Set gain of limesdr

i just get the limesdr,and i am using limesdr with LimeSuiteGUI,
i follow the instruction here,
transmit a test siganl ,and observe with spectrum analyser ,but i found that the output of limesdr is too small,
just -35dBm,and i change the table of TBB Frontend gain to the max value 63,
so i think the Frontend gain is not work well,so i wnat to know how to set the gain of limesdr

I want to know this too. Have you figured out?

I don’t know about setting gains in LimeSuiteGUI.
SoapySDR interface allows you to set the gains.
The gr-limesdr block for GNU Radio combines all gains into one gain value.