The DSG836A has a maximum output frequency of 3.6GHz whilst maximum output power is +20dBm (typical). The DSG836A also provides frequency and level sweep functions AM/FM/ØM analogue modulations as well as a power pulse modulation function. DSG800A's come with an IQ modulator. With all of these features, the DSG836A is an excellent source for high quality signals (including RF, LF, sweep pulse and a variety of analogue modulated signals) and for use as a stable reference.