A 12 dBi CDMA panel antenna with a TNC connector is a directional antenna designed for CDMA (Code Division Multiple Access) networks. It offers a gain of 12 dBi, meaning it can amplify signals by a factor of 12 decibels, and it uses a TNC (Threaded Neill–Concelman) connector for secure attachment to devices. These antennas are commonly used to improve signal strength and range in CDMA communication systems