HDTenEightyP/NetNews huggingface dataset:
From: garland@ohstpy.mps.ohio-state.edu
Newsgroups: sci.electronics
Subject: What good are mylar capacitors?
Date: 6 Jan 93 07:24:17 EST
Organization: The Ohio State University, Department of Physics

Here's an elementary question about capacitors that I'm almost too embarrassed
to ask. Many audio circuits I've seen specify mylar, polystyrene, or paper 
capacitors in the .01uF-.1uF range.  Is there some advantage these types of
capacitors have (e.g., lower noise, more stability) over disk ceramics or
silver micas? For instance, I got a bag of .01uF 400V mylar capacitors on
close-out from a local parts distributor, but am not sure what I should use
them for. Presumably, their self-inductance is too high for rf circuits, where
I would normally use ceramics or micas, but are they suitable for general
purpose bypassing, etc. of power supplies, op amp, and TTL circuits? Are they
OVERKILL for such uses (i.e., is their temperature coefficient, tolerance, etc.
so good that I'm wasting them for such applications?)  I'd appreciate any
guidance. Thanks.

jim Garland
From: ulan@ee.ualberta.ca (Dale Ulan)
Newsgroups: sci.electronics
Subject: Re: NTSC sync rate questions
Date: 12 Jan 93 04:53:52 GMT
Organization: University Of Alberta, Edmonton Canada

mrapple@quack.sac.ca.us (Nick Sayer) writes:

>It's my understanding that the vertical retrace rate of NTSC is 60 Hz,
>and that it is interlaced, yielding 30 pictures per second. But the
>monitor says 55-90 Hz vertical sync rate. That sounds compatable
>to me.

Yes, that's good.

>It's my understanding that the horizontal retrace rate of NTSC is
>14 kHz. The monitor says that its acceptable range is 27-79 kHz.
>Now 14 x 2 is 28, but am I reading too much into that coincidence?
>Am I wrong about the NTSC horizontal rate? Or is NTSC too low-res
>for such a fine monitor to deign to display? :-)

This is not good... The NTSC horiz scan rate is 15.7 kHz, which is
out of the range of the monitor.

>-- 
>Nick Sayer <mrapple@quack.sac.ca.us> | "Turn around. Stick it out.
>N6QQQ @ N0ARY.#NOCAL.CA.USA.NOAM     | Even white boys got ta shout:
>+1 408 249 9630, log in as 'guest'   | Baby got back!"
>PGP 2.1 public key on request        |   -- Sir Mixalot

-----
Dale Ulan  VE6DAU         ulan@ee.ualberta.ca    Computer Eng. Undergrad
Newsgroups: sci.electronics
From: snydert@dmapub.dma.org (Tony Snyder)
Subject: ADDS viewpoint 78
Keywords: computer terminal
Organization: Dayton Microcomputer Association: Dayton, Ohio
X-Newsreader: TIN [version 1.1 PL8]
Distribution: na
Date: Mon, 4 Jan 1993 04:18:56 GMT

Hello there again.  I'm reposting my request for information on setting up
a newly acquired ADDS viewpoint 78 (VP-78) terminal about which I have no 
docs or other information.  It has no "dip" switches to play with either.
Any help in my quest for setup information will be greatly appreciated.
Thanks in advance, and just for the heck of it if you feel like responding
to let me know if I'm getting out with this message I'll appreciate that
too.
                        Tony Snyder

      No tag line either----------------------------------------
Newsgroups: sci.electronics
From: davec@ECE.Concordia.CA (Dave Chu)
Subject: RF noise generator circuit wanted
Organization: ECE - Concordia University
Date: Tue, 5 Jan 1993 23:46:37 GMT


I'm looking for a simple circuit that will generate RF noise from
25-75Mhz.  I was thinking of using a series of 2N222's as class C amps,
and tune each of the amp at 10 or 15Mhz apart to cover the 25-75Mhz
range.  I am palnning to use this circuit to jam RC or any types of
remote controlled cars.  The noise level should be large enough to 
interfere with the operations of the remote controlled car at a distance of
2-3 meters relative to the noise maker.  I would greatly appreciated if 
anyone have any other ideas or circuits to generate RF noise.

Dave
                                          |\ |     | |                       
___________________________/\  /\  /\_____| \|_____| |_____    ___  ___  ___
  Dave Kai-Chui Chu          \/  \/       | /|     | |        |    |    |
  Dept. of Elec. & Comp. Eng.             |/ |     | |        |--  |    |--
  Concordia University               Voice:(514)848-3115      |___ |___ |___
  1455 de Maisonneuve W. H915        Fax:  (514)848-2802
  Montreal, Quebec, Canada H3G 1M8   Email:davec@ece.concordia.ca
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Newsgroups: sci.electronics
From: cmwolf@mtu.edu (christopher m. wolf)
Subject: HDTV Question
Organization: Michigan Technological University - Hell on Earth
Date: Fri, 8 Jan 1993 05:56:18 GMT

If HDTV will be digital, what will be the number of available colors for
display?

Instead of the "infinite" we have with NTSC now, this will have to be reduced,
depending on the digitalization, but what are we talking about numbers-wise?
From: whit@carson.u.washington.edu (John Whitmore)
Newsgroups: sci.electronics
Subject: Re: "1-bit DAC"
Date: 7 Jan 1993 20:52:52 GMT
Organization: University of Washington, Seattle
NNTP-Posting-Host: carson.u.washington.edu

In article <C0F8Hp.84n@ve7frg.ampr.org> doug@ve7frg.ampr.org (Doug Collinge - VE7GNU) writes:
>If my CD with a "1 bit DAC" and the aid of "8 times oversampling"
>can produce audio as good as an older CD with no "oversampling" and
>a 16-bit DAC then can my circuit with an 8-bit DAC be replaced
>with a 1-bit DAC and 4-times oversampling?

	Welcome to marketing buzzword confusion hour.

	A "1-bit DAC" is a sigma-delta D/A converter, and if
you want to use it for CD output, it has to be 16-bit capable.
Because, the input to it will be a 16-bit number, more than likely.

	There are no CD players that have 'no oversampling';
perhaps an early multi-kilobuck unit or two with no oversampling
were produced, but I've never seen one.  The first inexpensive
CD players ($500 and under) were all 2x oversampling, and required
modest hand-trimmed filters.  4x oversampling units don't require
any hand-trimming of the filters (perhaps simply selected components),
but the NON-oversampling units would have required immense, elaborate,
twenty-adjustment-knob filters (not feasible in mass production,
and NEVER inexpensive).

	An eight-bit DAC is rarely linear to 16-bit precision,
and will not successfully reproduce CD sound.  The 'one-bit'
approaches ARE intended to be linear to that full 16-bit
precision.

	John Whitmore



Newsgroups: sci.electronics,rec.games.programmer
From: dave@imax.imax.com (Dave Martindale)
Subject: Re: Sort of a Joke - sad though...
Organization: Imax Corporation, Mississauga Canada
Distribution: na
Date: Sun, 10 Jan 1993 04:14:01 GMT

cab@col.hp.com (Chris Best) writes:
>
>I still suspect that locating the "flying spot" 
>might be a bit difficult though, unless all three
>CRTs are perfectly synchronized.

Of *course* all three CRT's are perfectly synchronized - they are displaying
a picture that arrives as a single video signal.  Any error in synchronization
of the three spots on the projection screen will be visible as a colour
fringe (bad colour convergence).

So, if the projector provides a decent image on screen, then the three
spots have to be in the same spot at the same time, providing a single
target for the light gun.
Newsgroups: sci.electronics,sci.engr
From: darknite@camelot.bradley.edu (John S. Novak III)
Subject: Book club for EE
Organization: Bradley University
Date: 12 Jan 93 06:23:32 GMT


As a near-graduation EE, I have a vested interest in building up
a small library fairly quickly.

Can someone please recommend a good book club for electrical
engineers?  What I'm looking for is a club with reasonable
prices, with an opening deal which doesn't try to gut my
pocketbook with a "You must buy 5 books in twelve months" clause.

My interests range primarily in the communication and (digital)
signal processing areas, if that matters.

Reply by post or e-mail.  If there's interest, I'll post a
summary of mail responses.

Thanks,

--
"Don't worry, if I am teaching in a mathematics course, and they don't know
 how to derive that formula, I flunk them.  Don't worry, I'm teaching in an EE
 course, so if you don't know how to derive it, I just kill you."
          -Dr. Santiago Navaro, 02-07-92
John S. Novak, III		darknite@camelot.bradley.edu
Newsgroups: sci.electronics
From: lnosek@ux4.cso.uiuc.edu (Luke Nosek)
Subject: Re: Connecting multiple strobe lights
Organization: University of Illinois at Urbana
Date: Wed, 6 Jan 1993 07:27:06 GMT

andy@laguna.santafe.edu (Andy Mell) writes:

>In article <C0Bo01.Gus@news.cso.uiuc.edu> lnosek@ux4.cso.uiuc.edu (Luke Nosek) writes:
>>
>>	I have these three strobe lights and I want to make them flash
>>synchronously, with minimum interconnection. Here is the schematic -
>>I may have interpreted wrongly so feel free to tell me if something doesn't
>>make sense:
>>

>Commercial disco strobes do not work like this, if you have a chain of say
>200 strobe tubes around a dance hall they have to be easily triggered.
>If you want to maintain compatability with the industry you should allow for
>a cannon XLR connector on the back of your strobe, two - one for in and
>one for out  The strobe should be configured to flash on every single
>positive going edge recieved between pins 1 &2 on the XLR, max voltage is
>about 5-10 V, but not fussy. So you would need a circuit that discharges the
>tube on every 5V spike received.

	Unfortunately, this is the schematic of the strobe lights that I have to
work with. They are not meant to be interconnected - this is just a hack that I
want to do.
							Luke Nosek
From: edhall@rand.org (Ed Hall)
Newsgroups: sci.electronics
Subject: Re: 486DX2 Crystals
Date: 4 Jan 93 21:09:36 GMT
Organization: RAND

In article <1992Dec30.064222.9259@netcom.com> gerg@netcom.com (Greg Andrews) writes:
\walvdrk_r@research.ptt.nl (Kees van der Wal) writes:
/\I believe the book. The book say that symmetric waveforms have no even
\/harmonics, so the probably symmetric 25 or 33MHz clock has to be converted into
/\something asymmetric to be useful.
\/
/
\What does your book say about a Sawtooth (Ramp) wave?
/
\
/      /|    /|    /|    /|    /
\     / |   / |   / |   / |   /
/    /  |  /  |  /  |  /  |  /
\   /   | /   | /   | /   | /
/  /    |/    |/    |/    |/
\
/According to my reference, a Sawtooth wave has both odd and even harmonics,
\whose amplitude is inversely proportional to the harmonic number itself.

Quite so.  But a sawtooth wave is hardly symmetric.  Turn the picture
upside-down and you'll see--the ramp part now runs the other way.

A triangle wave, on the other hand, is symmetric:

	/\    /\    /\    /\
       /  \  /  \  /  \  /
	   \/    \/    \/

And, it has no even harmonics.  The absence of even harmonics in symmetrical
waveforms can be proven with fourier analysis.  (I'll save you the details,
but they aren't hard to look up.)

		-Ed Hall
		edhall@rand.org
From: behnke@FNALF.FNAL.GOV
Newsgroups: sci.electronics
Subject: Re: NEED SOLENOID ACTUATED WATER VALVE.....
Date: 7 Jan 93 14:53:10 GMT
Reply-To: behnke@FNALF.FNAL.GOV
Organization: Fermi National Accelerator Lab
NNTP-Posting-Host: fnalf.fnal.gov

In article <C0Eoqw.5Dq@techbook.com>, philb@techbook.com (Phil Biehl) writes:
>Hi. In examining my hydronic (hot water basboard) furnace, I find that
>it is divided up into three zones. What I'd like to do is put in
>electrically operated valves that controlled via a microcontroller and
>three separate thermostats, one for each zone. I need to find a source
>for these valves that will fit 7/8" copper piping. 12 Volt coils would
>be nice but not absolutely necessary. 
>

Try an appliance repair parts store.  Washing machines use these in great
numbers.

Mike Behnke
Fermi Nat Accel Lab
Batavia, Il

BEHNKE@FNALF.FNAL.GOV
My opinions are my own, and MOST of them don't mean a thing !

mb
Newsgroups: sci.electronics
From: arthurs@UPEI.CA (Hal Arthurs)
Subject: V40
Organization: University of Prince Edward Island, CANADA
Date: Tue, 12 Jan 1993 13:50:06 GMT

Can anyone give me any information, data sheets for the V40 processor?

I am interested in using it in a Digital Signal Processing (DSP) 
controlled modem for development purposes in amateur radio.

Replies to Seeler@Upei.Ca          Thank You


Newsgroups: sci.electronics,alt.radio.pirate
From: cthomas@athena.mit.edu (Michael T Ford)
Subject: Re: >= 5W AM-band amp design?
Organization: Massachusetts Institute of Technology
Date: Sun, 10 Jan 1993 06:33:05 GMT

In article <1993Jan10.005856.26077@sol.ctr.columbia.edu> svaldez@ocf.berkeley.edu (Steve Valdez) writes:
>   CVan someone point me to a source for a circuit design which
>   can take the 100mw output from my Panaxis AM transmitter (at 1500kHz)
>   and amplify it to somewhere between 5W and 20 or 30W?  
>   How does one create an amp in parallel to provide greater gain?
>   svaldez@sdcc13.ucsd.edu
>   svaldez@ocf.berkeley.edu

Hint #1:  Don't do it unless you are supposed to.  It sounds to me like
recreation and not research.  If you do do it, don't get caught.
I think that you are already running at right about the max. the FCC
will let you.

Mike WZ0C
From: mpaul@unl.edu (marxhausen paul)
Newsgroups: sci.electronics
Subject: Re: BASIC code the 8052 (summary of sources)
Date: 12 Jan 1993 16:16:44 GMT
Organization: University of Nebraska--Lincoln	
Distribution: world
NNTP-Posting-Host: unlinfo.unl.edu
Keywords: BASIC Microcontroller 8052 Intel

Important addition to your list of sources for BASIC in the 8052/32:

Intel's assembler source code for their floating point BASIC found in
the 8052AHBASIC (Version 1.1) is also available by anonymous ftp from
at least two network archives:

abdallah.cd.chalmers.se	(129.16.79.20)
lyman.pppl.gov		(192.55.186.129)

At both sites, the code is found in the /pub/8051 directory.  The files
are:

BASIC-52.ZIP
BASIC31.ZIP

One is the full-blown 8052 floating point version: the other is a stripped-
down version that allows it to work with an 8031.  Better yet: the stripped
down version comes with the compiled Intel hex file, so all ya gotta do is
load it into an EPROM, no compiling needed!  the source code given can be
compiled with other tools that are available from various sources - there's
enough information given to get you going with these.  

--
paul marxhausen .... ....... ............. ............ ............ .......... 
 .. . .  . . . university of nebraska - lincoln .  . . .. . .  .. . . . . . . .
 .     .    .  .   .     .   .  .    .   .  .   .    .   .  grace .   .    .  . 
   .         .       .      .        .        .      .        .   happens .
From: forbesm@atlantis.CS.ORST.EDU (Mark Forbes)
Newsgroups: sci.electronics
Subject: Re: help with Novatel cellular phone
Date: 10 Jan 93 04:43:47 GMT
Distribution: sci
Organization: OSU CS Outreach Services, Corvallis, Oregon
NNTP-Posting-Host: atlantis.cs.orst.edu

kingpin@spiff.gnu.ai.mit.edu (Joe Smooth) writes:


>Hi I need some help identifying the microprocessor used in a Novatel
>transportable cellular phone I have.. on the microprocessor chip itself,
>it says the following:

>	9049AV Z90071
>	VC5055-0001
>	Novatel 1CPU

Looks like an ASIC to me. It's probably a mask-programmed CPU core with
tiled glue-logic scattered around it. Check any of the major CPU makers
for standard-cell . That's probably what they're using.

By the way, if you're trying to hack it to change the ESN, don't. My
wife, who sells cellphones for a living, was telling me about some of
the interesting new ways they have to detect illegal reprogramming, and
the delight they take in tracking down such folks.

If it's just blown, and you're trying to do a cheap fix, I think you're
out of luck. Unless you want to reverse-engineer it and buy 100K pieces.
:-) :-)

Mark G. Forbes | forbesm@atlantis.cs.orst.edu
From: ah499@cleveland.Freenet.Edu (John Daniels)
Newsgroups: sci.electronics
Subject: Composite video from Atari 2600/7800?
Date: 11 Jan 1993 04:03:06 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: slc10.ins.cwru.edu


I've noticed in an opened 7800 that there is a small, shielded box on the board
that appears to be the RF modulator section of the circuit.
 
Has anyone tapped into the video before the RF modulator to feed directly into
a composite monitor?  If so could they post descriptions and/or schematics of
the modification?
 
I'm an Apple II user so I have a number of composite monitors around and it'd
be nice to have the Atari usable while the TV is in use.
 
                                                John Daniels
                                                ah499@cleveland.freenet.edu
From: jeh@cmkrnl.com
Newsgroups: sci.electronics
Subject: Re: Lasers (was: laser gunsights)
Date: 10 Jan 93 08:33:02 GMT
Organization: Kernel Mode Consulting, San Diego, CA

In article <1993Jan9.135624.9035@doug.cae.wisc.edu>, kolstad@cae.wisc.edu 
(Joel Kolstad) writes:
> In article <1993Jan9.122133.46254@kuhub.cc.ukans.edu> wellison@kuhub.cc.ukans.edu writes:
> 
>>As with ANY laser light source, the power
>>is concentrated into a very tigh beam.
> 
> No, only a laser with some optics attached will have the power concentrated
> into a very tight beam.  Lasers with no optics whatsoever have a very
> diverging beam.

I'm not sure what you mean by "lasers with no optics".  If it doesn't have
mirrors, e.g. a diode laser, you're right.  

If you mean a conventional laser with flat mirrors but no exterior lenses,
typical beam divergence is down in the one or two milliradian range even for
small, inexpensive HeNe "experimentor's" lasers, such as you find in the Edmund
Scientific catalog.  If you want to consider this "very diverging", fine, but
it isn't a use of the term that many other people will understand. 

If by "no optics whatsoever" you mean not even mirrors, then in my book you
aren't talking about a laser.  (Experimental units have been built that rely
on single-pass gain, but mostly just to prove that it could be done.)

(The Edmund Scientific catalog is not a particularly good place to shop for
lasers, but it is something that you are likely able to find even if you
don't know much about lasers... which certainly seems to be the case.) 

	--- 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
Xref: sparky sci.electronics:22024 rec.games.programmer:5279
From: behnke@FNALF.FNAL.GOV
Newsgroups: sci.electronics,rec.games.programmer
Subject: Re: Sort of a Joke - sad though...
Date: 5 Jan 93 21:06:14 GMT
Reply-To: behnke@FNALF.FNAL.GOV
Distribution: na
Organization: Fermi National Accelerator Lab
NNTP-Posting-Host: fnalf.fnal.gov

In article <1993Jan5.200745.27696@magnus.acs.ohio-state.edu>, cwatters@magnus.acs.ohio-state.edu (Coyt D Watters) writes:
>While working at a large retail store this Xmas (why?  the ca$h), I 
>overheard a customer telling another sales associate that Nintendos should
>not be sold, "because they kill the color from your tv, starting with the
>weakest."
>


What's the name of this sorry a**ed store.  If they have any stores in the
Windy City area, I'll be sure to steer clear.  No reflection on you though !!

Mike Behnke
Fermi Nat Accel Lab
Batavia, Il

behnke@FNALF.FNAL.GOV
My opinions are my own, and MOST of them don't mean a thing !

mb
Newsgroups: sci.electronics
From: cmwolf@mtu.edu (christopher m. wolf)
Subject: Re: Power Inverter Problems (12VDC to 117VAC switcher)
Organization: Michigan Technological University
Date: Tue, 12 Jan 1993 22:54:20 GMT

keithl@klic.rain.com (Keith Lofstrom) writes:
>Many power inverters are square wave output, and designed to drive loads
>like computers that have diode bridges followed by capacitors.  Square
>waves of uncertain frequency are peachy keen for this application.
>Note that a square wave that is 170V peak is going to produce twice as
>much RMS power than a sine wave that is 170V peak; hence the loading
>problem with a light bulb.  You will probably get 200 watts out of a
>100 watt bulb - for a while.

Don't they usually use a square wave such as:

  ____      ____
  |  |      |  |
---  ---  ---  ---  ---
       |  |      |  |
       ----      ----

with delays between the pulses.  This can be arranged to give an RMS
that is equivilent to the wall socket.

Newsgroups: sci.electronics
From: fuer@nessie.gud.siemens.co.at (Gerhard Fuernkranz)
Subject: [Q] Spice sources ?
Date: Mon, 11 Jan 1993 16:02:31 GMT
Organization: SIEMENS Austria Corp., A-1100 Wien, Gudrunstr. 11
X-Newsreader: Tin 1.1 PL5

Does somebody know, wheter the circuit simulator SPICE is
free software ?
If yes, where can the sources be obtained ?

Thanks in advance

g.f.

--
Gerhard Fuernkranz		SIEMENS Austria Corp.
Email: fuer@siemens.co.at	Gudrunstr. 11
Phone: +43-1-60171-5716		A-1100 Wien
From: krouth@slee01.srl.ford.com (Kevin Routh)
Newsgroups: sci.electronics
Subject: Book on Electrical Wiring?
Date: 12 Jan 1993 14:35:44 GMT
Organization: Ford Motor Company Research Laboratory
NNTP-Posting-Host: slee01.srl.ford.com
X-Newsreader: Tin 1.1 PL5

Hi,

Could anyone recommend good books on electrical wiring (for a house,
etc)?  

I would like to get one that have good illustrations and conforms to
some standard code (if there is such a standard).  I realize there may
be local variations to the code.  I am interested in learning the proper
techniques and having a reference for making electrical improvements in
my house.

Thanks.

--
Kevin C. Routh                     Internet:    krouth@slee01.srl.ford.com
Ford Electronics                   IBMmail (PROFS):               USFMCTMF
ELD IC Engineering
17000 Rotunda Drive, B-121         Voice mail:              (313) 337-5136
Dearborn, MI  48121-6010           Facsimile:               (313) 248-6244

Newsgroups: sci.electronics
From: dannyb@panix.com (Daniel Burstein)
Subject: Re: What really Failed on Fluorescent Lamp
Date: Mon, 4 Jan 1993 22:57:24 GMT
Organization: Panix, NYC

to the person who had the ballast burn-out problem.

Keep in mind that early (pre 1965?) ballasts may have had PCB laced
insulation inside, so be CAREFUL with the material.

While I have sever doubts about the validity of the scare stories about
PCB's, it never hurts to wear gloves, etc...

-----------------

As long as you're replacing the unit, you might want to check out the
high-frequency ballasts that have recently become available.  Rather than
use the line frequency, which can leave your flourescents with a noticable
flicker (especially when you're using them around electrical equipment),
these are in the khz range, tend to be smaller and lighter, and
(supposedely) use less power than the more traidtional units.

(remember, the lamp may use 40 watts, but the ballast will also use a bit
of energy....  typically about 15% of the lamp rating)

dannyb@panix.com

From: joeld@hpnmdla.sr.hp.com (Joel Dunsmore)
Date: Wed, 6 Jan 1993 04:37:31 GMT
Subject: Re: Grounded Emitter Amplifier Query
Organization: Hewlett-Packard, Santa Rosa, CA
Newsgroups: sci.electronics

From Experience:

     The temperature dependence of Is is the key, and the bad thing it
does is called thermal runaway.  With a good transistor curve tester, this
is easy to see.

     In  very basic language, as the temperature goes up, so does the
collector current, even for a constant base voltage.  As the current goes
up, so does the power dissipation.  As the power goes up, so does the
temperature. As the temperature goes up .....

Been there, not good.
From: rlp@bsu-cs.bsu.edu (Ralph L. Place)
Newsgroups: sci.electronics
Subject: Cellular telephone operation
Date: 11 Jan 93 13:15:19 GMT
Distribution: usa
Organization: CS Dept, Ball St U, Muncie, Indiana

I have a question about the operation of a cellular phone.  Does the
phone transmit an identification signal when not being used or is it just
sitting passively listening?  The reason I am asking is that I am interested
in a 'transportable' phone for my car, but I am concerned about sitting
in an enclosed metal space with a near-microwave transmitter next to me if
it is constantly radiating when plugged in and turned on.  (Admittedly the
power is quite low, but travelling in the car for hours a day, five days
a week - I wonder what the effects of long-term, low power exposure are,
especially to the eyes?)

R. Place
rlp@bsu-cs.bsu.edu