I am using the HMC253QS24 RF switch to serially modulate a set of lasers.
The problem I am running into is that when I try to pass RF below ~25 MHz, my signal becomes massively attenuated. This does not happen when I remove the RF switch from my system. Please see my crude illustration of the problem (attached). Am I missing something? Unless I am reading this wrong, the switch should be able to pass anywhere from DC to 2.5 GHz RF signals.