Re: I want to document some RF techniques, help please

Robin Szemeti - G1YFG

And a couple of good YouTube videos on the subject:

The problem may be that you are trying to achieve a narrower spacing than the notch is set up for, if you are trying to achieve a 1.6 MHz spacing from a setup deigned for a 5MHz spacing there may not be enough range on the trimmers to move the notch where you want it to be.   You will struggle to achieve 1.6MHz spacing on 2 cavities a side .. 3 is the minimum and 4 is better.

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