[USRP-users] B210 GNU HF Spectrum Analyzer

Marcus D. Leech patchvonbraun at gmail.com
Sun Jul 12 22:08:48 EDT 2020

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 

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 <patchvonbraun at 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 at 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
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>>> USRP-users mailing list
>>> USRP-users at lists.ettus.com
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