Re: [Discuss-gnuradio] NanoSail-D turns out isn't lost!
Hi, On 22/01/11 18:32, Patrik Tast wrote: Sumthing is fundamentally wrong how I/we do it. I guess it could be LHCP? Perhaps someone (who speak English) could query NASA on howtos? I believe NanoSail-D's battery is now completely drained, and is now silent. -Phil ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] BasicRX boards and AM transmission
Martin Braun wrote: RXing with the USRP simply doesn't work, though, neither with usrp_rx_nogui.py nor with anything I could come up with. I get lots more noise than expected and usually I get a very loud buzz or whistle which is a lot louder than the TXed signal. Has anyone else had this problem? Hi Martin, Just a quick "me too!". I don't have a USRP yet but I did try using GNU Radio to receive AM radio signals with a BT878 chip. With a slightly modified am_rcv.py I could hear the station, but it was very weak and drowned out by lots of noise. The capture was fine as I was able to get good audio (as good as AM can be anyway) with the Dream DRM receiver in analogue mode, using GNU Radio to shift the target carrier down to 12kHz. -Phil ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] audio source/sink buffer
Hi all, I've put together a simple program that shifts the frequency of an input down so that 252kHz comes out at 12kHz. It seems to be working, but it's very prone to buffer underruns and overruns. The slightest bit of activity on the computer breaks up the output. Is there any way to buffer the data from the audio sink, insulate things a bit? The input is from a BT878 chip @ 896000sps, the output is to a sound card @ 56000sps (actually 48000sps, using plughw). The goal is to feed RTE's DRM signal on 252kHz to another computer running the DRM decoder Dream [1]. The buffer problems are causing Dream to drop the signal almost as soon as it locks on. -Phil [1] http://drm.sourceforge.net/ ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
