Hi Adrian I am sure it is not a dumb question !
2.4Ghz, well it really depends on the environment you are targeting. Indoors, indoors+close outdoors in urban, rolling hills, mountains.... But in general if you just take the worst case scenario and design for that, you'll be OK. If your system is dynamic-adaptive, well that is a way to go, also. Make the most of good conditions when they are good. cheers On 20/09/2017 2:56 AM, Adrian Musceac wrote: > Hi, > > Thank you everyone, very valuable advice in this thread! I will not ignore it. > > Helmut, the USRP B20x variants are my main target, so be sure I'll be > testing with them, it's just not a priority now. Let me explain why > the RTL-SDR: lots of folks have this cheap dongle, and it's a very > good introduction into this world. It also imposes severe limitations > on my code, which is quite painful. > > Glen, I have a dumb question: your data on 2.4 GHz contradicts some of > the models I use. What kind of foliage do you have? Metal buildings? > If you have any statistical data, I will gladly add the model to > qradiopredict. > > 73, > Adrian YO8RZZ > > On 9/19/17, glen english <g...@cortexrf.com.au> wrote: >> As long as you look after an overload or an intermodulation condition, I >> don't see a problem with the RTL-SDR. The phase noise wont matter for >> low density modulation types like QPSK... >> >> But as Helmut says, looking after the overload or intermod , SFDR >> condition will be very important >> >> 8 bit is fine for low dynamic range narrowband applications. >> >> if a nice big multi resonator coupled filter is used, the RTL SDR should >> be OK / protected.. >> >> so , lots of front end filtering... >> >> On 19/09/2017 2:28 AM, Helmut Oeller wrote: >>> Hi Adrian, >> >> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Freetel-codec2 mailing list >> Freetel-codec2@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >> > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
