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Old 05-21-2018, 9:16 PM
kayn1n32008 kayn1n32008 is offline
Join Date: Sep 2008
Location: In the 'patch
Posts: 5,066

Originally Posted by chief21 View Post
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

Pass, or notch only cans do not have capacitors. Band pass/band reject duplexers have capacitors on the loops.

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