rtl-sdr.com

airspy hf discovery is the best thing for HF SDR.

169 Bucks, but worth it.

filters in front of A/D's, poly-phase sampling. very very sensitive radio.

i often use 192khz BW for weak AM and SSB signals.

a great radio that i use with my homemade loop antenna.

Video for Project. Matlab code and wave files are linked in youtube comments section. https://www.youtube.com/watch?v=rZXqwQKWL3Q bandwidth of signal around 20khz RTL-SDR is used as RX, record FM demod audio signal, Fs = 48khz matlab processes audio signal and converts back into HD Grayscale image.

https://www.youtube.com/watch?v=WizRxGH0jpA


a very detailed video to show you how to setup the RTL-SDR for first time use.

thanks for watching

https://www.youtube.com/watch?v=-nm2xZxt938


Alien Radio Signals from space on 900Mhz

movie frames converted to spectrum.

https://www.youtube.com/watch?v=fSTAkSyGfC0

SDRAngel is the rx software.
rtl-sdr dongle is the rx hardware.

i/q generator and hp vector sig gen is the tx source.

can link matlab code for anyone who cares.