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Carl R. Stevenson wrote: wrote in message oups.com... [snip] We need people like Carl Anderson pushing the buttons at the ARRL. Who's Carl Anderson??? (I didn't see that name in the e-mail I got from Dave Sumner listing those who had been nominated for ARRL offices ...) 73, Carl - wk3c http://home.ptd.net/~wk3c Brian Kelly/W3RV started a thread about your run for office. He referred to you as "Carl Anderson." I guess anything is possible after downing a 5L box of Almaden. |
wrote in message ups.com... Carl R. Stevenson wrote: wrote in message oups.com... [snip] We need people like Carl Anderson pushing the buttons at the ARRL. Who's Carl Anderson??? (I didn't see that name in the e-mail I got from Dave Sumner listing those who had been nominated for ARRL offices ...) 73, Carl - wk3c http://home.ptd.net/~wk3c Brian Kelly/W3RV started a thread about your run for office. He referred to you as "Carl Anderson." I guess anything is possible after downing a 5L box of Almaden. I did not :-) -- 73, Carl R. Stevenson - wk3c Grid Square FN20fm http://home.ptd.net/~wk3c ------------------------------------------------------ Life Member, ARRL Life Member, QCWA (31424) Member, TAPR Member, AMSAT-NA Member, LVARC (Lehigh Valley ARC) Member, Lehigh County ARES/RACES Fellow, The Radio Club of America Senior Member, IEEE Member, IEEE Standards Association Chair, IEEE 802.22 WG on Wireless Regional Area Networks ------------------------------------------------------ |
From: John Smith on Aug 21, 8:36 pm
Len: LOL!!! Traveling Wave Amplifier Tubes sounds like an interesting subject, one which could really catch a guys interest! Especially after a drink or two and some soft music... more than likely, takes a lifetime to explore fully... grin Ackshully, the industry acronym of TWT (Travelling Wave Tube) is for a very interesting late-era vacuum tube, a very broadband amplifier (at least an octave of bandwidth) having low internal noise and many milliWatts of output, low (around 50 Ohms) In/Out impedance and good from L-Band (1 to 2 GHz) on up to X-Band (8 to 12 GHz). The Quail decoy missle used them in several applications, one as a five-octave mixer (!). The Quail was made by MacDonnell (before the amalgamation with Douglas) and carried on the BUFFs. It could fly out along a predetermined course and act like one to three BUFFs to Soviet radar. Good insurance for SAC. The Electronic Warfare Labs at Ramo-Wooldridge Corporation made the avionics package. I tested those cylindrical tubes in the summer of '58, the same summer I decided on a major switch of majors into electronics engineering. TWTs are still being used in communications satellites as the octave bandwidth final amplifiers, ideal since many, many transponder channels can be amplified together, with very little intermodulation distortion. TWTs are one of the last family types of vacuum tube devices still useful and being used...the others are CRTs (becoming scarcer and scarcer), photo mulitpliers in optical instrumentation, the heart of Night Vision devices, microwave oven magnetrons, and high-power VHF-and-up transmitters. Oh, and, in a few rare cases, vacuum tubes are used by beepers in "state-of-the-art" vacuum tube transmitters they "designed" in the 1990s... BSEG I'm not going to touch the "other" acronym...would upset Kim and Dee too much...not to mention certain pansy posters in here. :-) ace nam |
Carl R. Stevenson wrote: wrote in message ups.com... Carl R. Stevenson wrote: wrote in message oups.com... [snip] We need people like Carl Anderson pushing the buttons at the ARRL. Who's Carl Anderson??? (I didn't see that name in the e-mail I got from Dave Sumner listing those who had been nominated for ARRL offices ...) 73, Carl - wk3c http://home.ptd.net/~wk3c Brian Kelly/W3RV started a thread about your run for office. He referred to you as "Carl Anderson." I guess anything is possible after downing a 5L box of Almaden. I did not :-) Nice! |
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