I still have) corrected the problem and it ended its service life with my repair. > > Steve KB3FPN
