🚀 go-pugleaf

Ian S. Salisbury wrote:
> Ron T. wrote:
>> "John Hines" <john@jhines.org> wrote in message 
>> news:rtji545a49152p741khacmo14v9s7uh9ja@4ax.com...
>>> On Wed, 18 Jun 2008 10:09:59 -0500, "Ron T." <not@home> wrote:
>>>
>>>> Being an inquiring mind that wants to know, I was in touch with some 
>>>> station
>>>> engineers about the digital wave coming, and the fact that their 
>>>> digital
>>>> signals were a fraction of their analogs.
>>> suppposedly once the analogue signals are shut off, they are gonna
>>> crank up the power on the digital ones.
>>
>> I was wondering about this, but I'm not crazy about what I'm finding out.
>>
>> Where I'm at, the digital side of the stations are from iffy to just 
>> not there.
>>
>> When I check the database, I see stations running like 100kw ERP, and 
>> then the digital side goes from 18kw, 7kw, and 3.4kw.
>>
>> The station engineer, stating that the digital signal could 
>> "theoretically" go farther, caught me off guard. If you have, say, a 
>> 180 mhz signal at 10kw, it doesn't matter if it's carrying an analog 
>> or digital content, it's going to be the same damn signal strength 
>> under whatever conditions at whatever distance.
>>
>> The analog signal, however, will be usuable (though degraded) far 
>> beyond a digital signal which I believe drops usability somewhere 
>> around 25-30%.
> I'm just guessing, but you may be able to increase the distance of a 
> usable digital signal by increasing the number of parity bits.  Then it 
> becomes a matter of how big of a buffer the receiver has, and how much 
> of a delay is acceptable.

Guess#2  DirecTV sends a digital signal over a pretty big distance, 
would an analog signal make it that far without scattering and bouncing 
and reflecting all over the place, even interfering with itself?

There's some ham operators in here, aren't there?