[ADTech]

Swapping to a CM5016 makes little sense. While it will work better on high-VHF, it includes low-VHF element that have nothing to do (KRVD-LP is not on the air with little prospect of ever being built). Likewise, there's nothing coming off Mt Wilson that a 7084 is going to pick up. Plus, the CM5016's UHF performance is less than that of a C2V.

So, back to your original question of "Will a pre-amp help?". The answer is "it depends".

If the problem is simply low signal level coming off the antenna, the answer becomes "Probably some, maybe".

If the problem is local interference typically cause by electrical stuff, the answer is "No".

Try an FM filter first (Radio Shack 15-0024, $5) to see if it's local FM that's the problem. If not, then add a suitable pre-amp such as the CM7778 or the inexpensive RCA pre-amp.

However, as has already been noted twice, your most likely way to improve reception of channels 7-13 is to simply move up to a more capable VHF antenna. Our ClearStream 5 would be suggested (it can be combined with the C2V's UHF section) or your could go much larger with a 10-element high-VHF antenna with it's much increased size and performance. You might also start over with a large (10-14') 7-51 combo.