SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : Winstar Comm. (WCII) -- Ignore unavailable to you. Want to Upgrade?


To: Teegir who wrote (5320)4/20/1998 4:22:00 PM
From: MangoBoy  Read Replies (1) | Respond to of 12468
 
<< What US WEst is going to deploy is variable rate ADSL...as usual, the press got it messed up as VDSL... >>

No, this is real VDSL from NextLevel.

c.f. telechoice.com

mark



To: Teegir who wrote (5320)4/20/1998 5:31:00 PM
From: TheSlowLane  Read Replies (1) | Respond to of 12468
 
Why is this bad news for WinStar? The way I read it, this is positioned for the residential market. WinStar bought the LMDS licenses to patch a couple of holes in their footprint, not to deliver the bulk of their services (38GHz). I think USWest knows that the RBOC's will be getting encroached by the cable/broadband companies (like US West Media Group, now known as MediaOne Group) and are reacting accordingly. MediaOne has rolled out dial tone in parts of Atlanta and LA. They will be rolling it out elsewhere ASAP.



To: Teegir who wrote (5320)4/20/1998 6:29:00 PM
From: DubM  Respond to of 12468
 
Teegir, I have a hard time seeing how DSL (no matter what other letters are placed in front) is any kind of threat to WCII. Also, you may find the following article interesting.
ÿ CAPITAL CURRENTS ÿ

Contact Jeff via e-mail at: jkrauss@cpcug.org

By Jeffrey Krauss, AM radio listener and President of Telecommunications and Technology Policy You've read about the telephone companies and computer companies forming an alliance to push a form of high-speed data over telephone lines called Asymmetric Digital Subscriber Line, or ADSL. It's a potential competitor to cable modems. But you haven't read about ADSL's dirty little secret. It radiates RF, and it causes interference to AM radio.
ADSL has been around in concept for about 10 years. The idea is simple. Those same copper wire pairs that carry analog voice telephone calls can also be used to carry digital data. The voice signal uses only the frequencies up to about 4 kHz. Copper wires have a larger bandwidth than that.
But getting from concept to practice has been difficult. First, not all telephone wire pairs are equally suited for carrying data. Loading coils and bridged taps create reflections. A continuous metallic path is preferable. Second, the distance from the central office to the subscriber is limited. The distance limitation depends on the data rate and the power of the transmitter. A 1.5-Mbps signal can travel farther than an 8-Mbps signal. Some early tests suggested that the usable distance was too short, in many cases, to support a viable service.

And then there is the question of standards. There are two competing standards proposals. One is called Discrete MultiTone (DMT) modulation, and the other is called Carrierless Amplitude and Phase (CAP) modulation. CAP is being pushed by Lucent Technologies and Bell Atlantic. DMT seems to have the support of nearly everyone else.

The latest news is that the Bell and GTE telephone companies, and computer companies such as Microsoft, Compaq, Intel, 3Com and Cisco, have formed an ADSL Working Group to promote ADSL deployment. They plan to work out the standards dispute in the U.S., get the compromise standard adopted internationally by the ITU, develop the components and systems needed to get ADSL products to the market, and start offering ADSL services to subscribers. And maybe do this all within the next year, although there is no real timetable.

RF emissions
Telephone industry subscriber distribution plant has largely employed baseband transmission technology over wire pairs. This has changed somewhat over time with the introduction of subscriber loop multiplexing technology. But in many neighborhoods, you can still see telephone technicians splicing huge bundles of wire pairs. Moreover, the drop wire and home wiring still uses baseband transmission of voice telephone calls. And this wiring is unshielded.

Meanwhile, cable plant has evolved to greater bandwidths over the years as coaxial cable technology has improved. Coaxial cable is shielded so that the signal does not leak out and cause interference.

Telephone drop wire and home wiring was installed to carry very low bandwidth voice telephone calls. Sure, it actually has a larger bandwidth than 3 kHz, and that bandwidth can be used to carry data. The higher the speed of the data, the greater the bandwidth that is needed. The data signals generate radio frequencies because of the DMT or CAP modulation. For a data rate of 1.5 Mbps, the frequencies on the wire might go up to 1 or 2 MHz.

ADSL signals on unshielded home wiring can leak, and can cause interference to AM broadcast reception. This was reported by an ADSL equipment manufacturer at a panel of the recent SCTE Conference on Emerging Technologies. The solution, he said, was to tear out the home wiring and replace it with shielded cable. Ha! Someone else said that nobody cares about interference to AM radio because nobody listens to it anymore. Meanwhile, the representative of the National Association of Broadcasters was busy taking notes.

In fact, the FCC cares about interference to licensed radio services. It cares about it a lot. Part 15 of the FCC Rules deals specifically with the issue of emission of RF signals from devices that do not intentionally generate and use RF. While Part 15 contains many technical specifications for these devices, the underlying requirement in Section 15.5 is that devices that generate RF signals must not cause interference to licensed radio services. That includes AM radio broadcasting. Moreover, LORAN, a radio system that provides position location information, operates at frequencies below AM radio.

It's one thing to turn on your PC and accept the interference that it causes to your radio reception. You can turn the computer off if you want, or you can accept the interference. It's another thing for the telephone company to start pumping RF into your home wiring, or down the wires hanging from their poles.

So the next time the FCC sends an inspector to your cable system to check for leakage, you might want to ask him to check the telephone plant for leakage as well, at AM broadcast frequencies.

Will ADSL become a real competitor to cable modems? Seems unlikely, given the problems. But ask me again next year.
Capital Currents by Jeffrey Jeff Krauss



To: Teegir who wrote (5320)4/20/1998 8:17:00 PM
From: limtex  Read Replies (1) | Respond to of 12468
 
Teegir -

1. Only a couple of weeks ago the first commercial communication on an LMDS system took place.

2. The scope and potential services to be carried on an LMDS sytem has not even been scratched.

3. Copper and fibre are very axpensive to install and they are also big bucks to maintain.

4. Wireless systems are much cheaper to install and much cheaper to maintain.

Now all this is so much vapour today but as each day goes past a lot of the biggest tech companies in the US are getting their LMDS system products to market. It amy not be this year but it will start getting up a huge head of steam next year and thereafter.

In the meantime WCII is getting more lines by the day and revenues are growing if anything faster than expectations. All this is not to say that the stock won't drop but that is market timing and quite a few of us on SI have learned (some the hard way) that market timing is a very very difficult occupation whom possibly only a handful of people in the world are any good at.

As I have said before all we need to focus on is where we think lines and and revenues will be one year from now and two years from now. The market will take care of the price of the stock if the comapny performs as many of us on this thread expect.

IMHO

L