Welcome to the forum, saddleback
Thanks for the photo.
It is the real channel number that determines what antenna is needed.
VHF-Low, real channels 2-6
VHF-High, real channels 7-13
UHF, real channels 14-51
The virtual channel number (like 5.1) is a holdover from the analog TV days to maintain the identity of the station, and is what the TV displays.
The DB4E is primarily for UHF channels, but 7, 11, and 9 are on VHF-High. The DB4E doesn't have much gain on VHF, but it might be OK for 36, 43, and 48.
For 7, 11, and 9 you could try an MCM 30-2475 and combine it with the DB4E with a UVSJ UHF/VHF Separator-Joiner.
http://www.mcmelectronics.com/produc...-2475-/30-2475
UVSJ
https://www.antennasdirect.com/store...Combiners.html
NOT the MCM 33-2230
An alternative to the two antenna system would be a UHF/VHF combo antenna like the Winegard HD7694P.
You will need to use a preamp like the RCA TVPRAMP1R. It has two antenna inputs that eliminate the need for a UVSJ. I use it with a GE 34792 Attic/Indoor antenna, but my signals are stronger than your signals.
https://www.walmart.com/ip/RCA-Anten...ifier/14554631
If I were there, I would first try the 30-2475 and the preamp for 7, 11, and 9.