Using HMC241ALP3 from 20 - 100MHz


What is the limitation when using the part HMC241ALP3 below 100MHz? The former part HMC241LP3 is defined DC to 4GHz, and for the best of my understanding both parts HMC241ALP3 and HMC241LP3 are FFF. Please advise what is the performance in the frequency range 20 to 100MHz