Would anyone have measured the max output power of his LimeSDR-USB ? Could anybody make the small test below and tell me the value they get?
I get repeatedly with Soapy or Osmosdr values of -33 to -26dBm far below the +10dBm announced by LimeMicro team. With Soapy (Pothos actually) or osmosdr (GRC), when sending with a gain of 52 some white noise on 1 or 5MHz wide (CW) or a pure sinusoidal, with the lime usb directly attached by a SMA cable to a RF powermeter (a pro tool from R&S), I get the dBm written above. I can of course increase gain to 64, but distortion arises as expected (and output goes up to -20 -18dBm).
Lime team published once a .ini file for Limesuite to, say, reach 10dBm, but Limesuite is so little documented that the .ini is almost unusable to understand the difference between Soapy or Osmosdr and Limesuite…
Thanks for your help!