HDTenEightyP/NetNews huggingface dataset:
From: kbass@gmuvax2.gmu.edu (Ken Bass)
Subject: Re: Cable TV Rules
Organization: George Mason University, Fairfax, Va.
Distribution: na
Date: Thu, 19 Nov 1992 16:09:52 GMT

In article <1992Nov5.182343.17568@doug.cae.wisc.edu> kolstad@cae.wisc.edu (Joel Kolstad) writes:
>In article <3977@eastman.UUCP> lsls00@iliad.Kodak.COM (Ilia Levi) writes:
>>
>>Actually you are not buying the whole spectrum of frequencies. Cable company
>>is offering you service with certain conditions attached. 
>
>I don't have cable TV here, so I'd have to take a look at my parents to
>see just what you sign with the cable company.  Someone I don't think they
>word it to the effect that "You are purchasing the reception of 4.5MHz of
>this line.  The center frequency of this may be altered at will."
>
>(And heck, even if this were true, in the mathematical sense where you
>could instantly change channels you could still sample the entire
>spectrum. :-) )
>
>>If you don't like
>>those conditions(more money for the extra extensions) you have a right to
>>refuse to buy the service. If you CHOOSE to buy their service, you must, morally
>>and legally, abide by their rules.
>
>I wholeheartedly agree.
>
>But I think this entire thread is really about just what the cable company
>contract meants _legally_.  If a contract says, "You must pay for more than
>one hookup," but doesn't specify that I can't receive more than one channel
>at a time, then using a distribution amp with that one hook up is a legally
>valid way to obtain _more_ hookups.
>
>> If you don't like their rules, get a dish,
>>don't watch TV, etc. This is a free country not only for the consumer, but for
>>the business as well.
>
>That last sentence doesn't make sense.  Consumers (living, breathing human
>beings) live by entirely different rules than businesses (non-sentient
>conceptual things), and therefore are "free" in totally different, non-
>analogical senses.
>
>As far as getting a dish goes... Be careful!  Pretty soon they may try to
>outlaw the reception of your over the air signals!  It's already illegal
>to eavesdrop on the celluar phone frequencies, you know.
>
>					---Joel Kolstad

Hookup to me means paying for them to hook up externally. If the give me
two wires, sure Ill pay. But if I split the signals inside with my
power, they dont deserve anything.

-- 
Ken Bass (kbass@gmuvax2.gmu.edu)              |   Telecommunications  
George Mason University                       |   Techniques Corp, 
Student, Department of Electrical Engineering |   Software Engineer 
Newsgroups: sci.electronics
From: orville%weyrich@uunet.uu.net (Orville R. Weyrich)
Subject: Re: How are neon tubes made?
Reply-To: uunet.uu.net!weyrich!orville
Organization: Weyrich Computer Consulting
Distribution: usa
Date: Sun, 22 Nov 92 02:53:12 GMT

In article <1992Nov16.215103.8284@digi.lonestar.org> jsevinsk@digi.lonestar.org (John Sevinsky) writes:
>I've been thinking about the idea of making my own neon tubes, and I have no
>idea what's involved with filling the tube with neon.  Does anybody know what
>kind of equipment is needed and how much it would cost?
>


Neon? :-)

Actually, it is mostly vacuum.

And many "neon" tubes are not "neon" tubes -- only the ones with a 
characteristic orangish glow.


orville

--------------------------------------   **************************************
Orville R. Weyrich, Jr.                        Weyrich Computer Consulting
Certified Data Processor                     POB 5782, Scottsdale, AZ 85261
Certified Systems Professional                   Voice: (602) 391-0821
Certified Computer Programmer            Internet: orville%weyrich@uunet.uu.net
--------------------------------------   **************************************
From: flaufer@flc.rni.sub.org (Felix Laufer)
Newsgroups: sci.electronics
Subject: Re: Want to convert RGB to NTSC signals
Date: 24 Nov 92 03:26:43 GMT
Organization: Felix Laufer Chemistries

jhwhit01@ulkyvx.louisville.edu writes:


>Check out the Motorola MC1377P RGB-to-PAL/NTSC encoder chip.  It costs $2.95

Is there any chance of existing a chip, that codes PAL or NTSC to RGB ?

Then I would create a cheap NTSC to PAL Converter and I would
be able to watch the Videos from my american friend on my PAL TV-set and VCR.

Any Chance ?

Felix

P.S. please eMail.

-- 

Felix Laufer - 6800 Mannheim 24 - flaufer@flc.rni.sub.org - +49 621 852098 Q
Newsgroups: sci.electronics
From: dheisler@CERIS.Purdue.EDU (Dave Heisler)
Subject: Need help with xtals and an xtal scanner
Organization: Center for Environmental and Regulatory Information Systems, Purdue University
Date: Tue, 17 Nov 1992 17:53:41 GMT

Hello, i'm thinking about buying and old 4 channel portable
crystal scanner. what i would like to do is re-xtal it
for the local amateur radio repeaters. (vhf)

So I called radio shack and they have no idea if they can get them
or how long it will take. Then I call a xtal company and they
need to know the following:

Actual frequency : just the straight 14x.xxx right?
holder           : what's this? Did i misunderstand?
tolerance        : is that ppm? what's normal for this sort of
                   thing?
load capacity    : is that like power capacity? what's normal?

Can you help? thanks.
a crystal neophyte
dave

Newsgroups: sci.electronics
From: medin@catbyte.b30.ingr.com (Dave Medin)
Subject: Re: How is this (SDLC?) CRC computed ?
Keywords: SDLC, CRC, MNP
Reply-To: medin@catbyte.b30.ingr.com
Organization: Intergraph Corporation, Huntsville AL
Date: Thu, 19 Nov 1992 20:03:24 GMT

In article <1992Nov19.174655.1416@cs.tcd.ie>, dherity@cs.tcd.ie (Herity D.) writes:
|> I'm doing an SDLC implementation in software (processing every bit) and
|> am stumped by the CRC calculation.
|> I receive a packet 03h,05h,08h,17h,31h,94h, the last two bytes of which are
|> the CRC. This is in MNP level 5. I've read several versions of how the
|> SDLC CRC is computed, but I can't reproduce it. I've tried CRC-CCITT,
|> CRC-16, LSB first and MSB first, initialising to 0s and 1s, but there's
|> something missing.

I've got a public domain program to do 16 bit CRC's (CCITT) for
HDLC by the table lookup method. It is also in the PPP RFC 1331,
addenums. I can mail the table and some "C" fragments that use it.
It is invertible, getting the magic number 0xf0b8 as a result.
I think I saved my small test program, too. I'll e-mail what I've got
to requestors.

The Internet RFC example is much more readable than my modified
code, and I would advise looking at it if at all possible.

-- 
--------------------------------------------------------------------
       Dave Medin			Phone:	(205) 730-3169 (w)
    SSD--Networking				(205) 837-1174 (h)
    Intergraph Corp.
       M/S GD3004 		Internet: medin@catbyte.b30.ingr.com
  Huntsville, AL 35894		UUCP:  ...uunet!ingr!b30!catbyte!medin

   ******* Everywhere You Look (at least around my office) *******

 * The opinions expressed here are mine (or those of my machine)
Newsgroups: sci.electronics
From: dag@col.hp.com (David Geiser)
Subject: Re: police laser radar
Date: Tue, 17 Nov 1992 16:32:43 GMT
Distribution: usa
Organization: HP Colorado Springs Division

> If your source is brighter than the reflection of the officer's source.
> 
> If they find the system on your car, say it is your garage door opener.

It's not illegal to broadcast IR, yet.
-- 

 Boycott Colorado.
Newsgroups: sci.electronics
From: abond@rvgs.vak12ed.edu (Andrew H. Bond)
Subject: Re: Home made personal handheld stun-gun projects?
Organization: Virginia's Public Education Network (Roanoke)
Date: Tue, 17 Nov 92 07:40:58 GMT

slmdj@cc.usu.edu writes:
> In article <1djos5INNsjo@usenet.INS.CWRU.Edu>, ah335@cleveland.Freenet.Edu (Richard Banks) writes:
> > 
> > Has anyone out there ever attempted and/or completed a home made
> > stun-gun device of any type?  I'm very interested in this and
> > I have some ideas, but I wanted to first hear from someone
> > who has done this before.  It would seem rather simple to make
> > a cheap effective stun-gun.
> > 

	Check out this month's issue of Radio-Electronics. In
it, they describe how to build various high voltage devices,
including a "stun gun" similar to the type used by police
officers. It looked pretty neat, and I am planning on building
it: you will need about $20 in parts. P.S. don't electrocute
yourself! :-)    --AHB
-- 
Andrew H. Bond, Roanoke Valley Graduate Center
From: rxy5310@hertz.njit.edu (Rolan Yang  Wasteland Engineer)
Newsgroups: sci.electronics
Subject: Re: Soundblaster voicemail help needed
Keywords: Voice mail
Date: 19 Nov 92 06:54:47 GMT
Organization: New Jersey Institute of Technology, Newark, N.J.

If you have a Bell telephone, you can just unscrew the mouthpiece
of your handset and tie the two output wires (cut and strip) to
the two on the microphone.  I would recommend keeping the output 
volume very low. I think that you can run the two wires from the
earpiece right into the mic of the soundblaster as well. You may
have to throw a resistor or pot in there.
If your phone isn't Bell or easy to unscrew, there are many cheap
phones out for $5 or you can subscribe to Time and cancel after the
first issue and get the phone for free.:>
                                            Rolan Yang
                                         Wasteland Engineer
From: ylo@osiris.kbfi.ee (Ylo Mets)
Newsgroups: sci.electronics
Subject: Re: Secam to Pal
Date: 18 Nov 1992 20:59:17 +0200
Organization: Institute of Chemical Physics and Biophysics, Estonia
NNTP-Posting-Host: osiris.kbfi.ee

pjhicks@hard03.acri.fr (Peter J. Hicks) writes:
:  Is there anybody out there that knows how to transcode Secam to Pal ?
:  
:  Are there chips available that do this function or is it a matter of building a mass of logic 
: 
:  if  so,  hows about a circuit diagram.
: 
:   Final question  What is the difference between  Secam and Pal ?


Hi!
Philips (and probably Telefunken too) produces a special SECAM to PAL
conversion chip. The name is TDA 3592, and you will need a 64 microsec.
glass delay line and an about 470 nanosec. delay line and a couple of 
coils and a quartz (think it was 8.86 MHz).
The application circuit is given in Philips' catalog on
video IC-s.
Hope this gives a lead.

Ylo      ylo@osiris.kbfi.ee
Organization: Senior, Electrical and Computer Engineering, Carnegie Mellon, Pittsburgh, PA
Newsgroups: sci.electronics
Date: Fri, 20 Nov 1992 23:30:20 -0500 
From: Wayne Alan Martin <wm1h+@andrew.cmu.edu>
Subject: Fluke 45

Hello,

I am considering the purchase of a FLUKE 45, and I was wondering if
anybody had recommendations for or, against or just general experience
with it.

Thanks

Wayne Martin

Newsgroups: sci.electronics
From: tgzhang@MtHolyoke.edu (Tian Ge Zhang)
Subject: Simulation questions on Magic cad tool
Organization: Mount Holyoke College
X-Newsreader: Tin 1.1 PL5
Date: Mon, 23 Nov 1992 17:19:44 GMT


Subject: Simulation questions on Magic cad tool
Newsgroups: sci.electronics
Organization: Mount Holyoke College
Distribution: 
Summary: 
Keywords: 



I hope this is a good place to ask about Magic cad tool, but I am trying 
anyway. What I have got to in the simulation program irsim is, I am 
able to run the simulation of Tut11a module. But when I called up my
own cell which I just drew up( a simple NAND gate), I first wasn't sure
about how to create a .cmd file(is this a necessary step at all?), so
I looked at tut11a.cmd and copycat a file NAND.cmd, then come the 
hard part:

irsim>@ NAND.cmd
irsim>h input1    *input1 is a vector I defined signifying one of the inputs
irsim>d            *display node value

what I saw next is a line with input1=X, which shows that the value is
still undefined (X) even though I have assigned it to be 1 with"h input1".
I am quite puzzled by the ineffectiveness of the command, it makes me
wonder whether in the right track. Please let me know if you have a clue
about this.  Thanks.

--Tian
email address: tgzhang@mhc.bitnet
From: jeh@cmkrnl.com
Newsgroups: sci.electronics
Subject: Re: Big NASTY Brother Radio Shack
Date: 21 Nov 92 15:23:09 PST
Organization: Kernel Mode Consulting, San Diego, CA

In article <1992Nov20.203319.27826@u.washington.edu>, pollock@milton.u.washington.edu (Joe Pollock) writes:
>      It appears that Tandy/Radio Shack lays claim to anything you may
> develop, even on your own time, that may be in any way related to your
> employment at Radio Shack.  It was phrased as "For instance, if you get
> an idea for a computer game, and write and sell it, Tandy claims the
> rights to it, because you got the idea for it here."  Sounds like it
> goes far beyond normal employment agreements.

It isn't that far beyond, but... 

Check your state laws.  Many states have laws that override such provisions.  

	--- Jamie Hanrahan, Kernel Mode Consulting, San Diego CA
Internet:  jeh@cmkrnl.com, hanrahan@eisner.decus.org, or jeh@crash.cts.com
Uucp:  ...{crash,eisner,uunet}!cmkrnl!jeh
From: chenh@neptune.ecs.csus.edu (H. Philip Chen)
Newsgroups: sci.electronics
Subject: Re: DTMF Decoder (I know -- "AGAIN?")
Date: 21 Nov 92 02:28:07 GMT
Organization: California State University, Sacramento


John Goggan <34II5MT@CMUVM.CSV.CMICH.EDU> writes:
: This comes up now and then and I'm always interested, but no one ever
: seems to come up with a definate answer.  I'm looking for a schematic
: for a touch-tone decoder circuit.  Something that simply takes audio
: input and lights an appropriate LED for 0-9,#,*,A-D when it "hears"
: it on the audio line.  I've done this project with a bunch (12-16)
: seperate tone decoders and then used AND gates, but as everyone knows,
: it's not a very good design and it is very sensitive to false readings.
:[...]

12 to 16 decoders is quite a lot.  Why not use a DTMF Receiver (not
really called a Decoder even though that's what it does) and you'll
get to solve the tone mystery with less parts?  Most DTMF Receivers read
the tone(s), and sends the data out in 4-bits (hexadecimal) (can also
be interfaced with a micro- controller/processor).

Anyway, if you're interested, check the databooks from various
manufacturers such as National Semi, Motorola, Mitel, AT&T, et al.
Those books should have the word(s) - "communications" or "tele-
communications" on their covers (not the Linear databook for sure).
(The keyword inside, as mentioned, is "DTMF Receiver".)

I've got a bunch of Motorola MC145436P DTMF Receivers laying around
on my table right now (we're prototyping a 12-port phone switch &
voice mail system (analog & digital)).  The datasheet for that chip
says:  +5V supply required, detects all 16 standard digits, requires
a 3.579545 MHz crystal, 14 pins, etc.  It's also pin compatible with
the SSI-204 (Siliconix?)

Anyway, since you wish to hook up some LEDs to indicate which key was
pressed, you'll also need a 4-to-16 Decoder/Demultiplexer, two octal
Line Drivers, and some resistors.  Probably have to include a voltage
divider somewhere in the front end of your circuit if necessary.
(Sorry, but I'm not familiar with the board that you mentioned later in
your article (the one that vi deleted; heh-heh, blame the software:-)))


Hope this helps a little,

-phil
Newsgroups: sci.electronics
From: rsnider@xrtll.uucp (Richard Snider)
Subject: Re: Commercial killer
Organization: WCOM Public Access Unix - Toronto
Date: Fri, 20 Nov 1992 14:07:57 GMT
Keywords: commercial killer 

In article <1992Nov12.162330.24658@newstand.syr.edu>
dwjurkat@rodan.acs.syr.edu (Jurkat) writes:
>Here is my idea.  Take a commercial, digitize the beginning and end of
>it and stick it in a computer and also include the length of the
>commercial.  Then hook the computer to the VCR and when the VCR is used

[...] Stuff about comparing digitized samples of video deleted

>the most important parts of the signal (like maybe just a few lines of
>any given frame should be enough).

>My question:  Is this feasable, what is the minium amount of information
>needed from a frame or set of frames, is it possible to at least nix the
>most anoying commercials?

Feasable, maybe.  Practical, no.

Not getting into the discussion of how much CPU/memory bandwidth is
required to digitize video in "real-time" to any decent level of
information that could be used to compare against another signal, 
I forsee no way of comparing this information against even the same
commercial played off a video tape for instance.  It is easy enough
to compare them but the difficulty is in trying to decide if they
are the same.   There is so much noise, and other junk that gets
digitized along with it that would be different each time (not to
mention, just not starting the sampling at the exactly same spot
on the waveform). There are many other problems with this idea
as well.

>By the way I was wondering why do commercials always seem significantly
>louder then the program you are watching and can this(if true) be used?

Commercials are always louder than the programs they are stuck
in.   It is what the advertisers pay for.  This is intentional.

						.....Rich
   					rsnider@xrtll
Newsgroups: sci.electronics,comp.robotics
From: martinez@rodan.acs.syr.edu (Kenneth Mtz. (YONIX))
Subject: Micromouse=>motor=>power
Organization: Syracuse University, Syracuse, NY
Date: Tue, 17 Nov 92 03:00:12 EST

 For our micromouse project we have decided to use dc reversible motors. We
 are trying to figure out what voltage and current ratings are typical
 for a project like this. It seems like 6 AA batteries would suffice.     
 Our understanding of motors is quite limited, apparently control (for
 permanent magnet motors) is usually done by varying the armature voltage
 there seems to be a linear relationship with speed and this voltage. But
 how about current? how does one go about calculating what will provide
 enough torque to move the motors under the mouse's load?
 
  Any contribution will be greatly appreciated. Please respond directly
  I will post a summary if people are interested.
  
  Thanks in advance,
  Kenn.
Newsgroups: sci.electronics
From: matthew@hitech.com.au (Matthew Smith-Stubbs)
Subject: DTMF Siganlling frequencies required
Organization: HI-TECH Software, Brisbane, QLD, Australia.
Date: Mon, 23 Nov 92 10:49:40 GMT

Hi !
	Has anyone got the DTMF Siganalling frequencies.

Ta muchly,
--
Matthew Smith-Stubbs           |          Wanted :
E-mail : matthew@hitech.com.au |  .signature for this space. Must be funny,
Brisbane, Australia            | cheerful and hardworking. Apply within.
				 
Newsgroups: sci.electronics
From: e92_anh@vaxkab.lne.kth.se ()
Subject: 'DreamLight' wanted!
Reply-To: e92_anh@vaxkab.lne.kth.se ()
Organization: School of EE, Royal Institute of Technology
Date: Mon, 16 Nov 1992 11:19:44 GMT

On Sunday 15 November 1992, I was watching 'Beyond 2000' on Discovery
channel. One of the wonders they were showing this time was an apparatus
to -while you're sleeping- detect your REM's and then tell you that you
are dreaming (by flashing lights in front of your eyes for a while).
'DreamLight' I think it was called.

The idea is that you ACTUALLY CAN PERCIEVE THIS while sleeping and thus
get aware of the fact that what you are experiencing is, in fact, a
dream! Well, hey! This sounds cool, does it not?

Now, the reporter said that this device is something that anyone can buy
and use. The problem is that 'Beyond 2000' is an American program (I
think) and I live in Sweden. And as this 'DreamLight' has not yet found
its way to Sweden, I'd be very happy if someone could tell me WHERE I
CAN ORDER such a thing...

(Secondly, does it work??)

                                                         Andre'
Heinonen, Royal Institute of Technology, Sweden
From: davew@hpavla.lf.hp.com (Dave Woodie)
Date: Thu, 19 Nov 1992 12:47:02 GMT
Subject: Re: Request for information about the 6502 microprocessor
Organization: Hewlett-Packard Little Falls Site
Newsgroups: sci.electronics

In sci.electronics, mjcol@dcs.warwick.ac.uk (Mark James Collier) writes:

> Does anybody know how I can get as much information as exists about the
> 6502 microprocessor? For my third year project I am emulating the 6502 at the
> cycle level, ie via its internal registers. Thus I need to know information
> not normally included in programming texts. Can anybody recommend a book
> (eg what is Rodney Zak's 'Programming the 6502' like?) or provide an e-mail
> address for RockWell (or the designers of the chip, if not them)?

> Thanks in advance

> Mark Collier

> mjcol@dcs.warwick.ac.uk

I had a course a couple of years ago at Drexel U. that used the book
called "Programming & Interfacing the 6502, with Experiments", by
Marvin L. De Jong.  This book was published by Sams.  I found it very
useful  and still use many concepts in it as I work with other
microprocessors.

Regards,
Dave Woodie
From: mmpjh@angelo.amd.com (Javed Hussain)
Newsgroups: sci.electronics
Subject: FM-10 used as burglar alarm detect
Date: 21 Nov 92 01:15:57 GMT
Distribution: usa
Organization: AMD

Hello!
I have been following the thread on FM-10. I have an interesting application
for this. It is like this:	
     Set up a FM-10 trans. to transmit binary data. Somewhere there is a
     FM receiver which receives the data and put it on the serial port of
     IBM-PC. A program running on PC will read the port and will display
     the message on screen.
This requires a FM receiver capable of putting the received data on the 
serial port of a PC. I wonder if someone has such a beast or if anyone 
has any idea to build this. One good application of this will be to set
up a network of few homes in the neighbourhood and connect each home's
bulger alarm to FM-10 with a unique code and designate one or two homes
with PC as monitors. When a burglar alarm is triped, one will get the
code on the PC and call to check out the validity of alarm and the call
police. There are security companies who already do this, but their charges
are high.

Comments?
  
Newsgroups: sci.electronics
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: How to build noise reducer?
Date: Sat, 21 Nov 1992 22:40:28 GMT
Organization: U of Toronto Zoology

In article <zhenya.722056566@syzygy> zhenya@socs.uts.edu.au ( The Firefox.) writes:
>Does anyone have any ideas about the best way to build a device that takes
>an input from an external microphone, shifts the signal 180 degrees out
>of phase, and then re-emits it with little loss of resolution of the
>waveform in the process?

This is another one of those dream projects, like the radar-gun jammer
and the commercial killer, that crops up frequently in this group.

If what you're trying to do is get yourself some relief from your sister's
piano lessons, or the equivalent, you can basically forget it.  To do this
in any practical way, the system's emitter has to be either very close to
the noise source or very close to your ear.  Experiments have been done
with both; so far the only practical result is (expensive) noise-cancelling
headphones for use in light aircraft.

Earplugs are cheaper and more effective than anything you can make.
-- 
MS-DOS is the OS/360 of the 1980s.      | Henry Spencer @ U of Toronto Zoology
              -Hal W. Hardenbergh (1985)|  henry@zoo.toronto.edu  utzoo!henry
Newsgroups: sci.electronics
From: uteca042@unibi.hrz.uni-bielefeld.de (0116)
Subject: Dipol simulation wanted!
Date: Fri, 20 Nov 92 12:37:09 GMT
Distribution: usa
Organization: Universitaet Bielefeld

I need some stuff about programming a Simulation of a Dipol radiation
from Heinrich Hertz. It is very important for a friend of mine (electric
engineer). I know that I got a 3D Simulation from a ftp server along time
ago, but I deleted it because I had no use for it. Knows anybody where I
can get it once again? I would very pleased if someone send me email about it.

Send to
uteca042@unibi.hrz.uni-bielefeld.de


Newsgroups: sci.electronics