Lee Patton wrote: > > After looking at the data sheets for all components on the DBSRX, I > gather that the RF LNA and IF low-pass filter gain control, both of > which are in the MAX2118, are the two variable gain amps to which you > are referring. Is that correct?
Yes > daughterboard gain (79dB) + PGA gain (20dB) = 99dB. The DBSRX returns > 104dB. Where does the extra 5dB of programmable gain come from? (It > looks like it is the "dl" variable in your code, but I don't know what > that corresponds to. Please see below) Yes, it comes from dl. dl turns on a 5dB gain amp in the chip. > > To minimize noise, I would assume that when setting the gain it is > preferable to fist max out the RF LNA, then the IF gain control, and > finally the PGA. Is that correct? Yes Matt _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
