Jason, I am involved in a project that needs the bit stream from XM but we do not need it decrypted. The acquisition of the unencrypted Channel 1 would be fun to do, but so far I cannot get Gnuradio blocks to properly lock on to the signal. The Costas loop drifts through he QPSK constellation, but won't stay locked on it. That probably means I don't have something right in GRC or there is an overlay modulation that confuses the Costas loop phase locking. Until either my hybrid hardware/GRC setup starts locking onto the XM signal there will be no Channel 1.
Steve Katzberg ----- Original Message ----- From: Jason Matusiak To: GNURadio Mailing List Sent: Thursday, April 07, 2016 5:14 PM Subject: [Discuss-gnuradio] XM on GR I was thinking about XM radio today and how channel 1 on it is sent in the clear (if you don't have a subscription, you can tune to it and hear their adds). I haven't found a lot of information (so I think I know the answer), but has anyone looked into an XM receiver in GR? ------------------------------------------------------------------------------ _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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