What type of communication allows for jam-free communication among military units via the internet?

Tactical Chat (TC) is designed specifically to enable jam-free communication among military units using the internet. It operates over secure internet protocols, ensuring that personnel can exchange messages and information in real time without interference from electronic jamming, which can be a significant concern in military operations. This capability enhances situational awareness and coordination among units in the field, allowing for effective command and control even in contested environments.

Tactical Data Link (TDL) refers to standardized communication methods for exchanging tactical data, which typically includes information such as location and status of assets but is not specifically focused on text-based communication like Tactical Chat. Video Data Link (VDL) serves a different purpose, primarily dealing with video transmission rather than text-based communications. Intelligence, Surveillance, and Reconnaissance (ISR) encompasses various methods and systems for gathering information about enemy forces and terrain, but does not directly deal with the real-time communication aspect facilitated by Tactical Chat.