The IFR model 3413 is an RF signal generator that features: Frequency Range: 250 kHz - 3 GHz RF Optimization Modes: Auto, Low Noise, Low ACP, and High Power, Output Levels -140 dBm to +13 dBm, Frequency Resolution 1 Hz, AM, FM, Phase and IQ Modulation Formats, GPIB, RS-232 and Ethernet Interfaces.