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Old 05-21-2018, 4:22 PM
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chief21 chief21 is offline
Join Date: Mar 2004
Location: Summer - western NC mountains; Winter - central FL gulf coast
Posts: 760

I'm not an EE, but it has always been my understanding that most (all?) Pass/Reject duplexers are passive, mechanical devices with no electronic components. They are usually tuned by adjusting each cavity, in combination with the recommended length of each connecting cable - which must be precise. You can often find on-line instructions for the tuning procedure, or contact the manufacturer for assistance.

- John AC4JK
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