What is it ?
This is not a hoax ! With a PC running Linux and a recent VGA card, you can emit a real digital TV signal in the VHF band to your DVB-T set-top box.
DVB-T emitters are usually very expensive professional devices. Now with a standard PC you can broadcast real DVB-T channels !
Examples to transmit PAL or SECAM analog signals directly to your TV are also presented.