Re: [Elecraft] OT: more Woodpecker pix (not birds)
On Sat, 9 Jun 2007 21:30:57 EDT, [EMAIL PROTECTED] wrote: The Soviets used tubes in their electronics back then. because their available industrial resources couldn't make and support solid-state electronics of the type needed. They could have imported all the solid-state devices needed, but they decided it was more important not to become dependent on foreign technology. The reason that I heard was that tube technology was far more EMP-survivable than the solid-state designs of the time. -- 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: more Woodpecker pix (not birds)
In a message dated 6/10/07 9:35:25 PM Eastern Daylight Time, [EMAIL PROTECTED] writes: On Sat, 9 Jun 2007 21:30:57 EDT, [EMAIL PROTECTED] wrote: The Soviets used tubes in their electronics back then. because their available industrial resources couldn't make and support solid-state electronics of the type needed. They could have imported all the solid-state devices needed, but they decided it was more important not to become dependent on foreign technology. The reason that I heard was that tube technology was far more EMP-survivable than the solid-state designs of the time. Hello Phil, As I understood it, solid state *systems* could be made as EMP-survivable as tube stuff, even then. But that meant using protection devices - more stuff that had to be imported. It also meant dependence on foreign techniques. The Soviets had done plenty of reverse-engineering, such as their copy of the B-29 that was such an exact copy of an interred US plane that it included things like replicating the interior paint scheme, which was two-toned because the factory ran out of one color and substituted another, and minor mistakes like a 1/16 hole that served no purpose at all. This actually ties into another thread - the one about the Elecraft source code, and its not being openly available. It seems to me that Elecraft is doing the right thing by not releasing it. For one thing, they've made revisions so readily available that it's no big deal, and with the K3 it will be even easier. More important, though, keeping the code under wraps prevents cloning/copying of the Elecraft design, which would otherwise be pretty easy to do because almost all of the parts are standard catalog items. 73 de Jim, N2EY ** See what's free at http://www.aol.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT: more Woodpecker pix (not birds)
http://pripyat.com/ru/internet_photo/chernobyl_2/1/ I'm just blown away at the scale of this thing (450 feet tall). My last post on this de Doug KR2Q ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT: more Woodpecker pix (not birds)
See Google translation below. Much additional text after clicking each thumbnail' 73, Bill W4ZV http://www.google.com/translate?u=http%3A%2F%2Fpripyat.com%2Fru%2Finternet_photo%2Fchernobyl_2%2F1%2Flangpair=ru%7Cenhl=enie=UTF8 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT: more Woodpecker pix (not birds)
This was supposedly, part of their early warning over-the-horizon ICBM missle tracking, missle attack alert system. You got to admit - this dwarfs the freedom antennas of VOA. Wow, RF antenna-design must be in solid shape in Russia. When I learned Karnaugh Mapping in school - they used to talk about the students in Russia, having to work with 12-variable karnaugh maps. Back in the cold war, they talked about the russian jet fighters - which still had vacuum tube VHF rigs in them. Apparently, they had a better natural anti-jamming ability, that some of our hot U.S. fighters of those days. Fred, N3CSY Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center. http://autos.yahoo.com/green_center/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: more Woodpecker pix (not birds)
In a message dated 6/9/07 5:37:02 PM Eastern Daylight Time, [EMAIL PROTECTED] writes: You got to admit - this dwarfs the freedom antennas of VOA. Well, maybe. But it doesn't dwarf the antennas of NAA (Cutler, ME) or SAQ (Grimeton, Sweden), or many others. What's unique about it is the directivity. Back in the cold war, they talked about the russian jet fighters - which still had vacuum tube VHF rigs in them. Apparently, they had a better natural anti-jamming ability, that some of our hot U.S. fighters of those days. Nope. The Soviets used tubes in their electronics back then. because their available industrial resources couldn't make and support solid-state electronics of the type needed. They could have imported all the solid-state devices needed, but they decided it was more important not to become dependent on foreign technology. We could learn something from that. Even today, tubes have some specialized uses. Every microwave oven has one. And the New Horizons mission to Pluto, which is the fastest manmade object in history, has a couple of Traveling Wave Tubes (TWTs) aboard for the radio. 73 de Jim, N2EY ** See what's free at http://www.aol.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
