The 134M4-26 is a part of the Teledyne line of mobile radar target simulator models. It is a compact, lightweight, highly portable, and rugged system designed to provide realistic radar targets at short, medium and long ranges. The system can provide real world targets of varying sizes, speeds, altitudes and ranges. It includes user-selectable target and measurement qualities, including Doppler modulation and RF jamming. The 134M4-26 also includes a sophisticated antenna system with servo controls and selectable polarizations. This system can be operated either manually or through a remote controller, making it suitable for a wide range of training and mission support requirements.