All of these Amplifiers will Pass HDTV, DTV and Analog Signals. Those that have a Specific Band-Pass from 54, up to 950 or 1000 MHz are good for VHF/UHF and FM also... Making Them Suitable for Home use of Off-Air and Cable TV. Those Amplifiers with Band-Pass Specific to 2150 MHz means that they Boost Satellite Signals... If these same Amplifiers have a Start Frequency of between 5 and 54 MHz, they are Wide-Band and Carry Cable TV or Off-Air in Addition to the Satellite Signals. If the Star Frequency is around 950 MHz, then they are Solely for Satellite Carriage. The Gain or "Boost" of an Amplifier is Rated in db and really should be selected on the Signal Loss of the System that they are Intended for use with... In other words, Total the loss of the Cable and Passives (Splitters) that are in line to the Location that You need extra Signal to, and select an Amplifier whose Gain comes close to matching the Loss you are Desirous of Overcoming. Bigger is NOT always Better (You don't want to much Gain as it may Lead to Distortion), and ALWAYS check your Connections and Splitters for Problems or Faults that may be the Source of Your Problems First, before automatically assuming you need an Amplifier.