Re: Antenna Probe ( was Oscilliscope Question )

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

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi Matthew,

The "design" is really pulled out of thin air.  Not at all critical.  I 
just tried to eliminate the current loops a solid plain would have and cut 
down on antenna to ground capacitance.  100MHz is far higher than any 
normal TC measurement would ever need.  Feel free to whip up anything "just 
close" to that design ;-))  I did try to pickup a specific number of square 
inches, but that is all relative and not a big deal at all.

Really, anything remotely close, would work just fine.  Calibration is an 
issue but 95% of the time we are just after "true" but uncalibrated 
waveforms.  It does eliminate the impedance match problems and harmonics 
ringing of just a "piece of wire".  The readings should be accurate to 
"some scale" and free of birdies...

Cheers,

         Terry

At 02:51 PM 1/5/2003 +1030, you wrote:
>Hi Terry / All
>
>>The plain wave antenna can be made far more cheaply than I did it.  It is 
>>very useful and I still us it all the time despite may getting all kinds 
>>of fancy probes since
>
>That's neat!  Not having the means to measure handy, is the JPEG of the 
>antenna to scale (it looks it when opened on it's own)?  It'd be a matter 
>of a mere half hour to get that printed and etched if it is.
>
>Cheers
>
>M
>
>--
>Matthew Smith            | Business: http://www.kbc-dot-net.au
>IT Consultant            | PGP Key:  http://gpg.mss.cx
>Kadina, South Australia  | * Tivis Project * Community Connect *
>
>