Philips indoor antenna?

[Jeffery]

i have a Philips indoor antenna model number ( SDV2210/17 ) UHF/VHF/FM and the only channels i can get from it is 5.1 (which is CBS) and 5.2 (which is the CW) i would like to know how come i can't get channel 7 i would like to watch the middle and modern family on Wednesday nights any help would be appreciated