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jason wrote:
Hello, No one on here seems capable of saying exactly what the problem is. I don't want to read long boring rambling emails! Just say what's wrong in a few lines in your own words without pointing towards websites. BPL comes into your house at the power company service box. Even if you don not connect to it. It creates S9++ signals from 2 to 80 MHz. You can't hear anything on your new 10,000 dollar ICOM 7800 or any other radio except 'Data Hash'. Is that clear enough?? |
BPL comes into your house at the power company service box. Even if you
don not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? It creates S9++ signals from 2 to 80 MHz. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. Otherwise, there are some, few, circumstances in which an unacceptabel (pun and sic intended) level of 'hash' will arise in that passband to the annoyance of some hams. Based on assumption, the number of hams affected nation wide is in the hundreds. For comparison, the number of hams affected by tower erection restrictions is in the tens of thousands. You can't hear anything on your new 10,000 dollar ICOM 7800 or any other radio except 'Data Hash'. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. Is that clear enough?? FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. FACT: The press has used this exchange, in many circumstances, to view us with the jaundiced eye of being anti-technology and very out of date. Why is it that they just don't see it as reason to 'kill BPL'? God Bless, Chip N1IR |
BPL comes into your house at the power company service box. Even if you
don not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? It creates S9++ signals from 2 to 80 MHz. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. Otherwise, there are some, few, circumstances in which an unacceptabel (pun and sic intended) level of 'hash' will arise in that passband to the annoyance of some hams. Based on assumption, the number of hams affected nation wide is in the hundreds. For comparison, the number of hams affected by tower erection restrictions is in the tens of thousands. You can't hear anything on your new 10,000 dollar ICOM 7800 or any other radio except 'Data Hash'. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. Is that clear enough?? FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. FACT: The press has used this exchange, in many circumstances, to view us with the jaundiced eye of being anti-technology and very out of date. Why is it that they just don't see it as reason to 'kill BPL'? God Bless, Chip N1IR |
BPL comes into your house at the power company service box. Even if you don
not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? Umm..."rf propagation"?? I thought you designed antennas...you don't know THIS? It creates S9++ signals from 2 to 80 MHz. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. Otherwise, there are some, few, circumstances in which an unacceptabel (pun and sic intended) level of 'hash' Hmmm...ok, this is for "rural internet access." "Looking out the window, what do I see? A POWER POLE!!" Oh, 50ft away or so from the house. Hmmm...BPL at 50ft....??!!?? (Oh, and the car is a T5 Volvo...5 spd manual, of course...no stickers...just speed & style) Based on assumption, the number of hams affected nation wide is in the hundreds. Of thousands? Last time I checked, most houses had powerlines SOMEWHERE in the general vicinity. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. See above. Ever tried to get the bloody power companies to fix an arcing insulator?? FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. Hmm...Germany and Japan are a "vocal minority?" Both tried it, and discarded it due to interference. THAT "fixed it," but good. WLAN (mebbe 5.6 ghz or so? W/a cable feed?) is a good idea, tho. PLC is not. Duke Power (Duke Energy) is working on some trials.....I unwittingly drove thru one neighborhood w/PLC and later realized that I had done so....interference ranges from S5 to S9+ on my mobile. The houses are not much farther away from the PL than my mobile. Empirical data says that interference would be present there, also. I had shut off the mobile as I wished to save my ears. Thought something had started arcing nearby. Heh...and just wait 'til the sunspot cycle starts back upwards.... A |
BPL comes into your house at the power company service box. Even if you don
not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? Umm..."rf propagation"?? I thought you designed antennas...you don't know THIS? It creates S9++ signals from 2 to 80 MHz. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. Otherwise, there are some, few, circumstances in which an unacceptabel (pun and sic intended) level of 'hash' Hmmm...ok, this is for "rural internet access." "Looking out the window, what do I see? A POWER POLE!!" Oh, 50ft away or so from the house. Hmmm...BPL at 50ft....??!!?? (Oh, and the car is a T5 Volvo...5 spd manual, of course...no stickers...just speed & style) Based on assumption, the number of hams affected nation wide is in the hundreds. Of thousands? Last time I checked, most houses had powerlines SOMEWHERE in the general vicinity. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. See above. Ever tried to get the bloody power companies to fix an arcing insulator?? FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. Hmm...Germany and Japan are a "vocal minority?" Both tried it, and discarded it due to interference. THAT "fixed it," but good. WLAN (mebbe 5.6 ghz or so? W/a cable feed?) is a good idea, tho. PLC is not. Duke Power (Duke Energy) is working on some trials.....I unwittingly drove thru one neighborhood w/PLC and later realized that I had done so....interference ranges from S5 to S9+ on my mobile. The houses are not much farther away from the PL than my mobile. Empirical data says that interference would be present there, also. I had shut off the mobile as I wished to save my ears. Thought something had started arcing nearby. Heh...and just wait 'til the sunspot cycle starts back upwards.... A |
"Fractenna" wrote in message
... BPL comes into your house at the power company service box. Even if you don not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? It is true that at least one (proprietary - they're all proprietary) implementation of BPL forgoes the issues associated with coupling around the transformer that steps the MV distribution down to 220 VAC for the feed to the house by using 802.11b to link from a distribution point (essentially an 802.11b access point) to the computers in nearby houses. However ... It creates S9++ signals from 2 to 80 MHz. Even the "flavor" that uses 802.11b to get from the pole to your house radiates a LOT of interference in the HF/low VHF bands it uses from the (nearby) distribution lines. The "main.net" system operated by PP&L in Emmaus, PA measured -60 dBm (that's S9+13 dB) of interference in a 3 kHz bandwidth, using an "Outbacker Joey" short whip clamped to the roof rack of my Ford Explorer. That rendered 20m SSB signals in the range of -80 to -100 dBm (which would normally be quite usable) unintelligible. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. Otherwise, there are some, few, circumstances in which an unacceptabel (pun and sic intended) level of 'hash' will arise in that passband to the annoyance of some hams. Based on assumption, the number of hams affected nation wide is in the hundreds. I'm not sure where you come up with the assertion that the number of hams affected is "in the hundreds." Are you referring to the number affected by the current, very limited "trial area" deployments of BPL? If so, the numbers are probably relatively small. HOWEVER, if BPL is deployed more or less ubiquitously, there will be few hams far enough from a power line to not be SERIOUSLY affected. For comparison, the number of hams affected by tower erection restrictions is in the tens of thousands. True, and that's a valid crusade as well, but how does the existence of that problem imply that we should ignore the problem of BPL? (Remember, BPL will not affect just those who want to/can afford to erect towers, but ALL hams that use HF/6m ... even with simple dipoles or verticals.) You can't hear anything on your new 10,000 dollar ICOM 7800 or any other radio except 'Data Hash'. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. Right now, the FCC rules don't require squat other than for the Part 15 device (in this case the BPL system) to shut down unless/until interference can be eliminated. The radiated emission limits for BPL are WAY too high. The "mitigation techniques" that the FCC and the BPL folks pay lip service to are not in place, nor is it at all clear that they will be effective, even if the power companies are responsive (and we've seen how responsive most of them are [not]). Is that clear enough?? Is that clear enough??? FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. I don't see it as a "vocal minority" ... all of the hams I know are concerned that BPL will trash the HF bands and that the FCC and the power companies will do little/nothing about it (the FCC hasn't acted on complaints thusfar ... they've been buried in OET rather than being dealt with in accordance with the existing rules.) If someone could show me a technically sound way that BPL could use the HF spectrum without trashing us, I'd have no problem with it. The problem is that, as it is, it *does* trash us in any area where it's deployed and there is no solution in sight. There is one BPL technology - from a company called "Corridor" - that appears to avoid the problem by not using the HF/low VHF bands ... FACT: The press has used this exchange, in many circumstances, to view us with the jaundiced eye of being anti-technology and very out of date. Why is it that they just don't see it as reason to 'kill BPL'? "The press" feeds on controversy and frequently distorts things - at best in the interest of making the story more "sensational, at the worst because they have taken sides and have their own agenda to promote rather than objectively and dispassionately reporting the facts. Carl - wk3c |
"Fractenna" wrote in message
... BPL comes into your house at the power company service box. Even if you don not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? It is true that at least one (proprietary - they're all proprietary) implementation of BPL forgoes the issues associated with coupling around the transformer that steps the MV distribution down to 220 VAC for the feed to the house by using 802.11b to link from a distribution point (essentially an 802.11b access point) to the computers in nearby houses. However ... It creates S9++ signals from 2 to 80 MHz. Even the "flavor" that uses 802.11b to get from the pole to your house radiates a LOT of interference in the HF/low VHF bands it uses from the (nearby) distribution lines. The "main.net" system operated by PP&L in Emmaus, PA measured -60 dBm (that's S9+13 dB) of interference in a 3 kHz bandwidth, using an "Outbacker Joey" short whip clamped to the roof rack of my Ford Explorer. That rendered 20m SSB signals in the range of -80 to -100 dBm (which would normally be quite usable) unintelligible. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. Otherwise, there are some, few, circumstances in which an unacceptabel (pun and sic intended) level of 'hash' will arise in that passband to the annoyance of some hams. Based on assumption, the number of hams affected nation wide is in the hundreds. I'm not sure where you come up with the assertion that the number of hams affected is "in the hundreds." Are you referring to the number affected by the current, very limited "trial area" deployments of BPL? If so, the numbers are probably relatively small. HOWEVER, if BPL is deployed more or less ubiquitously, there will be few hams far enough from a power line to not be SERIOUSLY affected. For comparison, the number of hams affected by tower erection restrictions is in the tens of thousands. True, and that's a valid crusade as well, but how does the existence of that problem imply that we should ignore the problem of BPL? (Remember, BPL will not affect just those who want to/can afford to erect towers, but ALL hams that use HF/6m ... even with simple dipoles or verticals.) You can't hear anything on your new 10,000 dollar ICOM 7800 or any other radio except 'Data Hash'. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. Right now, the FCC rules don't require squat other than for the Part 15 device (in this case the BPL system) to shut down unless/until interference can be eliminated. The radiated emission limits for BPL are WAY too high. The "mitigation techniques" that the FCC and the BPL folks pay lip service to are not in place, nor is it at all clear that they will be effective, even if the power companies are responsive (and we've seen how responsive most of them are [not]). Is that clear enough?? Is that clear enough??? FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. I don't see it as a "vocal minority" ... all of the hams I know are concerned that BPL will trash the HF bands and that the FCC and the power companies will do little/nothing about it (the FCC hasn't acted on complaints thusfar ... they've been buried in OET rather than being dealt with in accordance with the existing rules.) If someone could show me a technically sound way that BPL could use the HF spectrum without trashing us, I'd have no problem with it. The problem is that, as it is, it *does* trash us in any area where it's deployed and there is no solution in sight. There is one BPL technology - from a company called "Corridor" - that appears to avoid the problem by not using the HF/low VHF bands ... FACT: The press has used this exchange, in many circumstances, to view us with the jaundiced eye of being anti-technology and very out of date. Why is it that they just don't see it as reason to 'kill BPL'? "The press" feeds on controversy and frequently distorts things - at best in the interest of making the story more "sensational, at the worst because they have taken sides and have their own agenda to promote rather than objectively and dispassionately reporting the facts. Carl - wk3c |
On Sun, 27 Jun 2004 11:47:50 +0000, Fractenna wrote:
BPL comes into your house at the power company service box. Even if you don not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? FULL FACT: plugin smart appliances are being promoted. How do they work if the signal does not come into the house. It creates S9++ signals from 2 to 80 MHz. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. FULL FACT: These levels are well documented and allowable within 33M of any power line or household appliance. affected nation wide is in the hundreds. For comparison, the number of hams affected by tower erection restrictions is in the tens of thousands. FULL FACT: I am able to purchase a house where there are no tower restrictions. With BPL, I have no choice except to disconnect from the power grid on a house far from powerlines. Infact, you would need to be a mile from powerlines. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. FULL FACT: So far, none of the hams reported anyone adding filtering and the BPL industry has been unresponsive. Also, I listen to radios in the bands from DC to daylight. I prefer to listen to foreign broadcast along with amateur bands. How would they be able to keep ALL the bands clean? Blocking foreign broadcast in any country is against the international law. Our government must protect these bands from interference. FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. FULL FACT: Once BPL has a foothold, there will be very little chance of having any issues resolved. All the other countries who tried BPL dumped it. FACT: The press has used this exchange, in many circumstances, to view us with the jaundiced eye of being anti-technology and very out of date. Why is it that they just don't see it as reason to 'kill BPL'? FULL FACT: The media is for big business, owned by big business and promotes big business. That is why the press has lost most all it's respect from the people. God Bless, Chip N1IR Chip, don't be so easly fooled! The BPL industry only has one goal in mind, to make money. Radio enthusiast are their enemy. |
On Sun, 27 Jun 2004 11:47:50 +0000, Fractenna wrote:
BPL comes into your house at the power company service box. Even if you don not connect to it. FACT: The Cedar Rapids deployment has a WLAN link from the pole. The wires carry the 2-80 MHz. How does that go from 2-80 MHz --into-- the house? FULL FACT: plugin smart appliances are being promoted. How do they work if the signal does not come into the house. It creates S9++ signals from 2 to 80 MHz. FACT: Sure, if you drive your 1972 Nova with 'HAM ON BOARD' sticker (for example) under the power line, this is a consistently true statement. FULL FACT: These levels are well documented and allowable within 33M of any power line or household appliance. affected nation wide is in the hundreds. For comparison, the number of hams affected by tower erection restrictions is in the tens of thousands. FULL FACT: I am able to purchase a house where there are no tower restrictions. With BPL, I have no choice except to disconnect from the power grid on a house far from powerlines. Infact, you would need to be a mile from powerlines. FACT: Sure, if very nearby and unfiltered, this could be a problem. However, the FCC rules require filtering for RFI mitigation in such circumstances. FULL FACT: So far, none of the hams reported anyone adding filtering and the BPL industry has been unresponsive. Also, I listen to radios in the bands from DC to daylight. I prefer to listen to foreign broadcast along with amateur bands. How would they be able to keep ALL the bands clean? Blocking foreign broadcast in any country is against the international law. Our government must protect these bands from interference. FACT: A vocal minority of hams want to 'kill BPL'. As opposed to working with the power companies to fix the problem. FULL FACT: Once BPL has a foothold, there will be very little chance of having any issues resolved. All the other countries who tried BPL dumped it. FACT: The press has used this exchange, in many circumstances, to view us with the jaundiced eye of being anti-technology and very out of date. Why is it that they just don't see it as reason to 'kill BPL'? FULL FACT: The media is for big business, owned by big business and promotes big business. That is why the press has lost most all it's respect from the people. God Bless, Chip N1IR Chip, don't be so easly fooled! The BPL industry only has one goal in mind, to make money. Radio enthusiast are their enemy. |
Chip, don't be so easly fooled! The BPL industry only has one goal in
mind, to make money. Radio enthusiast are their enemy. =================================== Radio enthusiasts are not their enemy. At most they may become an insignificant nuisance to the capitalist system. |
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