Too bad Asimov didn't live long enough to revist his predictions. I'm sure he would have had something interesting to day about the hazards of prediction.
Here's hoping that my prediction is as good as the best of his, although we can never know.
You have more problems than just selecting 4 wires. Each pair of wires from the 100 megabit Ethernet is a balanced pair, and coax is unbalanced. Also, the coax impedance is probably 75 ohms (if I remember correctly) and the twisted pair is around 120 ohms. So you would need a transformer for each pair to match the impedances and handle the balanced to unbalanced conversion. Finally, these transformers would need to be small and broadband to avoid unintentional impedance mismatches.
Like the others have suggested, just use the coax as a pull wire for Cat 5e.
I wonder what will happen in locations that have no cellphone coverage, such as at Phantom Ranch at the bottom of the Grand Canyon? There used to a single AT&T pay phone down there, which became exorbitantly expensive the last time I used it ($4.95 for the first minute). I suppose some third party service will pick up the slack, but the costs are sure to become even more ridiculous. It might be cheaper to carry a satellite phone!
The state of Ohio could probably get better results without spending any money by changing the franchise laws. I live in Bloom Township, Fairfield County, Ohio. Insight Communications "owns" the cable franchise for this township. Even though Insight offers Road Runner in adjacent Franklin County, they have no near term intention of providing such service in Bloom Township.
Yet, the Greenfield Township line is only 500 feet away, and Time Warner owns the Greenfield Township cable franchise. Naturally, one can get Road Runner in Greenfield Township.
If Ohio changed the laws to eliminate the exclusivity and allowed cable competition, even just in rural areas, I bet a lot more of Ohio would have broadband access via cable modem.
BTW, I arranged with my neighbor to get Time Warner Business Class deliver to his address and send it to my house via an 802.11 link. He already has Road Runner, and Time Warner won't deliver more than one instance of their service to any address, so I still have to pay twice as much per month, although the download speed is typically 2 megabytes per second.
According to statistics from 1997 to 1999, Canadian women have a life expectancy of 81.4 years compared with 75.9 years for men.
But when deaths from preventable causes are excluded, life expectancy for women is 73.5 years, slightly less than the average of 73.9 for men.
Why does removing deaths caused by risky behavior drive *down* the life expectancy?
I recommend the Historical Electronics Museum near Baltimore, MD. I visited the HEM when I attended a Digital Communications Conference (check out tapr) a few years ago. The radar displays were fascinating. Other old military electronics stuff was interesting, too, e.g., the electronics in a torpedo. But the sophistication of the radars was amazing.
Historical Electronics Museum
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Too bad Asimov didn't live long enough to revist his predictions. I'm sure he would have had something interesting to day about the hazards of prediction. Here's hoping that my prediction is as good as the best of his, although we can never know.
Do the designations 12SA7, 12SK7, 12SQ7, 50L6, 35Z5 still ring a bell with anyone?
Sounds like the tube line-up of an All-American 5 tube radio of the octal tube socket era. K1LT
Just like my car runs on oxygen.
You have more problems than just selecting 4 wires. Each pair of wires from the 100 megabit Ethernet is a balanced pair, and coax is unbalanced. Also, the coax impedance is probably 75 ohms (if I remember correctly) and the twisted pair is around 120 ohms. So you would need a transformer for each pair to match the impedances and handle the balanced to unbalanced conversion. Finally, these transformers would need to be small and broadband to avoid unintentional impedance mismatches. Like the others have suggested, just use the coax as a pull wire for Cat 5e.
Crucially, they could once and for all dispel 40 years of wild conspiracy theories.
New facts would never dispel a perfectly good conspiracy theory. Instead, the new facts are evidence that the conspiracy is still on-going.
Up your k1lt!
... that we've been using the same architecture for almost 60% of my life. More than 60% if you count the 8080. -K1LT
I wonder what will happen in locations that have no cellphone coverage, such as at Phantom Ranch at the bottom of the Grand Canyon? There used to a single AT&T pay phone down there, which became exorbitantly expensive the last time I used it ($4.95 for the first minute). I suppose some third party service will pick up the slack, but the costs are sure to become even more ridiculous. It might be cheaper to carry a satellite phone!
The state of Ohio could probably get better results without spending
any money by changing the franchise laws. I live in Bloom Township,
Fairfield County, Ohio. Insight Communications "owns" the cable
franchise for this township. Even though Insight offers Road Runner
in adjacent Franklin County, they have no near term intention of
providing such service in Bloom Township.
Yet, the Greenfield Township line is only 500 feet away, and Time
Warner owns the Greenfield Township cable franchise. Naturally, one
can get Road Runner in Greenfield Township.
If Ohio changed the laws to eliminate the exclusivity and allowed
cable competition, even just in rural areas, I bet a lot more of Ohio
would have broadband access via cable modem.
BTW, I arranged with my neighbor to get Time Warner Business Class
deliver to his address and send it to my house via an 802.11 link. He
already has Road Runner, and Time Warner won't deliver more than one
instance of their service to any address, so I still have to pay twice
as much per month, although the download speed is typically 2
megabytes per second.
Vic, K1LT
I first heard it as "never underestimate the bandwidth of a station wagon full of magtapes".
There, two archaic conveyances in the same cliche.
Why does removing deaths caused by risky behavior drive *down* the life expectancy?
I recommend the Historical Electronics Museum near Baltimore, MD. I visited the HEM when I attended a Digital Communications Conference (check out tapr) a few years ago. The radar displays were fascinating. Other old military electronics stuff was interesting, too, e.g., the electronics in a torpedo. But the sophistication of the radars was amazing. Historical Electronics Museum
If the crew of the ISS has to come down in the Soyuz, where would they land? In the US or in Russia?
Congress shall pass no law that protects a business model when such a law reduces the freedom of choice.