What is used to select plain text (PT) non-encrypted or cipher text (CT) encrypted communication on an AN/PRC-152A radio?

The Cipher Switch is the component used on the AN/PRC-152A radio to select between plain text (PT) and cipher text (CT) communication. This switch allows operators to toggle the radio’s encryption settings, enabling them to choose whether they want to transmit information in an unencrypted format (plain text) or in a secure encrypted format (cipher text). The versatility of this switch is crucial for maintaining communication security and adapting to different operational requirements.

Using the Cipher Switch ensures that only authorized users have access to sensitive communications, thereby enhancing operational security. That makes it a vital feature for tactical operations where confidentiality is essential. While other components such as the Mode Switch, Control Panel, and Encryption Keypad have their specific functions, they do not directly control the selection between plain text and cipher text communication in the way the Cipher Switch does.