w2co
join:2003-07-16
Longmont, CO
| Nice try but...
The overall interference potential would be reduced as far as ionospheric propagated signal strengths, however the interference potential to the local neighborhood would still be very high. All it would take is one pole mounted device to disrupt the entire block and farther because the existing wiring from the pole to the houses and the internal wiring in the houses would still be radiating unwanted interference. Now it also would not protect anyone from interference into the system from any CBer down the street either. Remember as little as 5watts transmitted at frequencies anywhere from 1 to 30Mhz will disrupt BPL locally. Amateur radio stations can and do transmit many times this power on a regular basis, so I still don't see it working in this way. Nice try Motorola but no cigar. |
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NetDroid2
join:2004-08-16
Excelsior, MN
| If this solution does actually partially work.
Could they make a ton of money if they could get it to work with that other hyped standard, WiMax?
That's the only way I can see that even half way working.
WiMax to the pole then BPL to the home.
Although it already sounds like the consumer grade BPL we can already use for networking. |
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RadioDoc
58ef2c0
Premium,ExMod 2000-03
join:2000-05-11
 ·AT&T Midwest
| reply to w2co
It's basically two existing technologies tied together: Motorola's "Canopy" wireless system connected to a modified "Homeplug" hub at the transformer and modems at each customer. The 110/220v service drop is usually triaxial and as such does not radiate much of anything. The Homeplug "BPL" technology has been around for years.
In fact, this is hardly "BPL" as most of those stock-swindle fluffers would define it.
The biggest problem with traditional "BPL" is the segments on the utility side of the local service transformer. Those distribution lines are excellent longwire antennas. |
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Just_the_facts
@boeing.com
| reply to w2co
It may not be perfect, but it will be much better than the other BPL approaches. The lines from the transformer to the house are generally twisted. Motorola is feeding between a hot and return, so the twist will reduce the radiation quite a bit. Also, in general, they should be coupling much less power onto a line that is much shorter, since now they are only exciting between the transformer and the house. Lower power level, shorter line, and twisted line together will make a very large difference in both susceptibility and radiation. Also, the ham bands (and I suspect the CB band) will be hard filtered.
Think this is going to work! |
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mc5w
join:2002-06-14
Independence, OH
| 4160 volts is an obsolete distribution voltage. Actually, anything less than 7,200Y12,470 volts is obsolete - 6640Y11,500 is a bit of a quibble. Most distribution systems nowdays are 7,200Y12,470 volts to 19,920Y34,500 volts.
At any rate, this marriage between wireless and homeplug ( or alternatively, DOCSIS and homeplug ) seems to solve the voltage isolation problem and that aluminum siding can bollux up radio load control and automatic reading. Comverge makes a load/capacitor controller that works on the 1-way pager principle and AMR devices that work on the 2-way pager principle.
It probably will never compete for broadband via DSL, satellite, or CATV - I think that we should call this technology mediumband or middleband instead of broadband because of the slow data rate. It certainly would be faster than dialup.
Also, I have seen a meter adapter for AMR that contains prots for Homeplug, DOCSIS, and Ethernet. This is basically a multiple technology modem. |
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