[amsat-bb] Re: Question about HamTV

Miguel Barreiro miguel.barreiro.paz at gmail.com
Wed May 22 00:09:19 PDT 2013


Apart from the frequency and signal level differences, DVB-T is a 6-8MHz
wide signal with COFDM modulation, using 2k to 8k subcarriers, while DVB-S
is a single carrier, 6..36MHz wide signal, usually QPSK or 8PSK. You cannot
use a downconverter and a DVB-T receiver to tune into a DVB-S channel.

However, the digital bitstream carried by both is the same - so if you have
software analyzers and audio/video players for DVB-T they will work for
DVB-S too.


2013/5/21 Raydel Abreu Espinet <cm2esp at frcuba.co.cu>

> Hello,
> About the future HamTV experiment, is it possible to use a cheap RTL DVB-T
> dongles used or RTLSDR to receive such signals with proper LNA and
> downconverter. If the downconversion fits the signal on a proper channel
> does it device is capable of decode the transmitted format???
> Thanks,
> Raydel
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