Sure, no one needs an 80GB drive, but that's about the bottom of the market today, sizewise. You could go smaller, but you'd probably not save more than $10 or $20.
For example, Newegg has a 40GM SATA150 Maxtor for $49, and an 80GB SATA150 Maxtor for $57.
Check out the latest issue (April '06) of QST magazine. The cover story is about a ham who home-brewed a fully modern HF transceiver, with specs that actually exceed commercial transceivers costing $3K+.
Japan has a large amateur radio population, I'm wondering what effect this will have on them?
While the song may have been used in "Cocktail," I think it dates to the late 60s or maybe early 70s, back when the Beach Boys actually looked like they could ride a surf board.
George Westinghouse founded (at least) two companies. Westinghouse Air Brake (WABCO) and Westinghouse Electric, back in the late 1800s. AFAIK, they were always separate companies, despite both being located in and around Pittsburgh.
Also, fl (as in flip) is missing, at least once. And the fi is missing from "file" quite a number of times. Is this some weird DOS-ASCII vs. Unix-ASCII deal?
Distribution voltage (what feeds the pole pigs) is typically from a few kV (~5kV) to quite a few kV (~25kV).
If the BPL signal is carried on the distribution lines (some systems don't inject until after the distribution transformer), a bridge for the BPL signal is needed to bypass the transformer, since transformers are great low pass filters. This of course adds to the cost of a BPL system.
Actually, I believe it's 1500W PEP output, which for modes like CW, PSK31, Pactor, etc., is the same as 1500W DC. In any case, way stronger than the digital BPL signal on the power line.
Telephone lines are twisted (hence, "twisted pair"), which effects the cancellation (shielding) of stray RF.
The telco's DSL systems use much higher frequencies that (most) BPL systems. The interference problem from the most common type of BPL stems from its use of high-frequency (HF) bands, which are already in use by public safety, military, aeronautical and amateur radio operators.
AFAIK, all 802.11x wireless systems are FCC Part 15 devices. The correct term is unlicensed, not unregulated. In fact, Part 15 contains a number of regulations, such as "may not cause harmful interference to licensed services" and "must accept interference from licensed services." Interference has been one of the problems with BPL/PLC systems.
That said, the FCC question is an interesting one, since the FCC has made a big deal of Federal Preemption in other situations, such as zoning regulations that unduly restrict antenna height.
... or wouldn't a portable one of these be a great way to take out all the cameras in, say, a bank?
There's still other details to work out, like the armed guards, the exploding ink in the money packets, etc., but I'm glad those Georgia engineers solved one of my problems.
Although there's also the clause about "willful and malicious interference" that they might get you on. Then again, is it possible to interfere with an unlicensed operation that, by regulation, must accept without recourse any interference?
That said, there's nothing quite like an amp at 2.5kV, hitting the plates of a pair of 3CX800A7s.
Actually, it would be pretty hard to add shielding to existing power lines. Remember, the lines up on the poles aren't 110/220 house wiring, they're running distribution level voltages, probably 7-15kV. The shield should be a ground potential, so you'll need insulation between the conductor and the shield. Think of insulation thicknesses ~100 greater than for house wiring.
Which would add greatly to the weight of the line, so they'd have to re-engineer the whole distribution system, pole spacings, guy wire strengths, everything.
As often has been said in this BPL debate, we'd all be better off if they just strung some fiber.
Slashdot Mirror
I must have missed something.
For example, Newegg has a 40GM SATA150 Maxtor for $49, and an 80GB SATA150 Maxtor for $57.
Japan has a large amateur radio population, I'm wondering what effect this will have on them?
If the BPL signal is carried on the distribution lines (some systems don't inject until after the distribution transformer), a bridge for the BPL signal is needed to bypass the transformer, since transformers are great low pass filters. This of course adds to the cost of a BPL system.
73 de KQ3T
I don't see "We're sorry." I don't see "We were wrong." I don't see "We promise we won't do it again." I don't see "Please forgive us."
All I see is "We're going to think about how we do this in the future."
I think the article is referring to RH Enterprise Linux as being expected in the second half of 2006, not Fedora Core.
That said, the FCC question is an interesting one, since the FCC has made a big deal of Federal Preemption in other situations, such as zoning regulations that unduly restrict antenna height.
Is it time for a chorus of "Fight for the Glory of Carnegie!" ?
There's still other details to work out, like the armed guards, the exploding ink in the money packets, etc., but I'm glad those Georgia engineers solved one of my problems.
If you can't take as much stress, I don't think that teaching in a public school is the right move to make.
What about if you were in New Orleans?
The only mention of HomePlug was in the Slashdot teaser. The article is about BPL, Broadband Over Powerline, not about using house wiring for a LAN.
In planning for emergencies, you have to plan for the worst case, not the typical case (and I don't know if your experience, or his, was typical).
That said, there's nothing quite like an amp at 2.5kV, hitting the plates of a pair of 3CX800A7s.
Which would add greatly to the weight of the line, so they'd have to re-engineer the whole distribution system, pole spacings, guy wire strengths, everything.
As often has been said in this BPL debate, we'd all be better off if they just strung some fiber.
Actually, I thought that Mississippi and Louisiana are two of the two poorest states.