(click thumbnail)Fig. 1: A home-brew broadcast transmitter in Ecuador. “Home-brew” devices seem to catch an engineer’s eye. I don’t know if it’s the ingenuity aspect, the construction time involved or ...

The field of radio control has benefited much from the onward march of technology. Where a basic 2-channel setup would once have cost hundreds of dollars, it’s now possible to get a high-end 2.4GHz ...

Factory-made radio transmitters in the 1920s were expensive, so only the largest or best-financed radio stations could afford one. Most of the country’s radio stations just bought the parts and built ...