What is the Q code that means "I will call you again" in amateur radio?

The Q code "QRX" means "I will call you again" or simply "Stand by." It is commonly used when an operator needs to pause the conversation briefly, perhaps to check something or answer another call, but intends to return to the frequency shortly. It is important to distinguish QRX from other similar-looking Q codes. For example, "QRT" means to stop transmitting entirely (closing the station), not just pausing. Meanwhile, "QRS" is a request to send Morse code more slowly, and "QRZ" asks who is calling. Remembering that the 'X' in QRX can symbolize a temporary crossing or holding pattern can help you memorize its meaning.