Low noise amp
Posted: Tue Jul 23, 2019 2:02 pm
I have recently installed a 20db gain LNA in my attic connected to either a discone or a dipole for NOAA Satellites.
The SDR I am using is sdrplay rsp1a. I have noticed a marked improvement in the signals received however I am a bit puzzled by the gain settings on the sdr software. In both Sdruno and SdRconsole, changing the gain level has little effect on Smeter reading. Initially I set the gain low too prevent any overloading but really it had little effect. I have noticed on SdRconsole that as I change the gain, the signal strength shoots up then suddenly then backs off. I have tried adjusting the agc but it has little effect. This seems to happen in both AM and FM. Is the rsp1a merely controlling the signal level to prevent overloading?
The SDR I am using is sdrplay rsp1a. I have noticed a marked improvement in the signals received however I am a bit puzzled by the gain settings on the sdr software. In both Sdruno and SdRconsole, changing the gain level has little effect on Smeter reading. Initially I set the gain low too prevent any overloading but really it had little effect. I have noticed on SdRconsole that as I change the gain, the signal strength shoots up then suddenly then backs off. I have tried adjusting the agc but it has little effect. This seems to happen in both AM and FM. Is the rsp1a merely controlling the signal level to prevent overloading?