The NX3248Y from Narda-ATM is a Noise Source with Frequency 4 to 8 GHz, Excess Noise Ratio (ENR) 30 to 35 dB, Flatness ±1 dB, Temperature Coefficient 0.01 dB/Degree C, Voltage Coefficient 0.1 dB/%V. Tags: Module with Connectors. More details for NX3248Y can be seen below.