The Vintage Magnetic CB Ham Radio Coiled Mobile Antenna Big MAMA is a classic and reliable antenna designed for vintage CB radios. The Big Mama brand ensures quality and compatibility with a variety of mobile/in-vehicle radios. With a single input and output, this Pro Com Coil model provides a strong signal for your communication needs. Its compact size makes it easy to install and use on the go, making it a valuable addition to any vintage radio enthusiast's collection.