What is the phonetic code for the letter "O"?

The phonetic code for the letter "O" is "Oscar." Phonetic alphabets, such as the NATO phonetic alphabet, are utilized to avoid confusion when spelling out letters over communication channels, particularly in noisy environments or over radio transmissions. Each letter in the alphabet is assigned a specific word to represent it clearly, and "Oscar" is the designated term for the letter "O."

This system aids in ensuring accurate communication, especially in military and aviation contexts where clarity is crucial. The words chosen are often selected for their distinctiveness and ease of pronunciation, allowing for quick and effective conveyance of information.