The network tells the phone which channels to use. The trick to increasing capacity in cellular networks is to reduce the transmitter power and cell size. This increases frequency reuse.
I can't help thinking of the major flaw of the Norden bombsight, not knowing the winds and weather conditions in the area between the aircraft and target. It could drop a bomb in a pickle barrel under ideal conditions, which rarely existed in the real world.
The important question is, will it still be actively supported in five years? Microsoft has a bad habit of releasing products in response to short-term needs, only to let them die when the threat has passed.
Microsoft's definition of cross-platform: Vista and Windows XP. Anything that threatens the hegemony of Windows must be destroyed. Standards are for losers.
I did business with a web store that offered a cash discount to any purchaser that wrote a glowing review of them on a retailer rating site. The store owner honestly did not seem to understand what was wrong with his new method of promoting his web store. The owner of the retailer rating site had to explain to him what the rating site considered acceptable conduct. I wouldn't have been as nice about it.
The problem is that you are using an ISM (industrial, scientific, and medical) band, which is a fancy way of saying RF garbage dump. You have no regulatory protection from interference. The FCC puts things like microwave ovens in ISM bands.
I've never seen a convincing argument for switching to DC distribution. I've seen many places that have hundreds of racks running off standard AC without problems. It's time-tested technology that is well-understood, standardized, and cheap. Telcos are a special case, as they evolved in an environment where everything ran off batteries.
Voltage regulation. The voltage regulator needs to be physically close to the circuits that it supplies in order to provide high quality power. To see an extreme case, look at the power supply circuits for the CPU on your motherboard. They are right next to the CPU socket. A modern Intel CPU is an incredibly demanding load.
Low voltage doesn't mean low power. You will have to deal with arcs and electrical fires. I've seen lots of screwdrivers and wrenches that were melted when someone accidentally shorted a low voltage power source to ground. Even worse is what happens when people wear rings and metal watch bands around hot circuits.
They should just ban negative option service contracts. There's too much incentive, even for legitimate companies, to structure them in a way that rips off their customers. I'm tired of being told that all I had to do to cancel was to send a passenger pigeon to Tierra del Fuego between the hours of 0300 and 0400, exactly 13 days before the contract is automatically renewed.
Part of it is that the documentation sucks, or doesn't even exist. The last time I bought a copy of Office, I received a box containing a CD and a license code. When did it become acceptable to deliver software with no documentation?
It isn't Microsoft's fault. I've gotten used to the institutional paranoia that is rampant in the today's electronics industry. Everything is a trade secret. Schematics, if available, are mostly useless. When the product's functionality is hidden inside FPGAs and microcontrollers with proprietary firmware, you're screwed. In the old days, they used standard parts and you could learn something by reading the schematics, which were included with the product.
I think the problem is the huge amount of customization that they have to perform on any commercial aircraft to meet the requirements of Air Force One. Besides communications and emissions security, they have to be able to fly around in the middle of a nuclear war, without landing, for extended periods of time. Everything would have to be shielded against EMP. I read that the engines have extra oil tanks, so that they don't run out of lubricating oil during extended flights. They can refuel in air. They have countermeasures against surface-to-air missiles.
That's not what I said. I was looking for documented instances of anyone actually cooking their guts, as described in some urban legends.
I used to regularly get safety bulletins warning employees not to wear contacts while doing electrical work or carry disposable butane lighters while arc welding. The contacts would get stuck to your eyeball and a butane lighter could explode with the force of a quarter-stick of dynamite. All bullshit, but many people, including safety managers, believed it.
I'm not going to stand in front of a high-power RF emitter. I'd rather be safe then sorry, and I've worked around systems that combined multi-kilowatt transmitters with very high-gain antennas. I'd rather not get premature cataracts or some other injury. I don't worry about cell phones or VHF/UHF hand-held radios, which can often put out 5+ Watts on their high power setting. The only injury that I've seen real documentation on for hand-held radios is the accidental firing of electrical blasting caps that were carried next to a radio that was accidentally switched into transmit mode.
Some disks have always been shipped formatted because they were used in systems that could not format their own disks. That was common for 8" floppy disks. See the DEC RX01 for an example.
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The network tells the phone which channels to use. The trick to increasing capacity in cellular networks is to reduce the transmitter power and cell size. This increases frequency reuse.
Two words. Passive termination. You don't need to leave the cable box on.
The ATSC channel bandwidth is slightly more than 19 Mbps.
I can't help thinking of the major flaw of the Norden bombsight, not knowing the winds and weather conditions in the area between the aircraft and target. It could drop a bomb in a pickle barrel under ideal conditions, which rarely existed in the real world.
The important question is, will it still be actively supported in five years? Microsoft has a bad habit of releasing products in response to short-term needs, only to let them die when the threat has passed.
Congratulations, you've made quite a number of assertions, and every one of them is false. Do a little research next time.
Microsoft's definition of cross-platform: Vista and Windows XP. Anything that threatens the hegemony of Windows must be destroyed. Standards are for losers.
That's much better than Voskhod 2, which also landed off-course in the Urals in similar circumstances, and was surrounded by hungry wolves.
http://www.astronautix.com/flights/voskhod2.htm
I did business with a web store that offered a cash discount to any purchaser that wrote a glowing review of them on a retailer rating site. The store owner honestly did not seem to understand what was wrong with his new method of promoting his web store. The owner of the retailer rating site had to explain to him what the rating site considered acceptable conduct. I wouldn't have been as nice about it.
The problem is that you are using an ISM (industrial, scientific, and medical) band, which is a fancy way of saying RF garbage dump. You have no regulatory protection from interference. The FCC puts things like microwave ovens in ISM bands.
It's dB (ratio), not dBm (power level). See http://www.antenna-theory.com/basics/antennapol.php.
That might pay for a requirements analysis, but that's about it. A real system is going to be much more expensive.
I've never seen a convincing argument for switching to DC distribution. I've seen many places that have hundreds of racks running off standard AC without problems. It's time-tested technology that is well-understood, standardized, and cheap. Telcos are a special case, as they evolved in an environment where everything ran off batteries.
Voltage regulation. The voltage regulator needs to be physically close to the circuits that it supplies in order to provide high quality power. To see an extreme case, look at the power supply circuits for the CPU on your motherboard. They are right next to the CPU socket. A modern Intel CPU is an incredibly demanding load.
Low voltage doesn't mean low power. You will have to deal with arcs and electrical fires. I've seen lots of screwdrivers and wrenches that were melted when someone accidentally shorted a low voltage power source to ground. Even worse is what happens when people wear rings and metal watch bands around hot circuits.
They should just ban negative option service contracts. There's too much incentive, even for legitimate companies, to structure them in a way that rips off their customers. I'm tired of being told that all I had to do to cancel was to send a passenger pigeon to Tierra del Fuego between the hours of 0300 and 0400, exactly 13 days before the contract is automatically renewed.
Part of it is that the documentation sucks, or doesn't even exist. The last time I bought a copy of Office, I received a box containing a CD and a license code. When did it become acceptable to deliver software with no documentation?
PIO and DMA have been around for over 50 years. That's a bit longer than the ATA interface.
It isn't Microsoft's fault. I've gotten used to the institutional paranoia that is rampant in the today's electronics industry. Everything is a trade secret. Schematics, if available, are mostly useless. When the product's functionality is hidden inside FPGAs and microcontrollers with proprietary firmware, you're screwed. In the old days, they used standard parts and you could learn something by reading the schematics, which were included with the product.
Steve Ballmer and the Download Experience, coming soon to a venue near you.
I've heard rumors that many government procurement managers are really pissed off at Boeing, and are more than willing to consider alternatives.
I think the problem is the huge amount of customization that they have to perform on any commercial aircraft to meet the requirements of Air Force One. Besides communications and emissions security, they have to be able to fly around in the middle of a nuclear war, without landing, for extended periods of time. Everything would have to be shielded against EMP. I read that the engines have extra oil tanks, so that they don't run out of lubricating oil during extended flights. They can refuel in air. They have countermeasures against surface-to-air missiles.
That's not what I said. I was looking for documented instances of anyone actually cooking their guts, as described in some urban legends.
I used to regularly get safety bulletins warning employees not to wear contacts while doing electrical work or carry disposable butane lighters while arc welding. The contacts would get stuck to your eyeball and a butane lighter could explode with the force of a quarter-stick of dynamite. All bullshit, but many people, including safety managers, believed it.
I'm not going to stand in front of a high-power RF emitter. I'd rather be safe then sorry, and I've worked around systems that combined multi-kilowatt transmitters with very high-gain antennas. I'd rather not get premature cataracts or some other injury. I don't worry about cell phones or VHF/UHF hand-held radios, which can often put out 5+ Watts on their high power setting. The only injury that I've seen real documentation on for hand-held radios is the accidental firing of electrical blasting caps that were carried next to a radio that was accidentally switched into transmit mode.
Another Southern saying, "Some people just need killin'". God made Man, but Colonel Colt made them equal.
Some disks have always been shipped formatted because they were used in systems that could not format their own disks. That was common for 8" floppy disks. See the DEC RX01 for an example.