On Sat, 2009-06-06 at 21:57 -0700, Eric Blossom wrote: > On Sat, Jun 06, 2009 at 02:30:05AM -0400, davek wrote: > > I would like to get my usrp conneced to my TVRO satellite dish. I am > > wondering... > > Is the DBSRX daughter card suitable for direct connection to a satellite > > LNB? > > Yes. > > > I am thinking it will be easier to let the sat receiver do the lnb > > power and polarization control > > Is it be safe to connect to the lnb loop-through connection on > > standard satellite receivers? > > I don't know. > I have done that in the past and it worked fine. (I did analog satelite TV reception which is FM modulated. I just switched the AM-demod block in usrp_tv_receive.py for a quadrature-demod block (=FM demodulator) and reduced decimation and got an image. You get some distortion because you can't get the complete bandwidth of a sattelite channel usring a USRP-1. (Best I got was 16 MHz using 8 bits/sample and decimation 4 )
Using the sat-receiver for power and polarisation is very conveniant. You can use the remote to switch polarisation. Greetings, Martin > Eric > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
