Marcus Thanks for the link. Very interesting work. I have an AirspyR2 and SpyVerter running on HF on a square 24 foot TFD RHC and LHC.
This is my station. http://101science.com/K4LED.html Looking forward to the B210 and learning to use GNU Radio. Larry, K4LED > On Jul 13, 2020, at 10:57 AM, Marcus D. Leech <[email protected]> wrote: > > On 07/13/2020 10:52 AM, Larry Dodd wrote: >> Marcus >> Fantastic. Which SDR do you use with GNU Radio? >> Larry > Many of them :) > > Depends on the application. For pulsar work and interferometry, I use the > B210. I run a small not-for-profit that does radio astonomy > research: > > http://www.ccera.ca > > And I also am on contract with Ettus for technical support work. > > >> >>>> On Jul 13, 2020, at 10:48 AM, Marcus D. Leech <[email protected]> >>>> 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 <[email protected]> >>>>>> 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 >>>>>>>> <[email protected]> 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 >>>>>>>>>> <[email protected]> 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 >>>>>>>>>> <[email protected]> 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 >>>>>>>>>> [email protected] >>>>>>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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