Try this
http://www.noisecom.com/
"RST Engineering (jw)" wrote in message
.. .
Immediately you say "choke" you have modified and peaked the bandwidth.
I'll buy that you can feed it with a resistor for broadband, but in my
humble opinion the construction of a grain of wheat bulb won't get up into
the UHF region with noise. Do you have any idea of the output level of
this circuit?
Jim
"Mark" wrote in message
oups.com...
I have seen a small "gain of wheat" type light bulb used as a noise
source...
Feed it with DC through a choke and AC couple the noise out ....
and you can vary it too!!
Mark