some things worng with my lna
hello long time since last posted and yet we still havent detected a single hydrogen line
(we are using a horn antenna with aluminium tape, and a noolec sdr and lna ) before we bought the new sdr (the nooolec one) we were using rtl sdr v3 and there was a dc offset to strong after we changed to the noolec version there is no more dc offset peak but when i give the power to the lna the whole spectrums ground shakes and after background correcting still no hydrogen line
for lna the gain does go up when i turn it on and the amount is centered in 1420mhz so the amplification does work but cant understand why the ground shakes
i have seen many references that worked with the same things we have
At this point i really dont know what to do does anyone have an advice?? plz help
