The tube equipment for the most part is immune to EMP so Nuke bombs don't wipe out the avionics.
Next question.
My HF amp runs a matched pair of 3-500Z triodes, 2KW.
p
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dwight Mattix
Sent: Wednesday, January 18, 2012 3:40 PM
To: [log in to unmask]
Subject: Re: [TN] What is the future of electronics assembly?
My 4th and 5th Lumbar discs have a special relationship with a particular airborne radar B-band Coaxitron assembly that had mason jar sized tetrode and triode piggybacked inside and was full of FC-77 coolant.
At 02:55 PM 1/18/2012, Inge wrote:
>Remember HP's frequency counter, big as a washing machine, inside full
>of electron tubes, outside panel filled with Nixie tubes..
>How many out there know what Wademecum was? I regreat I didn't save a
>set.of them. Sylvania, RCA, Mullard, Valvo, Telefunken, Osram, Philips,
>Siemens, name them all..
>
>I'll tell you a true story. Raytheon people, if any, may remember. We
>had left electron tubes far behind. A modern nose radar used ICs,
>transistors, triacs and all other modern stuff. A MIG hit the ground
>somewhere and the US air force got it from a allied for analysis of the
>technical level, especially the nose radar. We were invited too. The
>radar was BIG, technical expertize marvelled. The equipment was taken
>out and was dismantled. All of them just stared and stared again. They
>hoped to see the newest of Sovjet's technology, but this nose radar was
>full of electron tubes.
>Mini tubes. Hundreds! Not a single micro circuit. Guess why...
>Inge
>
>
>----- Original Message ----- From: "Stadem, Richard D."
><[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Wednesday, January 18, 2012 7:42 PM
>Subject: Re: [TN] What is the future of electronics assembly?
>
>
>>Yes, I remember while working at Stark Electronics in the 70's that
>>when the transistors and ICs were starting to become more popular, all
>>of a sudden the old electron tubes became smaller, better quality and
>>much cheaper. Part numbers like Sylvania 6AU6, 6AY11, 12DF7, etc.
>>start coming back to me, and I remember which ones were power supply,
>>filter, and amplifier tubes.
>>And my old tube amps always did have a much better tonal quality to
>>them than any transistor amp ever did.
>>Even up until just recently, the very best hi-end audio amplifiers
>>such as Bel Canto still used tubes, albeit cutting edge, not
>>yesterday's technology.
>>I had a chance to listen to Maria Callas singing through a Bel Canto
>>system recently, while there on business. My wife and her sister were
>>with me. They both started crying, the music was so beautiful. Both of
>>them were trained singers, and they know a good sound system when they
>>hear it.
>>
>>So, yes, there will always be a market for today's electronics, just
>>as there is still a market for yesterday's, because some things simply
>>cannot be easily improved.
>>
>>
>>-----Original Message-----
>>From: TechNet [mailto:[log in to unmask]] On Behalf Of Ahne Oosterhof
>>Sent: Wednesday, January 18, 2012 11:54 AM
>>To: [log in to unmask]
>>Subject: Re: [TN] What is the future of electronics assembly?
>>
>>Yes, at some point in time the present day technologies will be
>>replaced by new ones. But the new ones have not really shown
>>themselves clearly yet.
>>When looking at past changes I have noticed that old technologies kind
>>of go through a revival stage when the new ones show up. As an
>>example, CRTs improved noticeably when flat panel displays started to
>>pop up, but are now essentially gone. Vacuum tubes became smaller, as
>>in nuvistors, but transistors won.
>>Can we expect some noticeable improvements in today's assembly and
>>packaging processes before they will also be delegated to the dustbins of time?
>>
>>
>>Ahne.
>>
>>
>>-----Original Message-----
>>From: TechNet [mailto:[log in to unmask]] On Behalf Of Pete
>>Sent: 18 January, 2012 7:11 AM
>>To: [log in to unmask]
>>Subject: Re: [TN] What is the future of electronics assembly?
>>
>>Interesting discussion indeed. I see a lot of predictions about the
>>need for legacy work, which will keep people employed. But it's the
>>leading edge, new technologies that will make up the bulk of the bulk
>>of the work, and profit.
>>
>>As a PCB designer, I have to approach this from a different
>>perspective. I know how to design for the current technology, but once
>>it's designed, there's not much legacy work I can count on. How do I
>>design for Occam? Or the next idea? Nano technology and graphene
>>could completely change the component/solder/copper/laminate
>>structure. PCB design could become more like IC design. I don't want
>>to be the guy justy hanging on to old tech, I want to be learning and
>>implementing the latest and greatest.
>>
>>If I'm not one of the ones ready to understand and design the new
>>technology, I'll be one of the youngest Wal-Mart greeters in the store.
>>
>>Pete
>>
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