How it limesdr work TX below 30mhz on gnuradio, change code?

Projects LimeSDR
1

I test some project control signal on 27mhz, but set frequency to below 30mhz result still 30mhz.
How let it work change code and reprogram?
I get similar code like “if (targetRfFreq < 30e6) targetRfFreq = 30e6;”, i changed but not work.
Whether some similar code on FPGA , driver or FX?
Please help me !

2

I think this is where you would need to engage the NCO. @IgnasJ should be able to advise.

3

Ok how to set :grinning:

4

GNU radio uses SaopySDR and as far as I know SoapySDR should be using NCO automatically when <30MHz.

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