You are right Marcus, but it is negative gain, and I wonder why USRP source allows me to specify more than 20 db of gain for wbx, without any warning. In fact what happens when u specify some gain value, how is configuration of the path set?
Thanks On Wed, Oct 9, 2013 at 4:55 PM, Marcus D. Leech <mle...@ripnet.com> wrote: > On 10/09/2013 10:51 AM, Nemanja Savic wrote: > >> Hi, >> >> as far as I can see the only thing on wbx board that has adjustable >> feature in rx path is attenuator, everything else has fixed gain. Am I >> missing something here? >> >> Best and thanks, >> Nemanja >> >> The way variable gain is nearly-universally implemented in RF systems is > with an attenuator in the RF path. So, that 31.5dB variable attenuator > *is* the variable gain. > > > -- > Marcus Leech > > Principal Investigator > Shirleys Bay Radio Astronomy Consortium > http://www.sbrac.org > > -- Nemanja Savić
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