70 MHz - 6 GHz spectrum analyser & tracking generator
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On Sun, Mar 8, 2020 at 04:43 AM, David J Taylor wrote:
Looks like Signals Everywhere did an overview of mods in his "Adalm Pluto SDR Tutorial: 70Mhz to 6Ghz and Dual Core CPU Modification": Looks like he has another firmware update video also: Not sure about normalization and whatever performance verification like calibration pre-processing or smoothing can be done... to improve performance maybe? |
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From: jafinch78 .
Looks like Signals Everywhere did an overview of mods in his "Adalm Pluto SDR Tutorial: 70Mhz to 6Ghz and Dual Core CPU Modification": Looks like he has another firmware update video also: Not sure about normalization and whatever performance verification like calibration pre-processing or smoothing can be done... to improve performance maybe? =========================== The bandwidth extension and dual-core modifications have been around for a long time, done by many, and on both my Plutos. Yes, the current firmware is required, but it's been some time since it was released. I must confess to preferring information from the source rather than 3rd party videos. Calibration is included, and seems pretty good. A 10 dB attenuator is added on both TX and RX ports "to improve matching". I don't see any means of receiver calibration. Peak hold is included, but not smoothing or averaging, although I would expect these to be added as the software develops. Would be helpful as can be seen from the attached! Cheers, David -- SatSignal Software - Quality software for you Web: Email: david-taylor@... Twitter: @gm8arv |
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From: Leif M
Are any these able to show close sidebands. Like what happens with 1kHz or 100Hz SSB modulation ================================ The minimum receiver bandwidth range is currently 2 MHz, but the Pluto can be used very successfully as a narrow-band receiver so I think this is just a programming limitation at the moment. You could buy the programmer (that's NOT me) a beer or two via PayPal along with with request for narrower receiver spans! Cheers, David -- SatSignal Software - Quality software for you Web: Email: david-taylor@... Twitter: @gm8arv |
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From: Pierre Martel
Hi David, Do you have some information about the maximum dynamic range the pluto can do in sa/tg mode? ==================================== Pierre, I've not seen any specifications for that, but here's a quick plot of the RTL-SDR 88-108 MHz bandstop filter compared with a Rigol DSA-815. I would reckon 60 dB at that frequency, and that's with the 10 dB attenuator on the Pluto TX and RX ports. The plots were made some time apart. I looked on the RTL-SDR site for their response plot, but it seems to be missing.... Cheers, David -- SatSignal Software - Quality software for you Web: Email: david-taylor@... Twitter: @gm8arv |
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On Fri, Mar 13, 2020 at 11:26 AM, Gufo Rosso wrote:
Being like a cost effect development board student hack-able device... looks like reading into a little more some are changing the TXCO to a 0.2ppm. Wondering if there are better like external input capabilities (using the lab GPSDO) and using more capabilities on the chips for more performance? Looks like the sampling rate limit of the signal path is the USB 2.0, so wondering about that hack too. Looks like the AD9361 datasheet grid array ( ) is different... plus might not be many options for other chips using a CSP BGA adapter sockets if thinking using a different chip. Checked and even on Aliexpress the socket adapters are half as much as the Pluto. First time for me looking at BGA socket adapters, interesting. |
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From: jafinch78 .
Being like a cost effect development board student hack-able device... looks like reading into a little more some are changing the TXCO to a 0.2ppm. Wondering if there are better like external input capabilities (using the lab GPSDO) and using more capabilities on the chips for more performance? Looks like the sampling rate limit of the signal path is the USB 2.0, so wondering about that hack too. Looks like the AD9361 datasheet grid array ( ) is different... plus might not be many options for other chips using a CSP BGA adapter sockets if thinking using a different chip. Checked and even on Aliexpress the socket adapters are half as much as the Pluto. First time for me looking at BGA socket adapters, interesting. ============================= There's a lot of discussion on Twitter about the Pluto, for example follow: It's a continuing development, so input and suggestions may not be amiss. "Next gen libiio being worked on - if you have feedback, let us know. (Key thing is faster)." Next generation hardware (if there's one) will likely be more expensive. [Me: I'm waiting for a debugged, big screen, cased, with battery, 3 GHz+ NanoVNA-<whatever>] Cheers, David -- SatSignal Software - Quality software for you Web: Email: david-taylor@... Twitter: @gm8arv |
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Hi,
i tried today the latest satsagen software version with my GPSO modified adalm pluto and I always get a "xo_correction return error Unknown error". I run the adalm sucessfully with 25 Mhz...not with 40Mhz (I changed the clock via software configuration). The adalm works fine with all other applications like the sdr-console. Does someone know what i can do? Thx Josef ================================== Ask in the Satsagen group, perhaps? /g/satsagen Cheers, David -- SatSignal Software - Quality software for you Web: Email: david-taylor@... Twitter: @gm8arv |
David J Taylor
jafinch78 .
Alberto