The AM radio transmitter does not use any modulator transformer. The audio output from condenser MIC is preamplified by transistor T3 (BC548). The audio output from T3 is further amplified by ...

The more unique conditions that can reliably travel from a transmitter to a receiver, the more data you can send in a given period of time. Quadrature modulation is widely used in digital ...

A simplified diagram of a solid-state amplifier is shown in Fig. 2. As we saw with the tube transmitter, the modulator section consists of the tubes and the modulation transformer. These parts were ...

There was a time — not long ago — when radio and even wired communications depended solely upon Morse code with OOK (on off keying). Modulating RF signals led to practical commercial ra… ...

Modern Modulation Techniques Jul 1, 2014 9:00 AM, Jeremy Ruck, PE Modern society is definitely more mobile than it was several decades ago. Accompanying the increased mobility is a corresponding ...

The mode of operation of the amplitude-modulated transmitter Class-C output stage is discussed, with particular references to the case where the load impedance varies over the working frequency ...