[TenTec] 4CX1600B

[Dr. Gerald N. Johnson, electrical engineer]

Last I looked RF parts sold 4CX1600B, has that changed? And other
venders of Russian tubes tend to have them. Look for Svetlana or
4CX1500B.

Google turned up:
http://www.hfpower.com/_disc2/00000075.htm
http://www.rfparts.com/tubesvet.html
http://www.dxham.com/tubes.html
http://www.surplussales.com/Tubes-Sock-Acc/TubesListed.html
http://www.vacuumtubes.net/page/price1.html
http://members.surfsouth.com/~wharrell/fest/tomstube.htm
http://www.pentalaboratories.com/audiophile.asp?dept_id=1331

Have you asked Tentec? They treat us very fine on other parts, its
hardly conceivable that they should be stingy about selling replacement
tubes for their own products.

The tube has adequate ratings for normal 1.5 KW output that it should
not be worn out by any use including continuous commercial service. So
if the amplifier meets specs for efficiency now it shouldn't need a
tube.

73, Jerry, K0CQ
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Entire content copyright Dr. Gerald N. Johnson. Reproduction by
permission only.