The FM modulator circuit (frequency modulation) is built with a Motorola MC1648P oscillator. Two varactors, Motorola MV-209 are used to frequency modulate the oscillator. The 5000 Ω potentiometer is ...

Compared to the simple diode needed to demodulate AM radio signals, the detector circuits used for FM are slightly more complicated. Wrapping your head around phase detectors, ratio detectors ...

A 7.5A fuse should be about right for an FM modulator, a Bluetooth dongle, and a Bosch relay coil. I rigged the fuse to the power circuit for these three devices.

FM is a popular modulation scheme used to transmit information on a high-frequency radio carrier by varying the carrier frequency. It’s still widely used today in both analog and digital formats.

As the weapon of choice for countless dubstep, DnB and bass producers over the last decade, NI’s Massive is considered the most iconic software synth of all time, packaging once-complex digital ...