Hi
*All* incandescent lamps emit RF ….. They are a resistive device that is heated to well above room temperature. People do use them in simple noise figure meters. The inductance of the filament in a typical bulb restricts the bandwidth a bit. The are designs from at least the 1960’s running around. I suspect the approach is much older and that’s just when I was introduced to the technique (= built one). Bob > On Apr 12, 2017, at 2:18 PM, David <davidwh...@gmail.com> wrote: > > Some incandescent lamps can emit RF. > > http://www.rexophone.com/?p=1081 > http://www.radiomuseum.org/forum/rustika_lightbulb_fm_measurements.html > > On Tue, 11 Apr 2017 18:09:52 +0000, you wrote: > >> Apparently fluorescent tubes continuously emit a lot of other microwave >> signals. I once built a homodyne doppler "speed" radar kit (used a coffee >> can for the antenna). The way you calibrated it was to point it at a >> florescent tube and and adjust the reading to a specific value. >> >> ---------------- >> >>> Seems that some fluorescent tube starters do emit a very brief burst at >>> around 1.4 GHz > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.