Here are some DIY FM Transmitter circuits that we have been published on ... This FM transmitter circuit uses four radio frequency stages: a VHF oscillator built around transistor BF494 (T1), a ...

The transmitter emits a beam of infrared light which is invisible to the human eye ... Cable tv amplifier This cable tv amplifier circuit is a rf-amplifier designed to be quickly installed between two ...

When we think of a spark gap radio transmitter ... energizes the tuned circuit, with each pulse causing a damped oscillation at its resonant frequency. The resulting RF signal is a crude AM ...

This remarkable development of RF circuits is chronicled in the first ... the attributes and limitations of various receiver and transmitter architectures. The material assumes a thorough ...

We say don’t try this at home because the output of a transmitter like this will likely spew RF all over the place ... more details about how the tank circuits work in those videos.