HAARP (High-Frequency Active Auroral Research Program) is a high-powered radio transmission research facility in Alaska jointly operated by the US Navy, Air Force and several universities; a BIG particle gun.
RCON is a text based protocol completely unrelated to the Source RCON protocol. It is designed with readability, ease of implementation, and human usability in mind.
RCON Tutorial. Patch 185.0 introduced the RCON-Feature. It allows you to execute commands on your server without having to be in-game. That is a huge improvement over the previous mechanic, because it allows you to automate commands, and generally do stuff on machines where you canât simply start up the game. Setup.