The AGC in those devices were for the RF stage, not the audio stage. It was necessary for AM radio because weaker signal meant less volume. AGC remained in FM radios and TV, but because weaker signals in those modulations did not affect volume level, the AGC does not keep volume constant. Instead the AGC is used to control the signal level in the receiver, to keep levels appropriate for the intermediate stages.
Location data based on IP address will not work on a cell phone. At least not on the Verizon network. I'm not sure how IP addresses are assigned by them, but it seems that they have blocks that are used to cover very wide areas. I live in the midwest, and the location for my IP regularly shows up as 2-3 states away. Provides for some fairly amusing "targeted" ads on occasion.
Air temperature then was still close to the low for the night, around 50 degrees. While this is a lot cooler than the 90 degrees eventually reached that afternoon, it is still well above the standard atmosphere, and still clearly puts density altitude above pressure altitude. Atmospheric pressure was very close to standard, by the way, so there was no boost in density there.
Of course, these weather stations all measure temperature at the ground, most around 6000 ft. So let's look at this another way. In order for the air at 13,000 ft to be at a density altitude under 11,000 ft, it'd have to be at about -20 degrees. The normal lapse rate is around 3.5 degrees per 1000 ft. Thus, the expected temperature given 50 degrees at 6000ft is around 25 degrees at 13,000 ft. Unless the lapse rate was more than double the standard atmospheric model, the density altitude places that helicopter above it's service ceiling.
If I had to guess, I'd say that even in the early morning cool temperatures, that aircraft was still being operated in excess of its expected performance.
Well, since we have historical weather data for the area available, it isn't hard to guess what the density altitude would be. Looking at weather reports for the 17th from stations in the area, temperature rose pretty quickly once the sun was up. The article says early morning, but without a more exact time the quick temperature swing makes it harder to pin down.
At any point after 8am, the temperature profile looks to be quite a bit above standard atmosphere, meaning density altitudes were higher than pressure altitudes. Barring some unusual atmospheric conditions the density altitude at around 10,000 feet was probably closer to 12,000-14,000 depending on how high the temperature got at the time of the accident. The pilot underestimating the quickly rising temperature may have even been a factor.
If 11,000 feet is in fact the correct value for the service ceiling of the aircraft, I would say this situation was caused by the decision to fly a heavily loaded aircraft outside of its performance envelope.
I would love to be able to use my PC as a DVR for my DirecTV box. There's no way I'm going to use their shitty hardware or pay their outrageous monthly fees just to record HD content. The fact that there's a monthly fee just for access to HD channels is already ridiculous.
Commercial and private areas of an airport are separate. To leave a private aircraft and board a commercial flight, you would have to go through security the same as everyone else. You would also not be allowed outside on the ramp in the commercial areas.
..like maybe that allowing these people to walk through airports with weapons unchecked might lead to some of those weapons making it aboard planes that are *not* privately owned??
I've probably posted enough times in this story for this to be getting redundant, but airports don't work that way. Passengers of private aircraft board their aircraft at private businesses at the airport. They do not use the main terminal, and do not at any time mix with passengers on those aircraft. I'm sure that people flying with weapons regularly fly out of commercial airports, they just never go through security since their only interactions at the airport are with a private business who doesn't care what they carry on the aircraft.
This is one of the dumber comments I've seen in this discussion. That incident changed nothing. I can still walk on to an airport and get in a private plane without ever speaking to anyone. At a commercial airport, I might have to have a badge, or an escort, but generally the private aircraft are served from a separate ramp, so all they worry about is people crossing over to the commercial side.
In a previous comment, I mention that commercial passengers and private aircraft are served in different areas. What I didn't explicitly say is that these passengers are never allowed to mix and couldn't pass things to one another. At least this is how it has been at every airport in the US I've ever been to.
I'm not sure exactly what you're trying to say here, since there is no such thing as a "class A" airport in the United States. Airport classes are given for the airspace surrounding them, and seeing as class A airspace doesn't touch the ground, it's kinda hard to have an airport there.
Class B airports are the largest, and even at those airports, private aircraft do not have the passenger screening that commercial flights do. This is because private aircraft board their passengers through private businesses at the airport. I have never, ever, seen an airport that ran private flights through the main airport terminal, unless that airport had no commercial service and thus there was only a single terminal.
It'd be pointless for them to do so, as they could just land at an airport that isn't designated as an airport of entry, and thus doesn't have customs.
I'm not sure why people would still be complaining about that, seeing as Dell released a firmware update in July that removed that restriction. Yeah, it was a dick move, but at least Dell listened to customers and fixed things.
The sad part is, even though my composite plane will (hopefully someday) be light-years ahead of what the general-aviation guys are flying, it's still a design from the late 70's.
You have to be kidding, right? Have you just ignored all of the more recent developments in general aviation? There's all kinds of composite aircraft out there. In fact, Diamond and Cirrus both are using composite construction across their entire product lines. They also have the most up to date glass cockpits, as well as a lot of advanced features you probably aren't going to be seeing on any homebuilt.
As far as I can tell, Cessna are only interested in stamping out their ancient designs for the rest of time.
Really? So I guessed you missed them buying Colombia Aircraft, formerly Lancair Production Aircraft. They're making an entire line of composite aircraft now under the Corvalis name. I guess you can knock points off for them buying the designs instead of designing them in house, but Cessna is much more focused on jets than single engine piston aircraft.
Yeah, I agree that homebuilding is dying, but it has nothing to do with nobody trying to innovate. I would say it's mostly due to flying just not being very special anymore. It's a mundane, boring, everyday kind of thing that just isn't exciting to joe six-pack. If you want to bring it back into focus, put some effort into popularizing the new category of light sport aircraft. Those aircraft are probably the only hope of aviation actually becoming affordable for a large number of people to become interested in aviation again.
Go try and buy new tires and see how far you get when you refuse to tell the dealer your name. He (or rather, the government) wants a name associated with the tires RFID chips
As someone who sold tires for years, I can tell you that there's a foolproof way to get tires without giving out your name. I realize it's crafty and devious, which is why you may not have thought of it. Here it is: Make something up. Wild, I know, but there's about a 99% chance it will work because nobody gives a shit. Seriously, take off the tinfoil hat.
When I was working for a major chain selling tires, I asked for a name for one and only one reason. Our software wouldn't let me make an invoice without a name. It also required a few other things, but it's just as easy to make up a phone number too. If you lied to me at any point, how the hell would I know? It's not like I asked people to present ID to get tires.
You should tell him that he's not allowed to fly under 500 feet anyway anywhere under any circumstances
That's completely incorrect.
FAR 91.119c states - [No person my operate an aircraft below] an altitude of 500 feet above the surface, except over open water or sparsely populated areas. In those cases, the aircraft may not be operated closer than 500 feet to any person, vessel, vehicle, or structure.
Basically you can fly 10 feet off the surface if you want to, just don't get near an oil rig or a boat. Same thing goes for land, just stay away from houses and cars.
Hulu does ads in 'the right way'. They're exceedingly brief, rarely if ever over thirty seconds, and there's exactly one of them at any given time. An hour long show will play less than half a dozen.
Unfortunately this hasn't been true for some time. Hulu has been slowly but surely expanding their commercials to the point that there are now two in almost every break. Sometimes you get lucky and end up with two fifteen second spots, but often you're stuck watching two thirty second spots. They also added a commercial that plays before the show even begins, and have started cramming a few more breaks into opportunities in shows that they were passing up before.
It's still far better than watching on cable, but I have no doubt they will be right up to the same level of commercials eventually.
A quick FCC search shows that the station he refers to is in fact transmitting on channel 6. Having a local station that is also in the VHF-Lo band, I can attest to how utterly worthless it is for digital.
And channels 14-20(?) are reserved for land mobile.
Nope. There's a broadcast station near me that had analog on 17 and digital on 16. Analog is of course now gone, but the digital channel hasn't moved from it's assignment. Where my parents live there's a digital channel on 15. And yes, those are all really the channel assignments, not just keeping the old branding.
A quick search suggests that those land mobile assignments apply only to a list of 13 metropolitan areas. I don't get why the FCC hasn't given those guys the boot and let broadcasters take those frequencies. Those frequencies are just part of the Business Radio Pool, and there's plenty of other frequencies available, even in the 400MHz range. Hell, in recent history they've forced relocations for services far more important than that.
News flash - use Boost CDMA and you are using Sprint
Bullshit.
Boost uses Sprint, but gets none of Sprint's roaming agreements with other providers. That's a HUGE change to coverage. Those roaming agreements are the only reason Sprint has good coverage. Take away the ability to use those Verizon towers and your only hope is that you are one of the lucky few that live within range of a Sprint tower.
People aren't talking backwards, you've just never been in a situation where it is not natural to steer into the skid. I'm guessing from your description you were doing something like turning at an intersection where speeds are low and so is the distance covered. Take a right turn from a stop sign for example. In that situation, the perception is more that your car has turned too far, and you're now pointed at the curb instead of down the street. So you naturally turn left to point yourself back down the street.
Now imagine a snowy rural highway with a 90 degree curve to the right. It's a fairly broad curve, and banked a bit so you can maintain 55 through it. You hit an icy patch and start to slide. Yes, your car will be pointed too far to the right, but since you were going 55 mph this time your rear wheels aren't just going to rotate around the front. Your vehicle is going to slide up into the opposite lane. As you see yourself moving into the wrong lane, the natural reaction is to steer to the right even more to get back into the right lane. It can be pretty damn hard to do the correct thing and steer left, especially if the shoulder is coming up at you quickly.
They have this great thing called file sharing that takes care of that. Works great for my older mini that I'm using as a HTPC. Just avoid the POS that is Quicktime and even HD over wireless isn't a problem.
I believe what you posted is only a portion of the exploit. There are two test links provided later, using two different methods to try to launch calc. Did you try those links? Both worked for me, so I'm already looking into disabling it on our work machines.
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The AGC in those devices were for the RF stage, not the audio stage. It was necessary for AM radio because weaker signal meant less volume. AGC remained in FM radios and TV, but because weaker signals in those modulations did not affect volume level, the AGC does not keep volume constant. Instead the AGC is used to control the signal level in the receiver, to keep levels appropriate for the intermediate stages.
Location data based on IP address will not work on a cell phone. At least not on the Verizon network. I'm not sure how IP addresses are assigned by them, but it seems that they have blocks that are used to cover very wide areas. I live in the midwest, and the location for my IP regularly shows up as 2-3 states away. Provides for some fairly amusing "targeted" ads on occasion.
So when I ripped a good portion of my DVD collection to Xvid awhile back, that was illegal? I sure as hell don't think so.
Air temperature then was still close to the low for the night, around 50 degrees. While this is a lot cooler than the 90 degrees eventually reached that afternoon, it is still well above the standard atmosphere, and still clearly puts density altitude above pressure altitude. Atmospheric pressure was very close to standard, by the way, so there was no boost in density there.
Of course, these weather stations all measure temperature at the ground, most around 6000 ft. So let's look at this another way. In order for the air at 13,000 ft to be at a density altitude under 11,000 ft, it'd have to be at about -20 degrees. The normal lapse rate is around 3.5 degrees per 1000 ft. Thus, the expected temperature given 50 degrees at 6000ft is around 25 degrees at 13,000 ft. Unless the lapse rate was more than double the standard atmospheric model, the density altitude places that helicopter above it's service ceiling.
If I had to guess, I'd say that even in the early morning cool temperatures, that aircraft was still being operated in excess of its expected performance.
Well, since we have historical weather data for the area available, it isn't hard to guess what the density altitude would be. Looking at weather reports for the 17th from stations in the area, temperature rose pretty quickly once the sun was up. The article says early morning, but without a more exact time the quick temperature swing makes it harder to pin down.
At any point after 8am, the temperature profile looks to be quite a bit above standard atmosphere, meaning density altitudes were higher than pressure altitudes. Barring some unusual atmospheric conditions the density altitude at around 10,000 feet was probably closer to 12,000-14,000 depending on how high the temperature got at the time of the accident. The pilot underestimating the quickly rising temperature may have even been a factor.
If 11,000 feet is in fact the correct value for the service ceiling of the aircraft, I would say this situation was caused by the decision to fly a heavily loaded aircraft outside of its performance envelope.
This.
I would love to be able to use my PC as a DVR for my DirecTV box. There's no way I'm going to use their shitty hardware or pay their outrageous monthly fees just to record HD content. The fact that there's a monthly fee just for access to HD channels is already ridiculous.
Commercial and private areas of an airport are separate. To leave a private aircraft and board a commercial flight, you would have to go through security the same as everyone else. You would also not be allowed outside on the ramp in the commercial areas.
PUBLIC terminal which services private and public flights from the same common area
I highly doubt such an area would ever be allowed to exist.
..like maybe that allowing these people to walk through airports with weapons unchecked might lead to some of those weapons making it aboard planes that are *not* privately owned??
I've probably posted enough times in this story for this to be getting redundant, but airports don't work that way. Passengers of private aircraft board their aircraft at private businesses at the airport. They do not use the main terminal, and do not at any time mix with passengers on those aircraft. I'm sure that people flying with weapons regularly fly out of commercial airports, they just never go through security since their only interactions at the airport are with a private business who doesn't care what they carry on the aircraft.
This is one of the dumber comments I've seen in this discussion. That incident changed nothing. I can still walk on to an airport and get in a private plane without ever speaking to anyone. At a commercial airport, I might have to have a badge, or an escort, but generally the private aircraft are served from a separate ramp, so all they worry about is people crossing over to the commercial side.
In a previous comment, I mention that commercial passengers and private aircraft are served in different areas. What I didn't explicitly say is that these passengers are never allowed to mix and couldn't pass things to one another. At least this is how it has been at every airport in the US I've ever been to.
I'm not sure exactly what you're trying to say here, since there is no such thing as a "class A" airport in the United States. Airport classes are given for the airspace surrounding them, and seeing as class A airspace doesn't touch the ground, it's kinda hard to have an airport there.
Class B airports are the largest, and even at those airports, private aircraft do not have the passenger screening that commercial flights do. This is because private aircraft board their passengers through private businesses at the airport. I have never, ever, seen an airport that ran private flights through the main airport terminal, unless that airport had no commercial service and thus there was only a single terminal.
It'd be pointless for them to do so, as they could just land at an airport that isn't designated as an airport of entry, and thus doesn't have customs.
I'm not sure why people would still be complaining about that, seeing as Dell released a firmware update in July that removed that restriction. Yeah, it was a dick move, but at least Dell listened to customers and fixed things.
The sad part is, even though my composite plane will (hopefully someday) be light-years ahead of what the general-aviation guys are flying, it's still a design from the late 70's.
You have to be kidding, right? Have you just ignored all of the more recent developments in general aviation? There's all kinds of composite aircraft out there. In fact, Diamond and Cirrus both are using composite construction across their entire product lines. They also have the most up to date glass cockpits, as well as a lot of advanced features you probably aren't going to be seeing on any homebuilt.
As far as I can tell, Cessna are only interested in stamping out their ancient designs for the rest of time.
Really? So I guessed you missed them buying Colombia Aircraft, formerly Lancair Production Aircraft. They're making an entire line of composite aircraft now under the Corvalis name. I guess you can knock points off for them buying the designs instead of designing them in house, but Cessna is much more focused on jets than single engine piston aircraft.
Yeah, I agree that homebuilding is dying, but it has nothing to do with nobody trying to innovate. I would say it's mostly due to flying just not being very special anymore. It's a mundane, boring, everyday kind of thing that just isn't exciting to joe six-pack. If you want to bring it back into focus, put some effort into popularizing the new category of light sport aircraft. Those aircraft are probably the only hope of aviation actually becoming affordable for a large number of people to become interested in aviation again.
Go try and buy new tires and see how far you get when you refuse to tell the dealer your name. He (or rather, the government) wants a name associated with the tires RFID chips
As someone who sold tires for years, I can tell you that there's a foolproof way to get tires without giving out your name. I realize it's crafty and devious, which is why you may not have thought of it. Here it is: Make something up. Wild, I know, but there's about a 99% chance it will work because nobody gives a shit. Seriously, take off the tinfoil hat.
When I was working for a major chain selling tires, I asked for a name for one and only one reason. Our software wouldn't let me make an invoice without a name. It also required a few other things, but it's just as easy to make up a phone number too. If you lied to me at any point, how the hell would I know? It's not like I asked people to present ID to get tires.
You should tell him that he's not allowed to fly under 500 feet anyway anywhere under any circumstances
That's completely incorrect.
FAR 91.119c states - [No person my operate an aircraft below] an altitude of 500 feet above the surface, except over open water or sparsely populated areas. In those cases, the aircraft may not be operated closer than 500 feet to any person, vessel, vehicle, or structure.
Basically you can fly 10 feet off the surface if you want to, just don't get near an oil rig or a boat. Same thing goes for land, just stay away from houses and cars.
Those couple of shows they did mention, like Buffy the Vampire Slayer, were all those episodes already available for free?
At least the first four seasons of Buffy were up for free, but they mysteriously disappeared a month or two ago. Gee, I wonder why.
Hulu does ads in 'the right way'. They're exceedingly brief, rarely if ever over thirty seconds, and there's exactly one of them at any given time. An hour long show will play less than half a dozen.
Unfortunately this hasn't been true for some time. Hulu has been slowly but surely expanding their commercials to the point that there are now two in almost every break. Sometimes you get lucky and end up with two fifteen second spots, but often you're stuck watching two thirty second spots. They also added a commercial that plays before the show even begins, and have started cramming a few more breaks into opportunities in shows that they were passing up before.
It's still far better than watching on cable, but I have no doubt they will be right up to the same level of commercials eventually.
A quick FCC search shows that the station he refers to is in fact transmitting on channel 6. Having a local station that is also in the VHF-Lo band, I can attest to how utterly worthless it is for digital.
And channels 14-20(?) are reserved for land mobile.
Nope. There's a broadcast station near me that had analog on 17 and digital on 16. Analog is of course now gone, but the digital channel hasn't moved from it's assignment. Where my parents live there's a digital channel on 15. And yes, those are all really the channel assignments, not just keeping the old branding.
A quick search suggests that those land mobile assignments apply only to a list of 13 metropolitan areas. I don't get why the FCC hasn't given those guys the boot and let broadcasters take those frequencies. Those frequencies are just part of the Business Radio Pool, and there's plenty of other frequencies available, even in the 400MHz range. Hell, in recent history they've forced relocations for services far more important than that.
News flash - use Boost CDMA and you are using Sprint
Bullshit.
Boost uses Sprint, but gets none of Sprint's roaming agreements with other providers. That's a HUGE change to coverage. Those roaming agreements are the only reason Sprint has good coverage. Take away the ability to use those Verizon towers and your only hope is that you are one of the lucky few that live within range of a Sprint tower.
People aren't talking backwards, you've just never been in a situation where it is not natural to steer into the skid. I'm guessing from your description you were doing something like turning at an intersection where speeds are low and so is the distance covered. Take a right turn from a stop sign for example. In that situation, the perception is more that your car has turned too far, and you're now pointed at the curb instead of down the street. So you naturally turn left to point yourself back down the street.
Now imagine a snowy rural highway with a 90 degree curve to the right. It's a fairly broad curve, and banked a bit so you can maintain 55 through it. You hit an icy patch and start to slide. Yes, your car will be pointed too far to the right, but since you were going 55 mph this time your rear wheels aren't just going to rotate around the front. Your vehicle is going to slide up into the opposite lane. As you see yourself moving into the wrong lane, the natural reaction is to steer to the right even more to get back into the right lane. It can be pretty damn hard to do the correct thing and steer left, especially if the shoulder is coming up at you quickly.
the HDs too small if you're storing TV and Films
They have this great thing called file sharing that takes care of that. Works great for my older mini that I'm using as a HTPC. Just avoid the POS that is Quicktime and even HD over wireless isn't a problem.
I believe what you posted is only a portion of the exploit. There are two test links provided later, using two different methods to try to launch calc. Did you try those links? Both worked for me, so I'm already looking into disabling it on our work machines.