puterboy

2.4MHz from where to where?

OK - meanwhile, btw, here is the spectrum from 911 to 913 MHz -- and you can see a clear spike at 912.04 MHz that is -53dB relative to the...

OK here is with 2.4MHz sample rate and tuned to 912.6 MHz 

Sorry, I must have taken a bad snapshot. Here btw is one from another rtl_sdr dongle showing the same 912.04 MHz peak as in comment https://github.com/bemasher/rtlamr/issues/305#issuecomment-2270263681 

My gain is set to the default for Airspy-SDR. OK - maybe the problem is that I was using "Direct Sampling (I Branch)." When I switch to "Direct Sampling (Q...

I should also note that the interference is less late at night -- as evidenced by the fact that in the past hour I have been able to pick up...

Ahhh... I had gain set to 0 (default) and I was not using quadrature samplling Here is what it looks like with Quadrature Sampling and AGC:  I...

Now here is something really weird.. Correlating the "blackout" periods when I had trouble with reading my electric meter with the temperature, I found that the blackout periods were substantially...

I'm thinking more and more that you are right and that it's not the R900 -- indeed, I spoke to the city engineer and the R900 cellular unit doesn't broadcast...

Just a correction to my previous post - even the LTE device does have a 900MHz transmitter though it seems to transmit readings about every 2 hours This compares with...