The occupiers have switched their "Molniya" drones to frequencies that detectors cannot pick up – Flash

Russian occupation forces have begun upgrading their "Molniya"-type unmanned aerial vehicles by switching them to new radio frequencies, making them difficult to detect by most Ukrainian electronic intelligence systems. 

This was reported by Sergey “Flash” Beskrestnov, a radio technology specialist and advisor to the Minister of Defense.

According to the military expert, the enemy has begun using a specific video frequency range on these UAVs within 4.1–4.5 GHz (focusing particularly on the 4.3–4.5 GHz band). Serhiy Beskrestnov warned that most of the popular drone detectors currently in use by the Defense Forces are either completely unable to detect drones operating at these frequencies or detect them too late and with poor quality, which requires the rapid adaptation of Ukrainian electronic warfare and electronic intelligence capabilities.

Serhiy “Flash” Beskrestnov wrote about this on his Facebook account.

Government agencies in Ukraine must urgently review their approaches to the use of backup power systems connected to the global network. Serhiy Beskrestnov, a leading expert in radio technology and advisor to the Ukrainian Minister of Defense, known by the call sign “Flash,” called for these security measures. 

Russian troops have begun attacking vehicles and logistics on the Kharkiv–Sumy highway, attempting to replicate Ukrainian tactics of striking supply routes. A section near the border has come under attack, where the enemy is actively trying to hinder movement.