... would you do me the curteousy of finding out what the price for a newly made 2017 tube is, and the minimum order quantity?
Svetlana prices are really high and I see no why a ham would like to give an arm and a leg for a factory new tube, since there are plenty of reasonably priced NOS tubes that are no worse at all.
What really matters for us is that the production continues and the currently produced tubes will be available as NOS after 5-10 years.
Anyway, having a spare tube on hand is a must for every tube amplifier owner. No matter of the amplifier brand model.
I agree, continued production is the single most important factor.
I was of the belief that this was not the case, as I have never seen a new or even recent GU-74B offered for sale. The most recent example I can find is the Svetlana US "4CX800A", stocks of which are now depleted.
Out of interest why did Acom discontinue Acom 1011 the 2x 4CX250B amplifier? I thought that was a really neat product, given the continued US production of 4CX250Bs, the Chinese production of FU-251Fs, and the huge stock of surplus tubes.
The shelf life of 4CX250Bs is fantastic so long as they are stored well.