> WBBM, analog Ch 2 in Chicago was assigned Ch 3 digital, and it was a
> train wreck. Ch 12 was available after the analog 12 in Milwaukee
> shut down, and they took it.
Even high VHF (Ch 7-13) suffers from noise and interference not present
in the lower UHF channels. In addition, the propagation/allocation
models were seriously flawed - many of those with high VHF allocations
found it was necessary to increase ERP by 3 to 6dB to match previous
coverage while those with low UHF (channels 19-40) allocations found
performance exceeded expectations even before "maximization".
73,
... Joe, W4TV
On 7/6/2012 8:58 PM, Jim Brown wrote:
> On 7/6/2012 1:54 PM, Jim Barber wrote:
>> There are still stations operating ATSC on channels 2-13.
>> (54-216mHz)
>
> There are relatively few full power DTV stations on Channels 2-6, a lot
> more on 7-13. A quick search of the FCC database will yield details.
>
> http://www.fcc.gov/encyclopedia/tv-query-broadcast-station-search
>
> As Joe noted, it's impulse noise and the rules about power. WBBM,
> analog Ch 2 in Chicago was assigned Ch 3 digital, and it was a train
> wreck. Ch 12 was available after the analog 12 in Milwaukee shut down,
> and they took it.
>
> 73, Jim K9YC
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