Marcus Fantastic. Which SDR do you use with GNU Radio? Larry > On Jul 13, 2020, at 10:48 AM, Marcus D. Leech <patchvonbr...@gmail.com> wrote: > > On 07/12/2020 11:38 PM, Larry Dodd wrote: >> Marcus >> Strictly receiving Jupiter storms and solar flares. As a Radio Jove member >> for a couple years now we have recorded many Jupiter storms in the 15 to 30 >> MHz range. They are generally of three types. S bursts, L bursts and N >> events. We send the SDR data stream to Radio Sky Spectrograph software. The >> files are archived for study by NASA scientists and other researchers. >> Jupiters moon Io plays an important roll in directing these storm impulses >> to earth. We have special software that predicts the probability of >> receiving the storms based on Earth, Jupiter, and Io orbital positions. I >> can send you sample spectrograms if desired. We also study ionospheric >> events, galactic background noise, and some celestial scintillations. Yes >> RFI is a problem but there are software mitigation techniques. >> Larry, K4LED > Thanks, Larry. > > Yes, I'm familiar with all of that. I've been doing radio astronomy on and > off since 1986, and started using SDR/Gnu Radio for it in 2004. > > I did some work for Natural Resources Canada on riometers a couple of years > ago, and have been involved in riometer development with > Gnu Radio since 2010 or so. > > >> >>>> On Jul 12, 2020, at 11:16 PM, Marcus D. Leech <patchvonbr...@gmail.com> >>>> wrote: >>> >>> On 07/12/2020 10:59 PM, Larry Dodd wrote: >>>> Marcus >>>> Ok Thanks for the information Marcus. I have both a Spyverter and >>>> Ham-it-up already. I may get an N210 eventually. The X series >>>> unfortunately are out of my funding range. I appreciate your expertise and >>>> advice. Thanks! >>>> Larry, K4LED >>>> >>> Incidentally, what kind of radio astronomy are you planning to do at that >>> frequency range? It's mostly, as you might expect, "a mess", but >>> some discrete frequencies are available for things like riometry, and >>> looking at solar and jupiter radio bursts... >>> >>> >>>>>> On Jul 12, 2020, at 10:08 PM, Marcus D. Leech <patchvonbr...@gmail.com> >>>>>> wrote: >>>>> On 07/12/2020 09:42 PM, Larry Dodd wrote: >>>>>> Marcus >>>>>> Actually I don’t have the B210 or the LFRX yet as I just ordered them >>>>>> but that’s all I ordered. Do I need to cancel the order? >>>>>> Larry, K4LED >>>>> The LFRX will be of no use to you unless you have a platform that it can >>>>> plug in to. >>>>> >>>>> I'd keep the B210 part of the order, and order a HamItUp or SpyVerter >>>>> upconverter module, which up-converts HF frequencies to >>>>> a higher range that the B210 can tune to. >>>>> >>>>> HamiTup is sold by NooElec, and the SpyVerter is sold by >>>>> https://airspy.com/spyverter-r2/ >>>>> >>>>> Again, the LFRX is a "daughtercard", which is used in various USRPS that >>>>> use the daughter-card architecture, like the USRP1, USRP2, >>>>> N2xx, X3xx, B100, and E100. >>>>> >>>>> But the B210 is an excellent machine, it's just that it doesn't tune down >>>>> to HF frequencies. But with the addition of a (fairly cheap, IMHO) >>>>> up-converter, you can explore the territory you're interested in quite >>>>> nicely. >>>>> >>>>> In terms of software, it really depends on what you want to *do*. If you >>>>> just want an integrated FFT display that can cover your 15MHz >>>>> of bandwidth, you can use the uhd_fft application, and have it sample at >>>>> 15Msps--this assumes your computer is able to "keep up" >>>>> at that rate--a good USB3 controller will be required, and a good >>>>> multi-core machine to go with it. >>>>> >>>>> >>>>>>>> On Jul 12, 2020, at 8:06 PM, Marcus D Leech <patchvonbr...@gmail.com> >>>>>>>> wrote: >>>>>>> The B210 is self contained and tunes down to 50Mhz at the lowest. The >>>>>>> LFRX is for other types of USRPs. So first things first, what type of >>>>>>> USRP do you have? >>>>>>> >>>>>>> Sent from my iPhone >>>>>>> >>>>>>>> On Jul 12, 2020, at 7:43 PM, Larry Dodd via USRP-users >>>>>>>> <usrp-users@lists.ettus.com> wrote: >>>>>>>> >>>>>>>> I need to set up a GNU HF spectrum analyzer with a waterfall using my >>>>>>>> B210, LNA, and LFRX daughter board. The target would be a 15 to 30 MHz >>>>>>>> (or wider) instantaneous spectrum for Radio Astronomy work. Rather >>>>>>>> than re-creating something that already exists where could I get a >>>>>>>> similar GNU flowgraph? Since I am brand new to USRP any advice is very >>>>>>>> welcome. >>>>>>>> Thanks, >>>>>>>> Larry, K4LED >>>>>>>> _______________________________________________ >>>>>>>> USRP-users mailing list >>>>>>>> USRP-users@lists.ettus.com >>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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