[Martin] put together a simple portable radio unit to take some ... a battery, and an FM radio transmitter. To give his project a little more pizzazz, he came up with a very handsome laser ...

[Marc] combined these two builds and came up with the cheapest portable radio modem for the Raspberry Pi. Turning the Raspi into a transmitter isn’t really that hard; it only requires a 20cm ...

Following recent communication issues, NASA's Voyager 1 spacecraft resorted to using a backup radio transmitter that has been inactive since 1981. The interstellar explorer experienced a brief ...

From Radio World’s Who’s Buying What page ... However when an old Transradio DMOD3 exciter used to feed the site’s Continental Electronics shortwave transmitter began malfunctioning, RTM decided to ...