I also have the same problem on both Tx and Rx; selecting the RF amp attenuates the signal both receive and transmit. I also notice that selecting RF amp on also appears to shift some of spurious? signals down in frequency by some kHz on a FFT display when using osmocom_fft -a hackrf -v
Cheers, Graham Cottew Technology Director Zendata Pty Ltd +61417722400 On 23 Dec 2014, at 1:23 am, Rémi Laisné <[email protected]> wrote: > Hi, > I replaced the two U13, like Paul suggested, but it didn't solve my problem. > Signal still show weaker when switching RF gain from 0 to 14 db. > > Do you have another idea of what could have been broken ? > > > 2014-12-05 13:04 GMT+01:00 Rémi Laisné <[email protected]>: > Ok thanks for your answer. > I followed this tutorial : > > http://goughlui.com/2013/11/10/rtl-sdr-a-tool-for-visualizing-broadcast-satellite-signals/ > > As showed, the author plugged the lnb out directly to rtl sdr without > attenuator. (?) Plus, he got strong signals, I couldn't get such strong > signals with hackrf. (When rf front-end amp worked) > > > _______________________________________________ > HackRF-dev mailing list > [email protected] > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
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