RG-59

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RG-59/U is a specific type of coaxial cable, often used for low-power video and RF signal connections. The cable has a characteristic impedance of 75 ohms.

It can be used at baseband video frequencies or, for short distances, at broadcast frequencies. Its high-frequency losses are too great to allow its use over long distances at broadcast frequencies; in these applications, RG-6 is used instead.

RG-59 is also frequently used to sync 2 digital devices to transfer information. This is called word clock. Most oftenly used in the recording and professional audio industry to sync adat optical devices. With out a word clock sync, there is commonly no audio signal, or it sounds choppy.