This double-sideband (DSB) radiotelephone transmitter is powered entirely by the instantaneous (not stored) energy produced in the operator’s voice. The RF output power in my prototype falls within the range of 5 to 15mW. The circuit is essentially a high-level DSB modulator/crystal-controlled RF oscillator. DX QSO made by author: 10/13/09 W1VZR 57/459 Limerick, ME …
The “MAKE” magazine was published an interesting article (IMHO). Read below. Photo: “MAKE” My favorite ham activity is making contacts via satellites. Not only is there the romantic notion of sending messages into outer space, but you have to trace the orbit of the satellite with your antenna while tuning the radio, to compensate for…
As we all know the real Santa Claus comes from Finland! Santa ClausLand (OH9SCL) will be again active during this December from the Articcircle. Activity will be on 10-80 meters on CW,SSB and digital modes. Among others Santa’s helpers will include: Many operators. QSL viaOH9UV. Source
More details
video from Henk, PA3GUO showing Amateur Radio’s involvement in the experiment. TKS to PA3GUO