MRF458 and MRF 454 transistors are still available and you can also use
2SC2879.
73
Peter, DJ7WW
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Jim Thomson
<I wouldn't worry too much about transistors becoming unobtainable
<because equivalents will nearly always be available. Compared to
<tubes, transistors don't have nearly as many physical variations and
<many of the later ones will be drop-in replacements. Not so much with
<tubes without replacing sockets and re-wiring.
<In either case, where there's a will there's a way.
<73, Bill W6WRT
## tell that to my buddy, who lives 5 blocks away from me. He has
a ten-tec hercules SS 500 watt amp. Transistors are un obtainium.
There is no drop in replacement either. There is no way to even re-design
and rebuild the damned thing. Its a door stop, worth nothing. Nobody
has been successful in getting a TEN TEC Hercules to work. They
are all door stops.
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