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op25 at zellners.com op25 at zellners.comQuoting Graham Norbury <gnorbury at bondcar.com>: > Airspy @ 15,15,15 > > > RTL @ 47 > I'll have to rerun the test to see.. I don't think real numbers were put in as I was expecting to get an option for "MASTER" I've since disabled that in the other software to use CORRECTLY as the device provides gain versus some pseudo control which I don't know what its doing.. I didn't get any movement at all in the signal on any of those gain settings, but I also don't think I limited to 1-15 either.. I will retry since I've play'd with the other software to see what settings seem to give the best SNR... > Of course, in the real world you'd tune the gain(s) to find the best > SNR, which is typically the point just before the noise floor starts > rising appreciably. Thats what is done, on the production unit. I admit to upping it a little for rain fade, stray pine needles etc. for some fade margin. Which does resolve those... I also use dedicated and professional LMR antenna and cables, ie:LMR400, yagi at site etc.. I try to make up with things at the antenna not at the other end. I also use the constellation to get a good pattern and go from there. With a good pattern there 99% of the time the rest will take of itself. Mostly. Now that I know the other is creating a fake setup, and what really should be done I can test again. Thanks.