Quote:
Originally Posted by dtvmcdonald
We've had a channel 9 physical around here since the digital start.
Its not hard to get at all. Lots of people get it on a UHF double bowtie antenna.
High VHF would be really easy, even compared to UHF, to get if the FCC assigned just a bit higher power. Low vhf would need substantially more
power from the power line than analog, or more bays, to get reliably
digital.
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I think "substantially more power from the power line than analog" is not quite right, since the assigned power of the digital signal was significantly less than an analog station on the same VHF channel. "Substantially more power than the current digital transmitter" is correct.
Hi VHF example: WLS-TV in Chicago, RF channel 7 for both analog (55 kW ERP) and digital (4.75 kW ERP).
Low VHF caps: analog 100kW; digital 10 kW or 45 kW depending on location. In general, the licensed digital power is adjusted downward to solve interference issues.
High VHF caps: analog 316 kW; digital 30 kW or 160 kW depending on location. In general, a particular station's licensed digital power is adjusted downward to solve interference issues.