Actually, there is some insurance via FDIC passthrough insurance, described here. Note this only applies if you keep a balance in your PayPal account, and do not choose to use their money market option.
This does assume that PayPal keeps accurate records so the FDIC can determine who owns what in the account. It also assumes that it is a FDIC-insured bank that fails, and not PayPal becoming insolvent. If PayPal goes under, they presume their user agreement protects users' money. See the above link for details.
Looking at their schedule, it is unclear what actually happened. Note that on 25 September 2004 they made their initial contact, but on 22 October 2004 they say they sent a second round of vulnerabilities in, followed by a set of patches on 27 October. The developers would then have to take all these patches, compare it to anything they may have come up with in the meantime, and make sure they didn't break anything else.
The public disclosure occured 17 November 2004, about 20 days later, after about a week's worth of testing time as 2.4.28-rc3. Personally, I would not have liked them to have announced on the first set of vulnerabilities if there was some knowledge between October and November that more issues were being found. Otherwise everyone and their kin would be combing the code looking for any issues missed in smbfs.
But my Tungsten C came with a version of Documents to Go (not the super duper latest, but usable enough for my purposes), making it effectively a non-cost addon when I purchased my Palm Pilot. It was included in the same box.
Granted they keep bugging me to register and purchase the latest, but so does any version of Quicken as well as many of the applications preloaded on PC's nowadays.
Home distribution to the end user in the US is 240 V single phase, which is actually is two pairs of a three phase system. This is then split into two 120 V circuits in the home by a step down transformer. Large businesses may have full three-phase feeds at somewhat higher voltages (typically up to 500-1200 V), and often get rate discounts if they "load balance" their impedance as seen by the electric company connection to match the feed source for maximum throughput, or if they agree to scale back their usage during an energy crunch.
Distribution in both the US and Europe above the street level is done well above 240 Volts. Use your favorite search engine to lookup "power distribution" or read more about it here.
You probably should clarify: Legal bodies (states/towns/counties) must make "reasonable accomodation" according to PRB-1 and various state equivalent pieces of legislation.
However, the federal level PRB-1 does not cover covenents, as the FCC was hesistant to rule on the matter. I do not recall if any of the state level ones attempt to do so. I have not seen a discussion on what the FCC said about renting, although I presume that falls in a simialar category.
The Amateur Radio Relay League has a lot of material on this subject, including copies of the federal and state laws.
I left a comfortable job position to try for a Ph.D. at a major US institution. I was offered a full stipend, and it paid for pretty much everything except car insurance and clothing costs.
Unfortunately, when I got there, I found myself outclassed, and without help. Once my advisor came to realize I was not a specialist in the areas he thought I was, he rarely saw me, while discouraging me to look elsewhere.
Finally, my advisor dumped me two months before my contract with him was due to expire, well after the point all the other Ph.D. advisors had already chosen their underlings for the next year. I later found one of my friends in that research group was originally under my advisor as well, and had been dumped just prior to this advisor taking me in.
But it was too late for me. I lost a large amount of personal funding taking out loans to pay for the next two quarters. The politics in the Engineering department there were much worse than those I ever encountered working for the US government. Eventually I received a very good job offer from a private firm, and dropped out with the Masters degree I already had received at another school. But by that point in time, I estimated I wasted well over $10,000 in my own funds waiting for a new advisor I liked to take me in (it is worth noting he did come up with some funds for me, but I left just after this point).
The paranoid should look at two professors' testimony before the US Congress for some insight. The first is the testimony of Dr. David Goodstein about how the US Ph.D. program attempts to only breed elite members like themselves. The second is the testimony of Dr. Norman Matloff (revised since 1998) on how there really is not a Software labor shortage in the US (one section of this paper discusses why American CS students tend not to go for Ph.D. degrees).
Actually, the Palestinians have gotten billions of dollars/euros in humanitarian aid, much of which is suspected of actually being diverted to the extremists in their society.
While no one I know of has outright public proof this is happening, one Reuters piece suggests that over $900 million in aid over five years dedicated for humanitarian purposes was not used for that purpose . To be balanced a bit, it is also worth noting that the Israelis might not be considered playing fair in some circles because they charge the Palestinians for security procedures and hampering UN teachers's movements.
Play around with Google or your favorite search engine a bit to find out more; I really do not have the time this morning to go into the details.
While its arguable that PP&B is not the primary cause of textbooks being expensive, it is safe to say that their 33.2 cents per dollar figure for editorial and PP&B likely is correct.
Let's run some numbers using the figures you gave above, and assume a small, 1,000 book print run:
$20,000 Editorial
(1) 1,000 Book Print Run (it's a niche subject, and a new edition is going come out in two years)
$4.50 Paper, Printing, & Binding per book
Dividing the editorial costs across 1,000 books yields an editorial cost of $20 per book. Adding this to PP&B yields a total cost of $24.50, including the author's royalties.
Multiplying by three (since 32.3/100 is about 1/3), we get $73.50, or a price cheaper than many of my engineering textbooks. Therefore, at least by my crude analysis, the "32.3 cents per dollar" figure is justified.
Forget the parody part; some of their older works feature what sounds suspiciously like audio clips from actual Star Trek movies. Either that, or they are very good at mimicing orchestras with circa-1998 equipment (when the older episodes were last remade).
While most of their current episode seems clean, the short music clips used in the earlier episodes alone should be enough to cease and desist them out of existence (if they do not have permission to use them).
While I am not a T-Mobile employee (only a subscriber), I believe this is because mobile phones are capable of receiving special SMS messages to add phone numbers (as well as program the phone, add ringtones, etc.). But to the best of my knowledge, phones are not designed to receive any SMS messages that could cause them to send data other than a confirmation to a third party.
Think of the fun when someone could have if they randomly sent an SMS to get your addressbook, and grabbed the phone numbers of all your family and clients. If someone compromised a carrier's system that could do this, or found an alternative way to get the message through, the carrier at fault likely would never hear the end of it.
While I think some carriers (AT&T?) may willingly let you store entire addressbooks online, T-mobile might be assuming that you will get confused when numbers you add to your phone directly do not immediately appear online. So they take the safe route, and just let you add; IMHO it's better than typing them in on most phones.
---
If there is some carrier that can do this, I would love to know. I'm sorry to hear that you are having issues with their tech support; sadly, that seems to be every company nowadays that you haven't given a small fortune to.
In some cases, black boxes may not accurate. This is why Columbus (Ohio) uses them for corroborative evidience, and not primary evidence. One case cited by a Columbus investigator had the black box reporting the seat belt was off, while eyewitnesses clearly saw it was on. I'd post a link, but slashdot seems to be very anti registration-required lately.
What is interesting with the Quebec case is that they apparently used the black box for primary evidence (since no witnesses were found). And given that the spedometers, etc. found in cars around the black box may be imprecise (and I've seen some oddballs), that is a cause for concern.
Erm, no. The art of overlaying a signal over your home AC line in sync with the zero crossings of an AC signal actually is patented by X10. While you may see other devices out there, they are all either made by X10 and rebranded, or licensed.
X10 the company has a special AC interface box you can by that just sends and receives raw data; the purpose of purchasing this box (as it says) is so you legally license the patents.
For more information, check out the USPTO and at least patents 4200862 and 4638299.
IANAL (nor are probably 99% of the other people commenting), but this may not count as prior art. The important thing about prior art is that it is made up PRIOR to the patent in question. If someone patented the wheel, and I then read the patent (think blueprint) for it, I too could take a hammer, saw, chisel, etc. and scream "Look how obvious this is!"
In this case, if someone can prove they created a similar combination of program(s) prior to October 17, 1994, that would stand a much better chance of invalidating the patent. A mockup done in 2003 likely will not.
No one said amateur radio operators could not use digital modes too. Amateur radio operators have modems that range from 75 baud (or lower) to a full 56kbps.
In any case, the systems you talk about typically are connected to a central location, but over fixed wires. While traffic lights can get away with radio telemetry since they don't have to chat much, there is simply too much data in most video streams to run a few dozen of them over radio links, unless you only have to watch one or two cameras at a time.
The implication here is that CWRU's network is publically accessible. At last check, Drexel's network was *not* publically accessible (MAC locked, IIRC).
Of course, things may have changed and I could be wrong...
It is interesting to see CWRU do this, as Ohio State likely would never dare try this. At Ohio State, all systems connected to the network must authenticate their users. If a system is unable to do so, the network switches typically force users onto a logon server in order to verify whom they are.
This is a result of OSU's network policy (PDF file - see item #13). There are a few exceptions, but for the most part this is true.
OSU's wireless 802.11 service requires users to login, and pay for some sort of dialup plan. Even the $1.95/month one counts.
Not only that, but I would think that much of the power savings gained by would be lost due to the fact that you had to have a computer on all the time. Yes, you may be able to lower per customer usage by 500 W or when you need to. But you are bringing more computers onto the grid, and those computers have to be on 24/7. This increased demand multiplied by every household in an area may cause forced cutbacks to start earlier and last longer.
The only semi-economic way I see to do this is if you put the software inside of an DSL/Cable/etc. Internet router box. The router box I have uses only 30 Watts as compared to the 350 W supply inside my computer.
(For some reason I recall hearing that currently unused appliances and currently unused power supplies take up 2% of all electricity usage. But I cannot find a source to confirm this.)
Yes, there may be false positives/negatives. No machine I know of (and I've heard stories about several) can perfectly predict when someone is going to have a heart attack. There simply are too many variables and too many different varients and types of irregularities for a "one size fits all solution".
As long as the machine passes the ECG it sees to the doctor there should be no problems. If there is a cause for concern in the relayed data, the doctor can talk to the patient via other (non-PDA) means.
Probe disconnection should be easy to detect. Your skin has an electrical resistance much lower than an air gap.
While human skin resistance is normally in the megaohms, a properly designed device should be able to detect this. Any decent digital multimeter which can read 20+ Megaohms likely can verify this (DMMs use low current, but I do *not* vouch for the safety of this procedure!).
Note IANAMD. Though I hope to be a Ph. D. someday:)
That's an interesting state you've got there. Georgia and a few other states (IIRC) suspend your drivers license if you go driving off, although with varying levels of prosecution. Maryland is among the states considering this (although since Feburary that may have changed).
So instead of charging $30 more, they suspended someone's driver license for being a bit absentminded, would you consider that a fair deal?
(The one that always gets me is when my state sends their "random" insurance check letters via first class mail. If you fail to reply to one, you lose your license, but is there any guarantee that you received it in the first place? Other states do similar things...)
Packet radio is extremely routable. TCP/IP is one way we do it, but actually is not the most common method.
As another poster pointed out, amateur radio operators mainly use AX.25. Both TCP/IP and AX.25 are X.25 derivatines. AX.25 identifiers are Amateur Radio callsigns with numeric suffixes (such as "N0CALL-10"). AX.25 routing is done by broadcasting while gradually incrementing your TTL until someone hears them for you (if they aren't your immediate neighbor), or manually entered information (either as a route table or "Connect to SOME1 via SOME2, SOME3, SOME4").
There are also a few other ways (such as NETROM and ROSE) amateur radio operators can route information digitally. While it would be a stretch, NETROM could be considered our equivalent of BGP router advertising and periodic route annoucements. ROSE is a polled system similar to Token Ring.
Actually, the ball is in the opposite court. The FCC already has said that the Amateurs have the right to use their frequencies. The broadband powerline companies have to prove that they can safely do the same without disturbing other occupants.
What is going on IIRC is that Amateur Radio operators presently have licensed permission to operate using certain modes on certain frequencies. The power companies could do power over broadband without getting licensed, but they would have to do so at lower power (less distance) and as a unlicensed operation (i.e. if any licensed operator complained, they would have to fix their problem or cease operations).
What the power companies are trying to do is also get licensed permission, possibly on a higher basis of license than the Amateur Radio operators do. If they get a higher priority of license than the Amateur Radio operators, the Amateur Radio operators have to eat whatever the power lines put out.
The problem is that the power distribution system presently uses unshielded cables which radiate noise everywhere. Drive around town listening to the AM band if you don't believe me. In extreme cases and with certain devices (like transformers), the power company has to be called out to fix their interfering noise. This could be seen as an excuse to avoid doing so.
(I also seem to recall that DOCSIS cable modems skipped the ham bands to avoid interference going either way, but I do not recall which IEEE magazine and issue I have that states this; sorry.)
Slashdot Mirror
Actually, there is some insurance via FDIC passthrough insurance, described here. Note this only applies if you keep a balance in your PayPal account, and do not choose to use their money market option.
This does assume that PayPal keeps accurate records so the FDIC can determine who owns what in the account. It also assumes that it is a FDIC-insured bank that fails, and not PayPal becoming insolvent. If PayPal goes under, they presume their user agreement protects users' money. See the above link for details.
Looking at their schedule, it is unclear what actually happened. Note that on 25 September 2004 they made their initial contact, but on 22 October 2004 they say they sent a second round of vulnerabilities in, followed by a set of patches on 27 October. The developers would then have to take all these patches, compare it to anything they may have come up with in the meantime, and make sure they didn't break anything else.
The public disclosure occured 17 November 2004, about 20 days later, after about a week's worth of testing time as 2.4.28-rc3. Personally, I would not have liked them to have announced on the first set of vulnerabilities if there was some knowledge between October and November that more issues were being found. Otherwise everyone and their kin would be combing the code looking for any issues missed in smbfs.
But my Tungsten C came with a version of Documents to Go (not the super duper latest, but usable enough for my purposes), making it effectively a non-cost addon when I purchased my Palm Pilot. It was included in the same box.
Granted they keep bugging me to register and purchase the latest, but so does any version of Quicken as well as many of the applications preloaded on PC's nowadays.
Home distribution to the end user in the US is 240 V single phase, which is actually is two pairs of a three phase system. This is then split into two 120 V circuits in the home by a step down transformer. Large businesses may have full three-phase feeds at somewhat higher voltages (typically up to 500-1200 V), and often get rate discounts if they "load balance" their impedance as seen by the electric company connection to match the feed source for maximum throughput, or if they agree to scale back their usage during an energy crunch.
Distribution in both the US and Europe above the street level is done well above 240 Volts. Use your favorite search engine to lookup "power distribution" or read more about it here.
You probably should clarify: Legal bodies (states/towns/counties) must make "reasonable accomodation" according to PRB-1 and various state equivalent pieces of legislation.
However, the federal level PRB-1 does not cover covenents, as the FCC was hesistant to rule on the matter. I do not recall if any of the state level ones attempt to do so. I have not seen a discussion on what the FCC said about renting, although I presume that falls in a simialar category.
The Amateur Radio Relay League has a lot of material on this subject, including copies of the federal and state laws.
I left a comfortable job position to try for a Ph.D. at a major US institution. I was offered a full stipend, and it paid for pretty much everything except car insurance and clothing costs.
Unfortunately, when I got there, I found myself outclassed, and without help. Once my advisor came to realize I was not a specialist in the areas he thought I was, he rarely saw me, while discouraging me to look elsewhere.
Finally, my advisor dumped me two months before my contract with him was due to expire, well after the point all the other Ph.D. advisors had already chosen their underlings for the next year. I later found one of my friends in that research group was originally under my advisor as well, and had been dumped just prior to this advisor taking me in.
But it was too late for me. I lost a large amount of personal funding taking out loans to pay for the next two quarters. The politics in the Engineering department there were much worse than those I ever encountered working for the US government. Eventually I received a very good job offer from a private firm, and dropped out with the Masters degree I already had received at another school. But by that point in time, I estimated I wasted well over $10,000 in my own funds waiting for a new advisor I liked to take me in (it is worth noting he did come up with some funds for me, but I left just after this point).
The paranoid should look at two professors' testimony before the US Congress for some insight. The first is the testimony of Dr. David Goodstein about how the US Ph.D. program attempts to only breed elite members like themselves. The second is the testimony of Dr. Norman Matloff (revised since 1998) on how there really is not a Software labor shortage in the US (one section of this paper discusses why American CS students tend not to go for Ph.D. degrees).
It's likely HP has considered this given their press release on how HP Helps the US Clamp Down on Counterfeiting as covered in this Slashdot story.
Actually, the Palestinians have gotten billions of dollars/euros in humanitarian aid, much of which is suspected of actually being diverted to the extremists in their society.
While no one I know of has outright public proof this is happening, one Reuters piece suggests that over $900 million in aid over five years dedicated for humanitarian purposes was not used for that purpose . To be balanced a bit, it is also worth noting that the Israelis might not be considered playing fair in some circles because they charge the Palestinians for security procedures and hampering UN teachers's movements.
Play around with Google or your favorite search engine a bit to find out more; I really do not have the time this morning to go into the details.
Indeed. One can say that slashdot has been infected by a polymorphic, duplicate comment virus. It even changes paragraph sizes!
In fact, this virus includes signatures from several other slashdot viruses, also known as "posts", in order to evade easy detection.
Note the +4, karma-whoring yet randomly worded subject line. With practice, you should be able to use this to spot similar viruses in the future.
While its arguable that PP&B is not the primary cause of textbooks being expensive, it is safe to say that their 33.2 cents per dollar figure for editorial and PP&B likely is correct.
Let's run some numbers using the figures you gave above, and assume a small, 1,000 book print run:
Dividing the editorial costs across 1,000 books yields an editorial cost of $20 per book. Adding this to PP&B yields a total cost of $24.50, including the author's royalties.
Multiplying by three (since 32.3/100 is about 1/3), we get $73.50, or a price cheaper than many of my engineering textbooks. Therefore, at least by my crude analysis, the "32.3 cents per dollar" figure is justified.
Forget the parody part; some of their older works feature what sounds suspiciously like audio clips from actual Star Trek movies. Either that, or they are very good at mimicing orchestras with circa-1998 equipment (when the older episodes were last remade).
While most of their current episode seems clean, the short music clips used in the earlier episodes alone should be enough to cease and desist them out of existence (if they do not have permission to use them).
While I am not a T-Mobile employee (only a subscriber), I believe this is because mobile phones are capable of receiving special SMS messages to add phone numbers (as well as program the phone, add ringtones, etc.). But to the best of my knowledge, phones are not designed to receive any SMS messages that could cause them to send data other than a confirmation to a third party.
Think of the fun when someone could have if they randomly sent an SMS to get your addressbook, and grabbed the phone numbers of all your family and clients. If someone compromised a carrier's system that could do this, or found an alternative way to get the message through, the carrier at fault likely would never hear the end of it.
While I think some carriers (AT&T?) may willingly let you store entire addressbooks online, T-mobile might be assuming that you will get confused when numbers you add to your phone directly do not immediately appear online. So they take the safe route, and just let you add; IMHO it's better than typing them in on most phones.
---
If there is some carrier that can do this, I would love to know. I'm sorry to hear that you are having issues with their tech support; sadly, that seems to be every company nowadays that you haven't given a small fortune to.
In some cases, black boxes may not accurate. This is why Columbus (Ohio) uses them for corroborative evidience, and not primary evidence. One case cited by a Columbus investigator had the black box reporting the seat belt was off, while eyewitnesses clearly saw it was on. I'd post a link, but slashdot seems to be very anti registration-required lately.
What is interesting with the Quebec case is that they apparently used the black box for primary evidence (since no witnesses were found). And given that the spedometers, etc. found in cars around the black box may be imprecise (and I've seen some oddballs), that is a cause for concern.
Erm, no. The art of overlaying a signal over your home AC line in sync with the zero crossings of an AC signal actually is patented by X10. While you may see other devices out there, they are all either made by X10 and rebranded, or licensed.
X10 the company has a special AC interface box you can by that just sends and receives raw data; the purpose of purchasing this box (as it says) is so you legally license the patents.
For more information, check out the USPTO and at least patents 4200862 and 4638299.
Not to beat a dead horse, but if Excel was prior art, I would have hoped that Microsoft themselves would have brought it up.
IANAL (nor are probably 99% of the other people commenting), but this may not count as prior art. The important thing about prior art is that it is made up PRIOR to the patent in question. If someone patented the wheel, and I then read the patent (think blueprint) for it, I too could take a hammer, saw, chisel, etc. and scream "Look how obvious this is!"
In this case, if someone can prove they created a similar combination of program(s) prior to October 17, 1994, that would stand a much better chance of invalidating the patent. A mockup done in 2003 likely will not.
No one said amateur radio operators could not use digital modes too. Amateur radio operators have modems that range from 75 baud (or lower) to a full 56kbps.
In any case, the systems you talk about typically are connected to a central location, but over fixed wires. While traffic lights can get away with radio telemetry since they don't have to chat much, there is simply too much data in most video streams to run a few dozen of them over radio links, unless you only have to watch one or two cameras at a time.
The implication here is that CWRU's network is publically accessible. At last check, Drexel's network was *not* publically accessible (MAC locked, IIRC).
Of course, things may have changed and I could be wrong...
It is interesting to see CWRU do this, as Ohio State likely would never dare try this. At Ohio State, all systems connected to the network must authenticate their users. If a system is unable to do so, the network switches typically force users onto a logon server in order to verify whom they are.
This is a result of OSU's network policy (PDF file - see item #13). There are a few exceptions, but for the most part this is true.
OSU's wireless 802.11 service requires users to login, and pay for some sort of dialup plan. Even the $1.95/month one counts.
Not to brag, but I submitted this story to slashdot three years ago.
Dell has been doing this for quite some time.
Not only that, but I would think that much of the power savings gained by would be lost due to the fact that you had to have a computer on all the time. Yes, you may be able to lower per customer usage by 500 W or when you need to. But you are bringing more computers onto the grid, and those computers have to be on 24/7. This increased demand multiplied by every household in an area may cause forced cutbacks to start earlier and last longer.
The only semi-economic way I see to do this is if you put the software inside of an DSL/Cable/etc. Internet router box. The router box I have uses only 30 Watts as compared to the 350 W supply inside my computer.
(For some reason I recall hearing that currently unused appliances and currently unused power supplies take up 2% of all electricity usage. But I cannot find a source to confirm this.)
Yes, there may be false positives/negatives. No machine I know of (and I've heard stories about several) can perfectly predict when someone is going to have a heart attack. There simply are too many variables and too many different varients and types of irregularities for a "one size fits all solution".
As long as the machine passes the ECG it sees to the doctor there should be no problems. If there is a cause for concern in the relayed data, the doctor can talk to the patient via other (non-PDA) means.
Probe disconnection should be easy to detect. Your skin has an electrical resistance much lower than an air gap. While human skin resistance is normally in the megaohms, a properly designed device should be able to detect this. Any decent digital multimeter which can read 20+ Megaohms likely can verify this (DMMs use low current, but I do *not* vouch for the safety of this procedure!).
Note IANAMD. Though I hope to be a Ph. D. someday :)
That's an interesting state you've got there. Georgia and a few other states (IIRC) suspend your drivers license if you go driving off, although with varying levels of prosecution. Maryland is among the states considering this (although since Feburary that may have changed).
So instead of charging $30 more, they suspended someone's driver license for being a bit absentminded, would you consider that a fair deal?
(The one that always gets me is when my state sends their "random" insurance check letters via first class mail. If you fail to reply to one, you lose your license, but is there any guarantee that you received it in the first place? Other states do similar things...)
Packet radio is extremely routable. TCP/IP is one way we do it, but actually is not the most common method.
As another poster pointed out, amateur radio operators mainly use AX.25. Both TCP/IP and AX.25 are X.25 derivatines. AX.25 identifiers are Amateur Radio callsigns with numeric suffixes (such as "N0CALL-10"). AX.25 routing is done by broadcasting while gradually incrementing your TTL until someone hears them for you (if they aren't your immediate neighbor), or manually entered information (either as a route table or "Connect to SOME1 via SOME2, SOME3, SOME4").
There are also a few other ways (such as NETROM and ROSE) amateur radio operators can route information digitally. While it would be a stretch, NETROM could be considered our equivalent of BGP router advertising and periodic route annoucements. ROSE is a polled system similar to Token Ring.
We also have our share of propritary speedup techniques (such as KA-NODE from Kantronics) and experiemental protocols as well.
Actually, the ball is in the opposite court. The FCC already has said that the Amateurs have the right to use their frequencies. The broadband powerline companies have to prove that they can safely do the same without disturbing other occupants.
What is going on IIRC is that Amateur Radio operators presently have licensed permission to operate using certain modes on certain frequencies. The power companies could do power over broadband without getting licensed, but they would have to do so at lower power (less distance) and as a unlicensed operation (i.e. if any licensed operator complained, they would have to fix their problem or cease operations).
What the power companies are trying to do is also get licensed permission, possibly on a higher basis of license than the Amateur Radio operators do. If they get a higher priority of license than the Amateur Radio operators, the Amateur Radio operators have to eat whatever the power lines put out.
The problem is that the power distribution system presently uses unshielded cables which radiate noise everywhere. Drive around town listening to the AM band if you don't believe me. In extreme cases and with certain devices (like transformers), the power company has to be called out to fix their interfering noise. This could be seen as an excuse to avoid doing so.
(I also seem to recall that DOCSIS cable modems skipped the ham bands to avoid interference going either way, but I do not recall which IEEE magazine and issue I have that states this; sorry.)