CAVITY TC?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Think this bounced first time due to a bad address.  On the subject of
spark-excited cavities, they have been around for a long time and are a
fairly simple source of pulsed microwave  signals.  Not good for much
but demos, due to lousy waveform.  However, toward the end of WW2 the
Germans apparently built and fielded an S-Band (3300 MHz) jammer using
just this arrangement; in this case the lousy spectrum was an
advantage.  Haven't found any data on how well the thing worked.

	Another spark-excited system that the Germans (GEMA?) built and fielded
was a very high power VHF radar using a pulsed transmitter.  The
frequency was about 100 to 150 MHz and the peak power in the megawatts,
which is a pretty good stunt in that band.  Again, no record of how well
it worked, just the German nomenclature for it.  Of course, Hertz's
original transmitters also put out fairly high-powered pulsed RF
signals!

Ed