waashk/20ng huggingface dataset:
ragee@vdoe386.vak12ed.edu (Randy Agee) writes:  >It used to be that the only way the law could be enforced was for >an officer to actually see the radar detector.  Not any more!  Many >law enforcement agencies are now using radar detector detectors.  >Right, a super sensitive receiver that is capable of picking up RF >from the radar detector itself.  My first reaction was "no way!"  >But, guess again, these little buggers really work and the police >are writing citations right and left for people using radar >detectors.  One news story quoted an officer as saying that he had >found the radar detector in all of the cars he stopped except one, >and he could never figure out where it was - but he knew it was >there.  This tends to make one assume there are few false arrest.  From what I understand about radar dectectors all they are is a passive device much like the radio in your car.  They work as an antenna picking up that radar signals that the radar gun sends out.  Therefore there would be no way of detecting a radar detector any more than there would be of detecting whether some one had a radio in their car.
In article <1pslckINNmn0@matt.ksu.ksu.edu>, nhowland@matt.ksu.ksu.edu (Neal Patrick Howland) writes... >  >From what I understand about radar dectectors all they are is a passive >device much like the radio in your car.  They work as an antenna picking >up that radar signals that the radar gun sends out.  Therefore there would >be no way of detecting a radar detector any more than there would be of >detecting whether some one had a radio in their car.   >  From my rather rusty knowledge of radio, most radio receivers use a superhet  circuit, so that the incoming signal is mixed with a local oscillator, giving  a fixed intermediate frequency (IF) that is more easily amplified. The detector detectors work by picking up IF re-radiated from your radar  detector. In Britain, where one has/used to pay for a TV licence, there  are/were TV detector vans prowling the streets, looking for people who hadn't  paid their licence fee. They had a couple of long solenoid antennae on the roof, and I believe could triangulate an operating TV from the IF.   I wonder how much of the IF is radiated back from the detector antenna, and  how much from the rest of the module. It might be worth putting the detector  in a proper RF shielded enclosure.
In article <20756.2bd16dea@ecs.umass.edu> alee@ecs.umass.edu writes: > >Greetings! >       >        Situation:  I have a phone jack mounted on a wall.  I don't >                    know the number of the line.  And I don't want >                    to call up the operator to place a trace on it. > >        Question:   Is there a certain device out there that I can >                    use to find out the number to the line? >        Thanks for any response. >                                                    Al > >    Do you get a dial tone when you plug a phone into the jack??  If not, then the line is possibly disconnected from the nearest telco junction box. If you do get a dial tone, then surely the telco is sending a bill for the line to *someplace* or *somebody*. Are you sure that what you are doing is on the level. Sounds to me like you are just trying to get  at somebody's unlisted number.  Fess up.  Keith
Hello,  Can somebody tell me what kind of MOV's are most useful for a computer surge protector?  Radio Shack have 2 types, both rated 130V, one for a 10A current and the other for 20A.  On the other hand, commercial surge protectors I have seen claim a clamping voltage of 330V-400V, which SEEMS to me in imply a rated voltage of about 250V (250V * SQRT(2.)=353).  What is the right kind?  While at it, ow important is really the EMI/RFI module?  Is there really any noticable level of such noise in the power line?  Please-  E-MAIL to me, as this group has too much volume for me to be able to follow.
In article <34T302tW40N601@JUTS.ccc.amdahl.com> dws30@p1hdb01cd.amdahl.com (David Sharpe) writes: > > Pink Noise and White Noise are equal amounts of all frequencies.  This >is in most cases around the 20-3.3K Hz range.  Pink/White are used to >adjust for room dynamics and stuff like that.  There are a few EQ's out >on the market that have Pink noise built in.  Most all from Audio >Control have them I know the C-101 does.      With regards to what you wrote, how does one "adjust for room dynamics  and stuff like that"?  I asked a professor that question just last week and he didn't really know himself.  Since pink noise is believed to be due to surface states (say, the surface of the Silicon where there's a lack of a covalent bond) that act as "traps" to nearby elecrons, and since this happens at low frequencies (because at high frequencies they aren't able to "trap" electrons), how do you compensate for that?  It seems to me that you wouldn't be able to compensate for pink noise.  I have seen the "pink noise" feature, however, on many EQs, and I was wondering how they are suppose to compensate for noise when pink noise is not due to "man made noise" like power lines, crosstalks, coupling, etc.  If you have any information about this, it would be appreciated.  Hope this didn't sound too drawn out.  Thanx.
In article <93110.125951PCA103@psuvm.psu.edu> <PCA103@psuvm.psu.edu> writes: >Does anyone know what processor the Atari 2600 used? What I'm looking for is th >e pin-outs for the Atari 2600.... the schematics for it it... does anyone have >any idea where I could find this or any related information? This is very impor >tant. Also, are the ROM chips that were used fo rthe 2600 games still available >, or were they propreitary? Please email me with any responces, as this is very > important.. Thanks a million... > >BTW- Anyone who works/has worked for Atari, I could really use your help with i >nfo on the old 2600, please email me if you are willing to help me.... thatnks >alot!! > >-Peter  The Atari 2600 used a 6502 CPU, just like their entire 8-bit line (400, 800,1200,1400, 1440, 130xe, 65xe computers, as well as the 5200 game machine). The 2600 had some extra ASIC chips that were basically modified graphics chips and PIA's for the joysticks. Later model 2600 might have incorporated many of the chips into one ASCI, as the weight of the machines and part count decreased a lot over the years.  Additionally, I think the 2600 used 2K, 4K, and up to 8K of ROM for their games. I have no idea how much RAM it had to work with, but I would hazard a guess of 2 or 4K RAM. Think comes from a lot of hacking with the 800 and 130xe computers. And occasionally hacking with the 2600 (fixing it for monitor composite video use, and audio hookups). Also I tryed to make a cartridge-less system that stored the ROM into a RAM cartridge that could be loaded up at some prior time (a way to backup cartridges). I've heard of a setup like this where games could be bought (cheaply) on FSK-recorded tapes, then you would load them into a special RAM cartidge, and play them.  Anyways, if you're interested in looking for 2600 equipment, we've got two 2600 machines around (one composite A/V modified), and lotsa cartridges. Willing to sell for reasonable offer + shipping and handling. Don't play it anymore, since going to computers + Nintendo (interested in that too?).
Try the folks at Dimolex Corp., La Crescenta, CA 91214. Their number is (818) 957-7001.  They make membrane keypads that are very flat, in layouts from 2 to 128 keys.  They have standard models, tactile models (with stainless domes under each key to make a 'click' you can feel), as well as backlit models.  Some of them can even be cut with scissors to form a funky shape other than a rectangle.  Many of the models are available in a 'kit' which includes a bezel, colored and plain key covers, and rub on lettering to make your own layout.  One piece prices aren't cheap, though, as they want $10 for one four position pad *kit*, and $45 for a 40 position *kit*.  I have no affiliation with Dimolex or any company connected with them.  I *have* purchased a couple of keypads from them, and am pleased with what I got.
It is illegal to use anything you eavedropped on for a business  or for an illegal use.  Jurisdictions that ban radar detectors or police monitors, are essentially making the claim that there is no other reason for a radar detector or police radio monitor.   The results of fighting these claims in courts have been mixed. The federal courts are not anxious to intervene and state courts have sometimes held that the feds have exclusive jurisdiction and sometimes they have not.  A lot of state courts do not have enough imagination to see any use for a radar detector besides avoiding law enforcement action for speeding.  When you buy a radar detector, amongst the guarrantees, instructions,  explanations, and other detritus, is an invitation to join an association dedicated to preserving your right to use a radar detector. (I promise I am not making this up!)  I do not think radar detector manufacturers would be making any  headway at all in courtrooms if police departments enforced speed  laws with a strict eye to public safety and a blind eye to the fund raiser aspect of tickets.
Hi, 	Just a quick question.  What standard lab solvents can be used to clean electronic equipment and components safely (ie not corrode, dissolve, short-out, etc the equipment)? 	water?	:-) 	methanol? 	CCl4? 	etc? I am not an electronics type (surprise, surprise), and I want to avoid using freons.
In article <1993Apr20.022922.11861@julian.uwo.ca>, wlsmith@valve.heart.rri.uwo.ca (Wayne Smith) writes: |> In article <1993Apr19.231050.2196@Rapnet.Sanders.Lockheed.Com> babb@rapnet.sanders.lockheed.com (Scott Babb) writes: |>  |> >No restriction was placed |> >on receiving RADAR (or, curiously, cordless phones.)  Enforcement |> >of the Virginia law is in violation of the FCA of 1934. |>  |> Isin't there some kind of rule (regulation, law, whatever) in some |> juristictions that prohibit the use of *police band* recievers |> in vehicles?  And that radar transmissions are included in the police band  |> so they get covered by the same regulation?  What do you mean by "police band" - there is no such thing.  Anyway, radar detectors work in shared bands. If you applied your test, all of those radar operated door openers in malls would be illegal.  One of the great problems here is that there are too many ill-educated (read illiterate) people making too many laws about subjects on which they are incompetent - there may well be laws refereing to "police bands", they are almost certainly local in scope (state or county) - created by well-meaning, but incompetent idiots.  Unfortunaltely, laws do not have to be sensible (or even enforceable). Lawmakers exist to pass laws - and will continue to do so, until the day where you are faced with death for not doing X, and amputation of all your limbs for doing X ... the choice will be yours.  Note: no smiley.
While driving through the middle of nowhere, I picked up KNBR, AM 1070, a clear-channel station based in Los Angeles. They had an ad  claiming that they were able to get traffic flow information from  all of the thousands of traffic sensors that CalTrans has placed under the pavement. Does CalTrans sell this info? Does KNBR have an exclusive? What's the deal?
Hi people..  OK heres my problem....  I keep hearing about these little credit card type of things which detect IR light....  I believe that you have to 'charge them up' under normal (visible) light and then if they are exposed to IR light they glow or something like that...  I think that they are avaliable in the states and even in England, but alas I live in Australia.  Could someone please inform me if I can get these things over here, and if so where??? and how much???  Also are they really commonly avaliable in the states, and if so, then how much are they and who sells them (maybe if I cant get one here, I'll write to one of the companies over seas..)  Anyway.... Thanks in advance...
In article <1qk724INN474@hp-col.col.hp.com> cab@col.hp.com (Chris Best) writes: >I'm no expert at UPS's, but you said something that made it sound like >you didn't realize something.  On a typical UPS (well, on ours, anyway), >there is NO switchover from AC to DC.  All the protected equipment is >ALWAYS running from the batteries (via an inverter), with the usual  >condition of also having them on charge.  If the power fails, big deal -  >the computers never see it (until the batteries start to droop, but  >there's something like 60 car-sized batteries in that cabinet, so it  >takes a while). > >If you were gonna run the guts on straight DC instead of an inverter, >why not do it all the time?  Then there'd be no switchover to screw >things up, and no having to sense the failure fast.  Just keep the DC >on charge when the power is on, and it'll be there in zero time when >you "need" it. >  Actually, it's a bit more complicated than that...I sounds to me, your UPS takes in AC, rectifies it to DC to charge the batteries, and then takes the battery DC and chops it to AC again, feeding your equipment.  This approach is the easiest and cleanest way to switchover from the mains to battery once your power kicks out since, as you mentioned, nothing will know about what happened down the line.  Another way to do the UPS scheme is to use the mains until you lose power, and then kick in the battery backup with it's inverter to replace the lost power.  The problem here is the switchover time and you've got to resync the AC in no time flat.  Unfortunately, most everything is built around the assumption that AC is available, so the UPS guys have to provide and AC output to be usable...ya sorta have to make it work with what there already.  Similar story with our telephone system.  It was first invented back in the 1800's.  We're still using the same damn system (media) as they did back then.  If I have a phone from back then, I can assure you it'll work on today's phone system.  It costs too much to overhaul everyone to a new system, so they make it work with what is out there.
Well, I'm not too sure if this would be the right place to post this, but anyway, here goes:  I was just noticing that some of the current bubblejet printers offers up to 360x360 resolution while a lot of lower end laser printers only offer 300x300.  However, the laser printers still seems to be significantly pricier than the bubblejets... how is this?  Or am I missing something about the resolution thing?
Hi, 	I am looking for a very high speed  D/A converter (at least 8bits and 150MHz) for a research application. A paper in  the January issue of IEEE Solid-State Circuits mentions a  GaAs, 1GHz, 8bit DAC - anyone know where I can find such a thing? Even a somewhat slower Si DAC would do. 	Needless to say, I have looked in all the conventional places (Vitesse, Motorola, National, etc. etc.). Any pointers would be appreciated.
One thing to consider is time division multiplexing the EMG channels to reduce the number of RF carriers you have to generate. If you multiplexed the EMG inputs at 10KHz, that would probably be sufficient for most physiology studies (you'd have ~ 330 Hz per channel sampling rate.)  That level of analog multiplexing should be rather easy to accomplish.  Combining a lot of RF carriers is pretty tricky to do without generating intermodulation.  A system to be carried by a runner is in a fairly harsh environment and would probably be difficult to keep balanced.  A commercial hand-held transciever could probably be employed with a little modification to accomodate widening the bandwidth. Obviously, this has to be done in accordance with whatever laws govern the use of transeivers in your location.
In article <1993Apr27.080115.22046@vd.seqeb.gov.au>  writes: > I am trying to design a small 90mW 472MHz FM transmitter for remote alarm > use. >   Pretty high frequency for one chip...  > Is there an FM transmitter IC available that can be used for this purpose? >  > Any help, circuits, info etc will be greatfully accepted. >  > Please reply to bsc_graham@seqeb.gov.au >   Yes and no. I would use the FM transmitter chip from Motorola (Linear and   Interface Databook), a stable cristal oscillator and a mixer (e.g. SBL-1 from   mini circuits lab). Everything is done in the FM chip and then mixed up with   the oscillator frequency. Just have a look at the ARRL Handbook. There are lots   of ideas in there about oscillators and mixing. I don't think, there are single   chip designs for such high frequencies yet.  > Thanks in advance. >  > Graham Castledine.  Cheers   Robert HB9NBY
In article <1ql7ug$i50@sunb.ocs.mq.edu.au> johnh@macadam.mpce.mq.edu.au (John Haddy) writes: >In article <120466@netnews.upenn.edu>, jhaines@eniac.seas.upenn.edu (Jason Haines) writes: >|>  >|> 	I was wondering if people had any good uses for old >|> 256k SIMMs.  I have a bunch of them for the Apple Mac >|> and I know lots of other people do to.  I have tried to >|> sell them but have gotten NO interest. >|>  >|> 	So, if you have an inovative use (or want to buy >|> some SIMMs  8-) ), I would be very interested in hearing >|> about it. > >The most practical use I've seen for them is as key ring ornaments :-) > >JohnH  I used a bunch as weights, when building a model airplane.  Hung them on the stringers, across the stringer, or whatever.  Worked pretty well.
In article <7480224@hpfcso.FC.HP.COM> myers@hpfcso.FC.HP.COM (Bob Myers) writes: >situation sometimes called "block" sync).  You can generate such a combined >(or "composite") sync in two simple ways - OR the H. and V. syncs together, >which gives you the non-serrated "block" sync, or EXOR them, which makes >serrations.  (Try it!)  Actually, the EXOR doesn't really do kosher serrated >sync, since it puts the rising (and falling, for that matter) edge of the H.  >sync pulse off by a pulse width.  But that usually makes no difference.  Sometimes.  It depends on your monitor and your timing.  If you don't have enough vertical front porch and you use XOR composite sync you can get even/odd tearing at the top of the screen, which is very sensitive to the HHOLD control.  It looks like what you would expect if you scanned the even fields (say) onto a sheet of mylar and had pinched the upper left corner with your fingers and started to tear it off the tube.  With proper composite sync (equalizing pulses) the interlace is rock solid.
kolstad@cae.wisc.edu (Joel Kolstad) writes:  >One other thing... there are bubblejets, and then there are BubbleJets. >There are a few bubblejets out there that produce rather mediocre output >(such as HP's dinky little BubbleJet), whereas most produce really good >looking output (such as HP's DeskJets).  IBM and Canon both produce some of >the really good style bubblejets.  >P.S. -- If you're in the market for a portable bubblejet printer, I can >highly recommend the HP Portable DeskJet, although I've heard the portable >Canons are good too (I needed PCL support, myself).  With the DeskJet >Portable, you even get an undocumented PCMCIA card slot!  I second that suggestion.  Although I don't own the HP Portable Deskjet, I *do* own the HP Deskjet 500.  It gives the nicest outputs, with only a minor loss of quality.   For all intensive purposes (papers, letters, resumes), I treat my Deskjet like a laser printer (You *do* have to look a bit closely to see the blurs in the characters).  Only one grudge, the ink that HP gives you does smudge rather quickly in the presence of moisture (Even though the ink is waterproof).  However, you would have to spend about $500 more for laser quality.  The cannon bubblejets are nice, however they don't seem to have as much support (eg: drivers for popular programs) as the HP ink-jets. Also HP Deskjet (regular,plus,500,500c) accepts xerox paper (I believe that the cut-sheet feeder is an option for the cannon bubblejet).  If you don't mind refilling your printer with cheap ink (say fountain-pen ink), then the HP deskjets are *very* cheap to maintain (I paid $3.50 for my last bottle of ink and I expect it to last 9 months).   	-Kimball (who doesn't work for HP, but just loves his printer 		  very much!)
In most areas of the country, serviced by ESS (or CESS), your phone --
I need the specs on various eprom data formats such as Intel Hex, Motorola S JEDEC etc.   Can anyone out there provide such info or a pointer to it? The one I want the most is Intel Hex.
In <1993Apr26.163640.27632@csus.edu> kschang@sfsuvax1.sfsu.edu (Kuo-Sheng (Kasey) Chang) writes:  >In article <Apr23.223805.66909@yuma.ACNS.ColoState.EDU> >jmiller@terra.colostate.edu (Jeff Miller) writes:   >>In an earlier article Kasey Chang wrote:  >>: Nothing, but if you read my WHOLE suggestion, I'm saying that you register >>: via MAIL by mailing in your registration card, THEN the company send you >>: the patch which includes the info you put on the registration card.  >>The problem with this scheme, is that when I buy a game, I want to play it >>*THAT* day...mailing a card to and from California would probably take a week >>or more.  >I didn't say the program is DISABLED, did I?  (I HATE!!!! it when people >take my words out of context...)  I mean that once you have installed it, >you cannot DEinstall it without registering it, or transfer it to another >machine, or SOME SORT OF LIMITATION (the author will decide), WHICH WILL >BE REMOVED WHEN THE PROGRAM IS REGISTERED.     WHAT??!!!!  You can't remove it, unless you register?   You gotta be joking, right? What happens if I get a demo-version of that program, install it, and then decide that I don't like it.  Do I have to register to be able to get rid of it?  (Hell, no, that is the last thing I would think of!) If that is what you mean, then you would better make pretty sure, that a statement to that effect is printed loud and clear on the package!   A better way to implement the above mentioned scheme is (IMHO) to allow anyone to install the program, but if they register, they get some additional features enabled.  It could mean only one new .EXE file needed to be copied, to have got the full-version of the program. Of course anyone is _free_ to _delete_ or _remove_ that program at whatever time they like.  Still, we face the trouble of 'moving' the new .EXE file around.  That could be solved by having the user registering him self, and get back a specially marked for him (or her) a new .exe file.   As for some sort of limitations, here are some suggestions: Limit the size of data that the program can work with, Disable saving the data, Print it out with some defects in the output (but be sure to mark them as such) Let some pop-up screen appear for ca. 10 secs. when the program is started and/or exited  etc.... but DON'T have it that you _must_ register to be able to remove it.