robmx
11-02-2003, 06:15 PM
Originally posted by jdmcdonald on AVSFORUM
NEWS FLASH!!! HUMAN CLONING SUCCESSFULL .... STORY AT
10 UNLESS YOU ARE TOO FAR FROM TRANSMITTER AND IT IS
DVB-T.
...to reiterate ... yes, SOME small area can receive mobile
TV from low power DVB-T stations in some cases ... but the
area is small, and it really does not work all that well.
In fact, the results are so bad that the Europeans are in
fact busily designing an ENTIRE NEW TRANSMISSION SYSTEM
called DVB-H to enable actual, practical (i.e. not needing
two antennas per set, as DVB-T does) mobile and portable
reception system, to be called DVB-H.
And this system will offer only a very limited bitrate per MHz.
GEAR wrote:
DVB-H as Doug knows is designed to lower the power requirements of the receiver so that battery life can be prolonged in a cell phone DTV receiver.
As Doug also knows this is not an entire knew transmission system but a tweak on the current system to address what has been addressed by the Japanese ISDB-T system. ISDB-T is basically a tweak of the DVB-T sytem itself.
The current DVB-T system does not need two antennas to be very mobile even in New York City. One 3 inch antenna works fine. Two offers better reception at speeds over 50 mph because of doppler effects.
The "small" area that Doug talks of can as he again knows be any coverage area you want. It is just a matter of power levels, height of broadcast antenna and number of transmitters.
At higher power levels the coverage area is the same for DVB-T COFDM and 8-VSB. At any power level and in any terrain over any coverage area DVB-T will offer simple easy reception to a far higher % of receivers than 8-VSB.
Doug always talks of the greater power requirements of DVB-T compared to 8-VSB. Which is confusing to some since most of the world operates with DVB-T at miniscule power levels compared to 8-VSB power levels in the US.
And at those miniscule power levels DVB-T beats the pants off 8-VSB in say a city like New York. I will put our 1kW up against Doug's 5,000,000W 8-VSB transmitter any day in Manhattan.
It must be frustrating as all hell for Doug not to be able to do anything but talk about it. He nor anyone has or will show up to test the BS they spew.
We are here. Waiting. In New York. Anytime. It is called the real world Doug. Not your fantasies.
BTW Linx was invited also.
NEWS FLASH!!! HUMAN CLONING SUCCESSFULL .... STORY AT
10 UNLESS YOU ARE TOO FAR FROM TRANSMITTER AND IT IS
DVB-T.
...to reiterate ... yes, SOME small area can receive mobile
TV from low power DVB-T stations in some cases ... but the
area is small, and it really does not work all that well.
In fact, the results are so bad that the Europeans are in
fact busily designing an ENTIRE NEW TRANSMISSION SYSTEM
called DVB-H to enable actual, practical (i.e. not needing
two antennas per set, as DVB-T does) mobile and portable
reception system, to be called DVB-H.
And this system will offer only a very limited bitrate per MHz.
GEAR wrote:
DVB-H as Doug knows is designed to lower the power requirements of the receiver so that battery life can be prolonged in a cell phone DTV receiver.
As Doug also knows this is not an entire knew transmission system but a tweak on the current system to address what has been addressed by the Japanese ISDB-T system. ISDB-T is basically a tweak of the DVB-T sytem itself.
The current DVB-T system does not need two antennas to be very mobile even in New York City. One 3 inch antenna works fine. Two offers better reception at speeds over 50 mph because of doppler effects.
The "small" area that Doug talks of can as he again knows be any coverage area you want. It is just a matter of power levels, height of broadcast antenna and number of transmitters.
At higher power levels the coverage area is the same for DVB-T COFDM and 8-VSB. At any power level and in any terrain over any coverage area DVB-T will offer simple easy reception to a far higher % of receivers than 8-VSB.
Doug always talks of the greater power requirements of DVB-T compared to 8-VSB. Which is confusing to some since most of the world operates with DVB-T at miniscule power levels compared to 8-VSB power levels in the US.
And at those miniscule power levels DVB-T beats the pants off 8-VSB in say a city like New York. I will put our 1kW up against Doug's 5,000,000W 8-VSB transmitter any day in Manhattan.
It must be frustrating as all hell for Doug not to be able to do anything but talk about it. He nor anyone has or will show up to test the BS they spew.
We are here. Waiting. In New York. Anytime. It is called the real world Doug. Not your fantasies.
BTW Linx was invited also.
