The Tektronix RSA306 9 kHz - 6.2 GHz RF signal analyzer samples the IF at 112 MS/s (14 bit A/D), so it streams data over USB 3 at 224 MB/sec. A PC with an I7 (or even a good I5) and a modern solid state hard drive can keep up with this streaming data and store hundreds of GB of contiguous streaming samples. These can be read back with the SignalVu- PC application (base version is free, but option is required for playback) and analyzed as I/Q data (contiguous spectrograms over up to 1 second, export to Matlab, etc.). Unfortunately, I'm in Texas so I can't receive these transmissions from Europe. ;) -- Bill Byrom N5BB On Sat, Dec 19, 2015, at 05:10 PM, Lizeth Norman wrote: > That's what I said. 61.44MS/s. This thing is a fire hose. > Saturate a usb 3.1 without much problem. > Gotta love computing! > > On Sat, Dec 19, 2015 at 5:01 PM, Poul-Henning Kamp <phk@phk.freebsd.dk> > wrote: >> -------- >> In message <5675AC3C.8020204@aei.ca>, Graham writes: >> >>> Would you be able to record what you want via the online web SDR at the >>> Twente University? >> >> Not really.  That would only give a water-fall. >> >> What I think should be preserved is the actual raw, unadultered signal on air. >> >> >> -- >> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20 >> phk@FreeBSD.ORG         | TCP/IP since RFC 956 >> FreeBSD committer       | BSD since 4.3-tahoe >> Never attribute to malice what can adequately be explained by incompetence. >> _________________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > _________________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

Had I known a trip to EU would have been in order. Going for a ham radio vacation anyway. 8R satellite. The radio (B210) runs with either of the I7 laptops that are here. As you point out, making sure that the bus speed and devices are compatible is key. The B210 is a "development board" so to speak for the AD 9361. Fun stuff. Always wondered what the vector calculus would be useful for. On Sat, Dec 19, 2015 at 11:05 PM, Bill Byrom <time@radio.sent.com> wrote: > The Tektronix RSA306 9 kHz - 6.2 GHz RF signal analyzer samples the IF > at 112 MS/s (14 bit A/D), so it streams data over USB 3 at 224 MB/sec. A > PC with an I7 (or even a good I5) and a modern solid state hard drive > can keep up with this streaming data and store hundreds of GB of > contiguous streaming samples. These can be read back with the SignalVu- > PC application (base version is free, but option is required for > playback) and analyzed as I/Q data (contiguous spectrograms over up to 1 > second, export to Matlab, etc.). > > Unfortunately, I'm in Texas so I can't receive these transmissions from > Europe. ;) > -- > Bill Byrom N5BB > > On Sat, Dec 19, 2015, at 05:10 PM, Lizeth Norman wrote: >> That's what I said. 61.44MS/s. This thing is a fire hose. >> Saturate a usb 3.1 without much problem. >> Gotta love computing! >> >> On Sat, Dec 19, 2015 at 5:01 PM, Poul-Henning Kamp <phk@phk.freebsd.dk> >> wrote: >>> -------- >>> In message <5675AC3C.8020204@aei.ca>, Graham writes: >>> >>>> Would you be able to record what you want via the online web SDR at the >>>> Twente University? >>> >>> Not really. That would only give a water-fall. >>> >>> What I think should be preserved is the actual raw, unadultered signal on air. >>> >>> >>> -- >>> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 >>> phk@FreeBSD.ORG | TCP/IP since RFC 956 >>> FreeBSD committer | BSD since 4.3-tahoe >>> Never attribute to malice what can adequately be explained by incompetence. >>> _________________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> _________________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

On Sat, Dec 19, 2015 at 10:01:44PM +0000, Poul-Henning Kamp wrote: > -------- > In message <5675AC3C.8020204@aei.ca>, Graham writes: > > >Would you be able to record what you want via the online web SDR at the > >Twente University? > > Not really. That would only give a water-fall. > > What I think should be preserved is the actual raw, unadultered signal on air. I'm the developer of that WebSDR, and I was already planning to use it to make some raw signal recordings on New Year's eve. This is not just to capture the LORAN shutdown, but also the shutdown of a bunch of medium-wave broadcast stations (from France, Germany and Luxemburg). My current plan is to record the 0 - 1800 kHz spectrum (output of the ADC, but low-pass filtered and downsampled) for at least a couple of minutes (but possibly more) around "interesting" times such as midnight local time and midnight UTC. Regards, Pieter-Tjerk (PA3FWM)

-------- In message <20151220235152.GC23815@cs.utwente.nl>, Pieter-Tjerk de Boer writes: >I'm the developer of that WebSDR, and I was already planning to use it to >make some raw signal recordings on New Year's eve. Thankyou! -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.