(I) read you loud and clear.
1. Lit. a response used by someone communicating by radio stating that the hearer understands the transmission clearly. (See also Do you read me?) Controller: This is Aurora Center, do you read me? Pilot: Yes, I read you loud and clear. Controller: Left two degrees. Do you read me? Pilot: Roger. Read you loud and clear.
2. Fig. I understand what you are telling me. (Used in general conversation, not in radio communication.) Bob: Okay. Now, do you understand exactly what I said? Mary: I read you loud and clear. Mother: I don't want to have to tell you again. Do you understand? Bill: I read you loud and clear.