What You’ll Need A HackRF, LimeSDR, BladeRF, or PlutoSDR. These SDRs can transmit. If using a HackRF, make sure you have a TCXO (Temperature Controlled Crystal Oscillator). A Linux VM or Host. Note: Both flags on this project can be found without using an SDR, but without an SDR with…
Decoding a BPSK Signal Binary phase shift keyring or BPSK is the simplest form of digital phase modulation. Depending on the phase of the signal, the hardware or software decodes a zero or one. In this exercise dervied from the DoD Hack-A-Sat challenge, Phasor, you will decode a BPSK signal…
About GNU Radio GNU Radio is one of the primary tools used for studying, decrypting, and generating radio communications. GNU Radio is both a Python library and graphical front end for generating python radio programs. Users create programs by dragging blocks onto a workspace and connecting block outputs into block…
APT stands for automatic picture transmission–a form of radio communication to send black and white images over an analog audio channel modulated in FM. Many weather satellites such as NOAA-15, NOAA-18, and NOAA-19 broadcast live images of Earth using the APT format. You can find out more about this type…