For entertainment broadcasting applications WBFM is used, whereas NBFM is used in communication like police wireless, ambulance etc. (Figure 24). Figure 23. GRC flow graph of FM modulator and demodulator. Figure 24. Waveform of FM modulation. 4.2 Digital modulation techniques 4.2.1 ASK modulation...
I could go on because, you know, readers love talking about books we’d like to read, but I also know when it’s time to stop and pass the baton on … POSTSCRIPT: The day I posted thisThe Guardian Australia, as kimbofo shared in the comments, published their Top 25, which more o...
such as direct TV broadcasting and distribution of governmental and commercial content, Es'hail 2 offers a linear transponder for amateur radio services. This encompasses low-power narrow bandwidth voice, Morse, and digital communications.
First, we will need to find some TETRA signals. The easiest way to do this is to open SDR# or another program like GQRX and look for them. TETRA signals are continuously broadcasting with a bandwidth of around 25 kHz. In most European countries they can be found at 390 - 470 MHz. In...