EL/CK 13 Cryptographic Device

The EL/CK 13 Cryptographic Device was an important step in the development of national encryption capabilities. The initial device was built on the technological knowledge of its time and became the predecessor of later versions with improved functionality.

The development focused on secure transmission and reception of encrypted messages, operational reliability, and use through remote control. The project demonstrated KETAK's ability to evolve secure-communications systems with long-term operational value.