Series of boards for Ultimate 3S and relay switched PPF

David Wilcox K8WPE

I was gifted a complete set of kits for the Ultimate 3S, LP filters, relays, etc., and case that was shipped to my gifter in 2017.  I see there are various series of boards and low pass filter instructions but the boards say nothing about which series they are from. Can someone tell me which set of build instructions I need for this set?

Thank you.

Dave K8WPE

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