Len:

LOL!!!

Yes, you are right, hit the wrong mouse button and attached my response to
the wrong post... just lucky you found it and probably figured out it was
a goof on my end--had not noticed until just now...

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

John

On Sun, 21 Aug 2005 19:49:08 -0700, LenAnderson wrote:

That was mainly Brian Burke's and Mark Morgan's post, John.

I spent a whole summer testing Travelling Wave Amplifier Tubes...
know what you mean...:-)

you men

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!