On 02/15/2019 06:01 PM, Varban Metodiev via USRP-users wrote:
Dear all,
This is my first post here and I would dare to ask you for help on the
following ridiculous situation. So... I am experiencing the following
issue on two USRP b205mini boards:
1) From the UHD Sink block in GnuRadio, configured to transmit from 0
to 30dBm gain, I cannot get any transmission on the spectral analyzer.
I am connecting the board via the -30dBm attenuator inbetween.
2) Same is observed not only from GnuRadio, but also from the USRP
examples (like tx_waveforms).
3) When setting the board up for reception from GnuRadio - it works
great.
Could you please advise what I could have done wrong?
Thank you in advance.
Regards,
Varban
What frequency are you trying to transmit on?
The TX gain range on the B2xx series is 80dB or so--that means that
setting it to 30 is 50dB below the maximum signal output power, which is
about +5dBm. So you may not see it at those very low levels.
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