"Old Ed" asked -

But I am curious: What program inputs are required to
calculate losses for tuners and baluns? Schematics? ;-)
Coil Q? Wire type and gauge? Loss factors for ferrites?
And how would one KNOW these parameters for real-world
examples, say a Palstar AT-1500DT versus an Ameritron
ATR-30?
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Ed,

I've just spent half an hour thinking about how to answer your
question without having to write books on the various subjects.

What sort of gadgets are a Palstar AT-1500AT and an Ameritron
ATR-30? Who are Palstar and Ameritron anyway?

Manufacturers might know. Have you tried Google?
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Reg.