Re: NanoVNA firmvare, compiled by DiSlord #firmware


David J Taylor
 

@Dislord: The latest 1.0.3 writes wrong frequencies on the SDcard.
Here is for example a scan from 1M-2500M
..
2112655000 -0.012137460 -0.015095832
2125150000 -0.029366880 -0.017602918
2137645000 -0.027875872 -0.019973416
-2144827296 -0.013422614 -0.008787844
-2132332296 -0.014856866 -0.020597850
-2119837296 -0.006149918 -0.009707472
..
===================================

Looks like the numbers are being interpreted as signed 32-bit numbers. 2,147,483,647 is the maximum. Need to be 64-bit numbers (as unsigned "only" takes you to 4.29 GHz).

[For my own software I use double precision floating point.]

Cheers,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

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