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Does soapy_power ensure LimeSDR TX mode is off (if actually needed) ? #4

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mariocannistra opened this issue May 5, 2017 · 1 comment

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@mariocannistra
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In this post here https://discourse.myriadrf.org/t/limesuite-tx-mode-and-fft-viewer-issues/991 you can read that LimeSDR has TX mode enabled by default (not sure if this is due to the default.ini file or actually a default behaviour of the HW).
If spurious emissions by the board itself can be received ... then I could get corresponding RFI in my radioastronomy scans at HF.

Could you please check if the init sequence used by soapy_power ensures the TX is off ? That post mentions the necessary settings.

I still couldn't verify presence of those emissions experimentally (looking at the plotted FFT) but will certainly do this as soon as I can.

@mariocannistra
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I got an answer from @tony.bigbee on this thread here https://discourse.myriadrf.org/t/limesuite-tx-mode-and-fft-viewer-issues/991/5
...I think that if the board keeps the last settings used, then there's the risk that using soapy_power just after testing with TX on, would have TX mode still active if the mode is not cleared by soapy_power...

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