Re: [Discuss-gnuradio] help: optimizing a fm broadcast flowchart. Getting multiple stations in a rtlsdr (Derek Kozel) (Michael Dickens)

2018-12-09 Thread Cinaed Simson
sers] Segmentation fault commands to USRP with >>       gnuradio (Christoph Mayer) >>    6. Re: [USRP-users] Segmentation fault commands to USRP with >>       gnuradio (M?ller) >>    7. Receiving NOAA signals and passing to BB (Guilherme Theis) >> &g

Re: [Discuss-gnuradio] help: optimizing a fm broadcast flowchart. Getting multiple stations in a rtlsdr (Derek Kozel) (Michael Dickens)

2018-12-09 Thread Cinaed Simson
Theis) > > > ------ > > Message: 1 > Date: Thu, 6 Dec 2018 13:17:01 -0400 > From: Luis Roca mailto:lrocaigu...@gmail.com>> > To: discuss-gnuradio@gnu.org <mailto:discuss-gnuradio@

Re: [Discuss-gnuradio] help: optimizing a fm broadcast flowchart. Getting multiple stations in a rtlsdr (Derek Kozel)

2018-12-07 Thread Cinaed Simson
I'm with Michael and Derek. However, since I did receive the image - and in general I avoid images like the plague - I did look at the image against my better judgement, and I have a couple of comments. You have 2 identical parallel branches - completely disable everything in the lower upper bran

Re: [Discuss-gnuradio] help: optimizing a fm broadcast flowchart. Getting multiple stations in a rtlsdr (Derek Kozel) (Michael Dickens)

2018-12-07 Thread Luis Roca
---- > > Message: 1 > Date: Thu, 6 Dec 2018 13:17:01 -0400 > From: Luis Roca > To: discuss-gnuradio@gnu.org > Subject: Re: [Discuss-gnuradio] help: optimizing a fm broadcast > flowchart. Getting multiple stations in a rtlsdr (Derek Kozel) > Message-ID:

Re: [Discuss-gnuradio] help: optimizing a fm broadcast flowchart. Getting multiple stations in a rtlsdr (Derek Kozel)

2018-12-06 Thread Michael Dickens
Unless your host computer's CPU is way underpowered, I'm with Derek here: use polyphase filterbanks to channelize into 200 kHz bandwidth per channel, then have a bank of FM demodulators, one per channel. Output to files, or display, or whatever you need. - MLD On Thu, Dec 6, 2018, at 12:17 PM, Luis

Re: [Discuss-gnuradio] help: optimizing a fm broadcast flowchart. Getting multiple stations in a rtlsdr

2018-12-06 Thread Derek Kozel
Hi Luis, At least on my end I can't see an attachment. Since FM broadcast stations are regularly spaced the polyphase filterbank is a good choice for separating out each of the individual channels. You can then use the same demodulation set of blocks and file sink that you're (presumably) usi

[Discuss-gnuradio] help: optimizing a fm broadcast flowchart. Getting multiple stations in a rtlsdr

2018-12-05 Thread Luis Roca
Thanks for this great software. We are tinkering with a setup for listening to radio and storing the streams as wavs. We have two challenges that we haven't been able to tackle satisfactorily. Any help would be appreciated. 1. What do we need in order to tune into as many stations as an rtlsdr c