HMC698 Datasheet provides typical SSB Phase Noise @ 10 kHz offset @ 100 MHz square wave ref. and Pin = 0 dBm as -153 dBc/Hz.
Do you have similar spec but with 300 MHz square wave ref.? Would I estimate -148 dBc/Hz @ 10 kHz offset @ 300 MHz square wave ref. and Pin = 0 dBm?