Foundations Of Amateur Radio

Foundations of Amateur Radio When you key your transceiver, as-in, you trigger the Push To Talk or PTT button, you close a switch that activates the transmitter and in turn allows your voice to make it through the microphone and radio, via the coax out to the antenna and the world. When you release the button, the transmission stops. This is pretty much how we're taught that a radio transceiver works, essentially switching between transmit and receive, depending on the state of that magic switch. If you want to create a transmitter in software using GNU Radio, you might get to a point where you start looking for a conditional block, a magic piece of code that you can add to the system that checks the state of the PTT button and sets the state of your contraption accordingly. In programming terms, you might start looking for an IF .. THEN .. ELSE block, as in, IF PTT THEN transmit ELSE receive. Let me save you the trouble of looking for such a thing, because it doesn't exist. With that revelation you are