FightingIrish said:
SUPERCASTER said:
Here is a copy of a recent e-mail to
www.green960.com
How can your station claim to be "green" when you broadcast using the most interfering, inefficent, heat producing, needless, energy wasting technology ever, HD radio?
You are inefficiently wasting additional electricity to broadcast to a tiny handful of power hungry HD radios?
The "green" slogan must be a joke, or stand for greed, not the environment.
-Dave
Since the board editor has been selectively chopping this thread up, I will at least say that HD Radio broadcasts amount to roughly 1% of the power of the regular signal. Since KKGN is 5000 watts, that would make the HD signal about 50 watts. Not sure what the shutting down of a 50 watt transmitter equals in regard to cars per year taken off the road, but I'm willing to bet it's not much.
I will also mention that one could easily pay a visit to the HD Radio board to see what the original poster's opinions are of the technology.
Your figures for power consumption to generate HD radio signals are totally wrong.
You quote power output not power input. It takes much more
power input to a transmitter to generate HD radio digital signals then it does to generate analog AM or FM, creates much more loss in the form of heat (power dissipation) and in addition, extra wasted power for additional cooling is usually required to be added to the transmitter building.
Here are impartial power consumption test results from CBC radio for HD FM:
Conclusion: In some of these cases, the injection of 100 W of IBOC power leads to the generation of up to 5 to 6 kW of extra heat in the room,
with an ancillary impact on HVAC systems. None of these combining techniques are extremely simple to implement. The choice will depend
on the existing infrastructure.
http://www.cbc.radio-canada.ca/technologyreview/pdf/issue4-trial.pdf
The situation is similar for HD AM, consuming much more
input power then required to generate equal power AM analog RF signals, and creating more heat to generate the HD digital AM signals then a high efficiency analog (only) AM transmitter.
Your "FightingIrish" example (above) is a false and misleading representation of the necessary
input power consumption for HD radio.
More to come...