What frequency is commonly used for MULTICOM communications in the U.S.?

The frequency that is commonly used for MULTICOM communications in the U.S. is 122.9 MHz. This frequency is designated for non-towered airports and is utilized for general aviation communications when pilots need to communicate with each other regarding their intentions, such as coordinating traffic and announcing their position.

Using this frequency helps to enhance safety and situational awareness, particularly in areas where multiple aircraft may be operating without an air traffic control tower. It serves a critical function in facilitating communication among pilots in these environments. Understanding the appropriate use of MULTICOM frequencies is essential for drone operators and pilots to ensure safe operations in shared airspace.

Other frequencies listed, such as 121.5 MHz, are designated for emergency purposes, which is not applicable in this case. The frequency 122.5 MHz is often used for other purposes but is not specifically designated for MULTICOM in the same way. 123.0 MHz does not have a defined use for MULTICOM communications. Thus, 122.9 MHz is the correct and widely recognized frequency for MULTICOM in the U.S.