Emisiones TDT caseras, increible

Acabo de encontrar una pagina en ingles que nos asegura que podemos crear nuestro propio emisor de TDT, con un poco de imaginacion y un linux.

What do you need?

• A good knowledge of X Window and Linux and basic knowledge in electronics.
• A DVB-T set-top box able to receive VHF signals with a bandwidth of 8 MHz (unfortunately most decoders sold in UK only receive UHF signals). You can use French DVB-T receivers which accept VHF and UHF RF signals.
• A PC with a recent VGA card able to display in resolutions up to 4096x2048 with 8 bit per pixel with a pixel clock of exactly 76.5 MHz. ATI Radeon 9200SE are reported to work (their PLL can generate every frequency which is a multiple of 2.25 MHz up to 400 MHz). Other VGA cards may work too. If your card cannot generate a 76.5 MHz pixel clock, I can provide alternate images to do some testing.
• A cable connecting the VGA output to the set-top box RF input. It is possible to use antennas, but since the transmit power is very low, it is better to begin with a cable connection.

  15 pin VGA connector                 9.5mm RF connector
  -------------------                 -----------------------
  1 (red signal)         <----->      RF signal   (central pin)
  6 (red ground)         <----->      GND
  

El articulo completo:

http://fabrice.bellard.free.fr/dvbt/