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Very good ! I use an STM32F CPU with it's main input clock driven from a 10MHz?OCXO 143-141 (plenty of cheap used ones on aliexpress), I feed the filtered long wave RF signal (from a small tuned

Very good ! I use an STM32F CPU with it's main input clock driven from a 10MHz?OCXO 143-141 (plenty of cheap used ones on aliexpress), I feed the filtered long wave RF signal (from a small tuned

Interesting - I have a pile of old Motorola Oncore M12 GPS modules. They are all EOL due to the data roll-over issues but does anyone know if I can still use them for the 1PPS output? Thanks,Larry

It's actually deconvolution ( https://en.wikipedia.org/wiki/Deconvolution ) and it can work as the tinySA RBW filters are well defined and are fairly steep. The required memory may be too high and the

Here you see the adaptive algorithm working. It starts with 1 second per measurement and as long as the error is below the measurement accuracy for the current measurement time the measurement time is

I have very little knowledge of DSP, so would appreciate if anyone here can help out. One of our club members M0KGW suggested that the RBW of the tinySA or homebrew simpleSA could be improved using

Nice! Yet again you tempt me into building something - I already have a GPS with 1sec pulse and serial connected to a nano currently just used as a shack clock and a 1pps repeater (hardware, not via

Anyone looking for a GPSDO with a frequency accuracy in the order of 1e-8 should have a look at this: http://roland.cordesses.free.fr/GPS_Si2cor.html I made a quick and very dirty build of his design

Not wanting to answer your questions in detail I suggest you to study the concept of Intermodulation Intercept, both for 2nd and 3rd order. This concept states that with every dB reduction of one of

Sorry long post Since i saw posting on mixer at time of TinySa development hot time in this forum, i would appreciate advises on how mixer reacts to signal coming from different PORT and LEVEL. This

The following link may be of assistance, tinySA | Main / Measuring Third Order Intermodulation ( https://tinysa.org/wiki/pmwiki.php?n=Main.IIP3 ) , the information is for the commercial implementation

Hi, did someone try to measure IMD with 1 to 2 kHz carriers spacing with TinySA? What is the frequency limit? 73' F4BSP #imd

Interesting and easy to understand instruction video for NanoVNA: https://www.youtube.com/watch?v=_pjcEKQY_Tk _._

Might be interesting... https://www.instructables.com/Dual-Trace-Oscilloscope/?utm_source=newsletter&utm_medium=email Arv _._

Might be interesting... https://www.instructables.com/Make-Your-Own-OscilloscopeMini-DSO-With-STC-MCU-Ea/?utm_source=newsletter&utm_medium=email Arv _._

Hi Dave, thanks for the hints with the vias to the lower ground plate. I used the same "flying" construction for the BPF as Erik did - and after adding a lot of vias this reduced the noice floor at

Can I suggest you take a look at the nanoVNA source code? In the nanoVNA the two outputs of the SI5351 are constant 5kHz apart. -- HBTE Files section: /g/HBTE/files Erik, PD0EK

Hello "high performance" - please define "high" . There is always cross talk in any circuit. It is only a matter of how much. Using two devices should not break the bank I guess. antenna analyzer -

Hi Dave, thanks for the help. I tested version 0.12 today, the color setting for the markers works really well after the TFT_eSPI v2.3.4 upgrade. At first it didn’t work - but I found the cause and

Hi Gyula I am using the latest version of TFT_eSPI available from the arduino library manager - 2.3.4.? Any version later than 2.2.16 should be fine.? I see 2.2.16 is not available in library