Being a proponent of the KISS philosophy, IMHO, it would seem appropriate to
decide how much output one wants, how much drive power is available, and
then pick the tube(s) that will satisfy the requirement. A 4-1000A requires
too much drive unless you're running really high voltage whereas a 3-1000Z
will do the job with less components and only needs ±3500VDC to drive it up
the and beyond the legal limit using only 100W of drive. If the RF deck is
built with heavy duty components, one could always do a tube swap to bigger
and better with few changes. A deck that would accommodate a 3CX3000A7 down
the road comes to mind.
Remember, too much power is just enough!
Bob W6TR
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