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The Online World resources handbook

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Gazing into the future http://home.eunet.no/~presno/bok/17.html<br />

listserv@auvm.american.edu. Use the command Sub DEVEL L .<br />

<strong>The</strong> American Radio Relay League (AARL) operates an Internet information<br />

service called the ARRL Information Server. For information, send email to<br />

info@arrl.org with the word HELP in the the text.<br />

<strong>The</strong> WWW server for Amateur Radio will give you easy access to the Frequently<br />

Asked Questions and more. <strong>The</strong>re's another one at http://buarc.bradley.edu/.<br />

Cable TV<br />

Cable TV networks increasingly offer gateways into the Internet and other online<br />

services. One possible next step is for the cable TV networks to be interconnected not<br />

unlike the Internet itself. We'll see.<br />

Example: Continental Cablevision Inc. (U.S.A.) lets customers plug PCs and a<br />

special modem directly into its cable lines to link up with the Internet. <strong>The</strong> cable link<br />

bypasses local phone hookups and provides the capability to download whole books and<br />

other information at speeds up to 10 million bits per second.<br />

See http://www.teleport.com/~samc/cable1.html for more about Cable TV<br />

communications, try<br />

<strong>The</strong> next generation dial up modem<br />

New technologies with names like ADSL (Asymmetric Digital Subscriber Line), VDSL<br />

(Very High Digital Subscriber Line), and HDSL, have quietly been sneaking up from<br />

behind. <strong>The</strong>se modems can transmit data at speeds from 176 kbits/s to 52 Mbits/s,<br />

depending on line length.<br />

ASDL modems are connected to ordinary copper phone lines (2 wired), and will<br />

typically enable users to receive information at 6 mbits/s and up depending on the<br />

distance from the telephone exchange. Usually, they can only send at 176 to 640 kbits/s.<br />

This is enough for many applications, including video on demand.<br />

See http://www.adsl.com/ for background information, and supplement with a<br />

quick search using Alta Vista in Chapter 10.<br />

Satellite communications<br />

Hughes Network Systems (USA) markets DirecPC, a small satellite dish that picks up<br />

digital signals from the air on personal computers. Users can get news, sports, and stock<br />

information as part of a "basic access" content package. <strong>The</strong> basic service also includes<br />

a "Turbo Internet" application so subscribers can receive megabytes of Internet<br />

documents at high speeds of up to 24 Mbps.<br />

Globalstar is a wholesale provider of mobile and fixed satellite based telephony<br />

services for voice calls, Short Messaging Service (SMS), roaming, positioning, fax, and<br />

data communications via 48 low earth orbiting (LEO) satellites. As a wholesaler,<br />

Globalstar sells access to its system to regional and local telecom service providers<br />

around the world. It is due to start operations in the year 2000.<br />

Iridium went broke, and was reborn. In 2001, they offered data communications at<br />

a whapping 2,400 bps. Upgrade pacages promising 10 Kbps are on the horizon...<br />

Teledesic Corp. plans a network of 840 low earth orbit (LEO) satellites covering<br />

95 percent of the earth's surface by the year 2002. <strong>The</strong> idea is that we will have access<br />

to information from almost anywhere. With a small bit of hardware, By 2005, Teledesic<br />

will let you communicate at 16 Kbps duplex anywhere on the globe. With slightly bigger<br />

equipment, up to 2 Mbps.<br />

Bill Gates has invested heavily in Teledesic, so there might eventually be a<br />

Microsoft involvement.<br />

A consortium lead by Sky Station (USA) plans an international transmission system of<br />

balloons just 21 km over earth. In the year 2000, they will offer wireless, 1.5Mbps T1<br />

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