Whatever happened to the X-2159?
http://www.cpii.com/docs/datasheets/81/8974.pdf
73 de Mike W9OJ
On 8/2/2013 3:09 PM, John Lyles wrote:
I just concluded 3 days of observing the final testing of a new tetrode in the French
Thales (former Thomson) factory. I can say with first hand experience that tubes will be
around for a long time, at least at the power levels that make sense for them. I'm not
talking about broadcast or even communication levels, but for industrial and scientific
sources. This posting may not be directly applicable to amateur amplifiers, but to
amplifier technology in general. On Monday the TH628 ran 600 kW key down. That's with
plate power of 12.2 kV Ep at 85 amps! This was up at 200 MHz. In an amplifier smaller
than the car I drive. I'd love to know of any other technology capable of this at
comparable size, cost and efficiency. The perfection of the art and skill of making
thermionic devices is evident here. "Awesome" is all I can think..
On Tuesday, the same amp ran up to 3 MW pulsed with 26 kV at 175 amps plate
current very linearly, 66% efficient and> 14 db gain in grounded grid(s)
configuration.
It gets shipped to us in USA for further testing in our PA in the southwest. There
will be 2 more like this in coming months to test and install. I'm happy to be back
home but have to say that time in a big tube factory dispels any notions that I
continuously hear on this forum and other places (broadcasters or scientists) that
tubes are gone, going,& dead end now. I challenge the same pundits to come up
with a superior way to generate RF power. Maybe in the sun?
Sorry that this isn't directly applicable to our ham discussions here but as amplifier
builders it is more than of "academic interest", being real hardware.
73 K5PRO
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