[old_tv_nut]

There are a lot of pluses and minuses involved. Low VHF leaks over the horizon much more easily than UHF. On the other hand, the FCC did not take into account ambient electrical noise when setting the power level for low V digital, only the opposing consideration to protect analog from co-channel during the transition. It is unlikely that ATSC 1.0 broadcasts in low V will get any power increase in the future. It remains to be seen if the power levels may be boosted for ATSC 3.0. In opposition to the idea of boosting power for ATSC 3.0 is the idea of using single-frequency networks (multiple small transmitters of the same signal all aimed closely at a given market). These will even out the signal level across a market, but cause it to drop off more steeply outside that market.