19 de abril de 2007
Emisiones TDT caseras, increible
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: