In February of 2003, the FCC modified Part 22 of its rule that covers cellular telephones and other
services. Among the rule changes adopted by the commission is the amendment of sections 22.901 and
22.933, governing support of AMPS. These documents can be found at http://www.fcc.gov/. In effect,
the ruling states that cellular carriers must provide analog service compatible with the AMPS specification
for at least the next 5 years. The FCC has provided no changes that would allow carriers to degrade the
quality of service during this period. At the end of this period, carriers may choose to no longer support
analog service. The FCC will review the effects of this ruling at the end of the third and fourth years.
Based on the outcome of these reviews, the FCC may extend the analog services requirement beyond
the five years.
There are outstanding issues with hearing aid compatibility and other equipment that is dependent on AMPS.
A single GSM channel is about 180 kHz wide. If you mixed it down to a 90 kHz IF, which is probably unrealistic, you would need an ADC that could sample at better than 360 kHz. Now you need a DSP, or CPU, with enough horsepower to do something useful with the data. That's a new sample every 2.7 microseconds. How many simultaneous channels are supported by a typical GSM base station?
They didn't have RAM chips back in the "way back time". There were serial delay line memories and core planes. With magnetic core, the address was decoded to select a specific row and column in a set of core planes. Binary addressing wasn't universal. Some older equipment used decimal (BCD) for addresses and data. The IBM 1620 came with 20,000, 40,000, or 60,000 "digits" of core. It had a 5-digit address bus.
This doesn't appear to be the same thing as a software defined radio, where almost all of the analog circuitry (LOs, mixers, IFs, demodulators) is replaced with a DSP and software. You need some very fast DSPs and ADCs to do that. You might be able to use a PC to process a demodulated GSM channel.
If we really wanted to do this correctly, we would designate the bit as the fundamental unit of information. No more bytes, or more properly, octets. The 8-bit byte has been dominant since the introduction of the IBM System/360, but it is an artificial and temporary convention. The prefixes should be the SI prefixes, not the non-standard powers of 2 that are currently used.
1 kilobyte = 8.192 kb or 8192 b (8 * 2^10)
1 megabyte = 8.389 Mb or 8388608 b (8 * 2^20)
1 gigabyte = 8.590 Gb or 8589934592 b (8 * 2^30)
A 120 GB hard drive would become a 960 Gb hard drive.
Any foreign telemarketing company has a weak point, getting paid by a customer in the USA. The federal government and the credit card companies can block much of the money that flows from the USA to the companies in question.
I'll be damned if I am going to patronize any bar or tavern that pats me down, searches me with a metal detector, takes my picture, or makes a copy of my ID.
They have the right to ask for proof of age if the customer might be underage. Anything else is none of their damn business.
I've heard of something similar involving copying machine and laser printer supplies. The Federal Trade Commission has a good web page that describes the scam and its variations.
I'm a technical type and I got burned by this. I bought a new ink-jet printer which said "USB 2.0 Full Speed" on the outside of the box. I started looking for a cheap USB 2.0 PCI card so that I could dump bits to the printer at 400 Mbps.
I didn't realize that "Full Speed" meant 12 Mbps.
Do you know why I was fooled? It was because I had been reading Intel propaganda on USB 2.0 for many months. Every paper on USB 2.0 touted its blazing speed, allegedly making it the equal of Firewire. They didn't say anything about "Low Speed", "Full Speed" and "High Speed". They just said that it was backwards compatible with USB 1.1 and that new hubs were needed for 480 Mbps operation. In my brain, "USB 2.0" was firmly associated with "480 Mbps".
It wasn't directed at you, it was a preemptive response to the common argument that the problem isn't the tool, it's the craftsman. Don't take it personally.
For decades, "inefficiency" has been the excuse that programmers have used to justify a multitude of sins. Now that computers are thousands of times faster, it is still used to justify unsafe design and implementation decisions. Improvements in compiler technology have reduced the speed penalty for error checking, but that hasn't stopped people from implementing new systems in unsafe languages.
Don't tell me that leet programmers don't make those stupid mistakes, only idiots. Even if you are God's gift to software engineering, that doesn't change the fact that most programmers are not that good, and time and schedule pressures often make things worse.
The BATF has no sense of humor. They have a long history of harassing, arresting and prosecuting people for "minor" violations of the law. You could end up the subject of a search warrant, your house torn apart, and facing felony charges in a federal court.
There are many services and protocols on the Internet that have nothing to do with web browsing. Adding wildcards screws up the DNS for all services and protocols, not just http and smtp.
That may be the law but I get lots of calls that consist of a recorded message trying to sell me satellite TV, "free" trips to DisneyWorld and other tripe. The problem with filing a lawsuit is how do you identify the company that is violating the law. They don't show up on caller ID and they never mention the name of the company.
They can eat the expense. They may not have the ability to set prices in their market. They would like to raise prices but it may not be a realistic option.
Bullshit. Have you bothered to look at the actual numbers?
About half of the federal budget goes to Social Security, Medicare, Medicaid and other entitlement programs. Then add on a healthy chunk for interest on the debt.
Do you have provincial regulatory commissions in Canada? If the telephone company is not being cooperative, try filing a formal complaint with your provincial (state in the US) regulatory commission. Utility companies hate formal complaints. They have to respond to the regulatory commission and the whole thing is on the public record.
How about a tax on electrical power distribution? It would be proportional to the distance between the generating facility and the consumer. This would make it cost effective to invest in local generating capacity.
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A single GSM channel is about 180 kHz wide. If you mixed it down to a 90 kHz IF, which is probably unrealistic, you would need an ADC that could sample at better than 360 kHz. Now you need a DSP, or CPU, with enough horsepower to do something useful with the data. That's a new sample every 2.7 microseconds. How many simultaneous channels are supported by a typical GSM base station?
They didn't have RAM chips back in the "way back time". There were serial delay line memories and core planes. With magnetic core, the address was decoded to select a specific row and column in a set of core planes. Binary addressing wasn't universal. Some older equipment used decimal (BCD) for addresses and data. The IBM 1620 came with 20,000, 40,000, or 60,000 "digits" of core. It had a 5-digit address bus.
This doesn't appear to be the same thing as a software defined radio, where almost all of the analog circuitry (LOs, mixers, IFs, demodulators) is replaced with a DSP and software. You need some very fast DSPs and ADCs to do that. You might be able to use a PC to process a demodulated GSM channel.
1 kilobyte = 8.192 kb or 8192 b (8 * 2^10)
1 megabyte = 8.389 Mb or 8388608 b (8 * 2^20)
1 gigabyte = 8.590 Gb or 8589934592 b (8 * 2^30)
A 120 GB hard drive would become a 960 Gb hard drive.
Any foreign telemarketing company has a weak point, getting paid by a customer in the USA. The federal government and the credit card companies can block much of the money that flows from the USA to the companies in question.
They have the right to ask for proof of age if the customer might be underage. Anything else is none of their damn business.
He hasn't nuked Pakistan, yet.
I've heard of something similar involving copying machine and laser printer supplies. The Federal Trade Commission has a good web page that describes the scam and its variations.
Do you know why I was fooled? It was because I had been reading Intel propaganda on USB 2.0 for many months. Every paper on USB 2.0 touted its blazing speed, allegedly making it the equal of Firewire. They didn't say anything about "Low Speed", "Full Speed" and "High Speed". They just said that it was backwards compatible with USB 1.1 and that new hubs were needed for 480 Mbps operation. In my brain, "USB 2.0" was firmly associated with "480 Mbps".
It wasn't directed at you, it was a preemptive response to the common argument that the problem isn't the tool, it's the craftsman. Don't take it personally.
Don't tell me that leet programmers don't make those stupid mistakes, only idiots. Even if you are God's gift to software engineering, that doesn't change the fact that most programmers are not that good, and time and schedule pressures often make things worse.
The BATF has no sense of humor. They have a long history of harassing, arresting and prosecuting people for "minor" violations of the law. You could end up the subject of a search warrant, your house torn apart, and facing felony charges in a federal court.
There are many services and protocols on the Internet that have nothing to do with web browsing. Adding wildcards screws up the DNS for all services and protocols, not just http and smtp.
That may be the law but I get lots of calls that consist of a recorded message trying to sell me satellite TV, "free" trips to DisneyWorld and other tripe. The problem with filing a lawsuit is how do you identify the company that is violating the law. They don't show up on caller ID and they never mention the name of the company.
See Mordechai Milgrom's modified Newtonian dynamics for an alternate explanation .
They can eat the expense. They may not have the ability to set prices in their market. They would like to raise prices but it may not be a realistic option.
About half of the federal budget goes to Social Security, Medicare, Medicaid and other entitlement programs. Then add on a healthy chunk for interest on the debt.
There is not a one-to-one correspondence between ZIP codes and taxing jurisdictions. It's a really ugly problem to solve.
You should understand what the word means before you accuse someone of plagiarism.
Do you have provincial regulatory commissions in Canada? If the telephone company is not being cooperative, try filing a formal complaint with your provincial (state in the US) regulatory commission. Utility companies hate formal complaints. They have to respond to the regulatory commission and the whole thing is on the public record.
I'd like to see one of the lucky winners try to get on an airplane with a specially modified can in their carry-on baggage. She's got a bomb!
See Minimizing failures in electronic systems by design for an overview of the subject.
Why not just shoot the stockholders and confiscate their estates?
How about a tax on electrical power distribution? It would be proportional to the distance between the generating facility and the consumer. This would make it cost effective to invest in local generating capacity.