Note down the strongest GSM frequencies you can find. Using NFM, it will sound something like the example audio provided below. This is a non-hopping GSM downlink signal. Open up SDRSharp, and scan around the 900 MHz (or 850 MHz) band for a signal that looks like the waterfall image below. If you have an E4000 RTL-SDR, you may also find GSM signals in the 1800 MHz band for most of the world, and 1900 MHz band for the USA. For most of the world, the primary GSM band is 900 MHz, in the USA it starts from 850 MHz. LibreCellular: Easy 4G Cellular Network with LimeSDR and Intel NUCįirst, you will need to find out at what frequencies you have GSM signals in your area. ExtIO with Decimation & Tuner Bandwidth Controls.Manual gain controls and decimation driver.
Measuring Traffic Volumes with Passive Radar.SignalsEverywhere Direction Finding Tutorial.Measuring Filter Characteristics & VSWR.Performing Replay Attacks with RTL-SDR and RpiTX.QRP (FT8, JT9, WSPR etc) Monitoring Station.Decoding 433 MHz ISM Band Weather Stations.GOES 16/17 and GK-2A Weather Satellite Tutorial.
0 kommentar(er)
