I'm not convinced you will need any amplifier... There should be enough power in the air to drive a passive 3-way splitter. If not, you would need to use a high input amplifier such as the Winegard HDP-269 or Antennas Direct CPA-19. Other amplifier designs are likely to be overloaded by the combination of strong local signals including FM stations.
I've not had the DB4e in hand. It comes from a manufacturer who has earned a good reputation. The published "Gain vs. Azimuth"
http://www.antennasdirect.com/cmss_f...y/DB4E-TDS.pdf suggests it could work quite well for you. You want signal to make it in 'the back door' so you can receive WXII and WUNL.
@ Antennas Direct, Thanks for publishing more detailed information for your antenna products.
@ Channel Master, Can you take a hint?