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Standard US TV frequencies are separated into four groups of contiguous frequency ranges. It looks like your frequency table is looking for the "center" frequency of each channel (one channel is 6 MHz wide, and the center frequency is simply the center of each channel).
For example, channels 2, 3, and 4 are on frequencies 54-60, 60-66, and 66-72 MHz, respectively. The center frequency of each of these channels is 57, 63, and 69 MHz.
The four frequency ranges are as follows (just remember that each channel occupies 6 MHz):
Channels 2-4 are on frequencies 54-72 MHz
Channels 5-6 are on frequencies 76-88 MHz
Channels 7-13 are on frequencies 174-216 MHz
Channels 14-69 are on frequencies 470-806 MHz
The US channels used to go up to channel 83, with channels 70 thru 83 occupying frequencies 806-890 MHz, but those frequencies have been reassigned for other purposes now.
The FCC has already auctioned off the spectrum in the 700 MHz band, so any US TV channels occupying channels will need to vacate those frequencies over the next couple of years (the highest valid TV channel will end up being channel 51, which tops out at 698 MHz).
Your frequency definitions look like they currently go from 473-851 Mhz, which correspond to the center frequencies of channels 14 thru 77. This means that you currently have no way of getting the tuner to go to channels 2-13. Since I'm not familiar with the operation of the SV8000, I'm not sure how you would go about adding the definitions for the multiple frequency groups, but there's probably a straightforward solution to this.
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