HF communications are still a crucial part of military communications. These are likely to be AM (amplitude modulation), but might be worth checking FM as well. If you’ve had success hearing activity on any of the following drop a comment below and let me know what you’ve heard. There has been numerous audio recordings captured from these frequencies that are entirely in the clear (no encryption). Intelligence has been floating around social media listing potential Russian frequencies being used by forces in Ukraine. Russian Military Shortwave Frequencies (Updated ) That incident led to the RTL-SDR enthusiast blog to issue a warning to current Ukrainian SDR enthusiasts. Stan was arrested by Russian Federal Security Services and is currently in prison in Moscow, Russia on charges he is a Ukrainian spy. Stanislav Stetsenko was a resident of Crimea and regularly monitored ADS-B traffic. However, there have been warnings about what running a SDR available to the Internet could mean for Ukrainian citizens. As of this writing, there are still WebSDRs active within Ukraine.
SDRs located in Ukraine give you the ability to monitor the airwaves from the middle of potential military action. Web-based Software Defined Radios (SDR) have exploded in popularity in recent years. Mickey Gurdus in his shack listening to radio transmissions in 1991.
