How can I make my own RADAR at home?
370212
Simple. Grab a stopwatch. Go outside. Yell, and measure the time for the echo to return to you.  Now, use the formula Mach*T/2 to find your distance from the wall.\n\nBeyond that, the Joint Spectrum Center & FCC probably have issues.
681738
Not unless you have radar absorbing paint which the government would love to have too.  I was picked up on a 10 speed bike trailing all kinds of foil to mask me but I was still picked up and clocked by police radar gun.  If you find a way post it.  I want to know that trick.  You can overload them with powerful transmitters, the radar reads false speed like 200mph which is not reliable for court,especially when I drive a 1972 VW bug, but they are illegal.  Plans on Internet and part from Radio Shack
640638
get a scanner, once you install the software it will walk you through  every aspect.
602258
iiDO YOUR OWN HOME WORK!!
930577
Follow this link - \n\nhttp://www.d-lusion.com/News.html\n\nDrumstation is free, loads of kits as well if I can remember. If this does not fit the bill then I have no idea what you are talking about.
141747
I would recommend the products of the following company.\nThey meet your requirements of monitoring pc activity and being undetectable.\n\nhttp://www.spectorsoft.com
607361
Actually NOAA has quite a handful of planes with high-quality radar, and they do use them in such projects.  I direct you to http://www.stormresearch.com/vortex/ for one such project, and http://www.ucar.edu/communications/newsreleases/2002/ihop.html for a more recent project on rain.\nI am currently related to a project looking at some high resolution Dopplar data from a hurricane a few years back while it was over the ocean.\n\nRegular WSR-88D Dopplar (the network the NWS uses) is decently effective at general alerting to possible tornadic storms... and it would be extremely expensive to send planes out all the time just for warning purposes (though there is a new test-project to setup a larger network of low cost radars to improve warnings a lot (http://www.casa.umass.edu/)).\n\nBut there are some things regular 88Ds can't give us, including:\n- better time and spatial resolution of features (we want to be near a tornado to get a more precise view of what it looks like, and WSR88Ds only update something like every 5 minutes because they scan the entire 360 degree sky)\n- the vertical wind fields.  You need at least two properly located radars to get the full 3-dimensional structure of winds... and this is crucial to understanding what's actually happening in a storm.\n\nSo, yes, portable Dopplars are very useful.  They also help us look at weather in places where we don't/can't have any fixed radars (like at sea or in mountain ranges).\nGenerally, portable radars on trucks will get us the same information, are much cheaper (and safer) to transport, you don't have to worry about removing the motion of the radar (planes are moving, trucks can be stopped), and you don't have as much trouble with beams hitting the ground... and thus most of our tornado information comes from truck-mounted radars like the famous Dopplar on Wheels (http://aaron.ou.edu/dow/dow.htm).  However, there are some reasons to use planes even in such experiments, including better upper-level resolution, the ability to reposition quicker, and the fact that trucks can only hold and power radars that are a cerain size.\n\nPlanes are indeed useful, and hopefully we'll continue to get better ones for research... as they really can provide quite a great suite of information (dropsondes (weather sensors that are dropped from airplanes) are also great because they give a rather quick profile of the atmosphere)!\n\nAwesome question!\n\nHope I helped answer things,\nGod bless,\nShane
1010147
I MAKE MY OWN WITH A COMPUTER PROGRAM
397942
Air and Spaceborne Radar Systems - An Introduction \nBy: Lacomme, P.; Hardange, J-P.; Marchais, J-C.; Normant, E. © 2001 William Andrew Publishing/Noyes; This book focuses on the history, main principles, functions, modes, properties, and specific nature of modern airborne radar.\nhttp://www.knovel.com/knovel2/Toc.jsp?BookID=262\n\n\nRADAR SYSTEMS\nENGINEERING HANDBOOK\nhttps://ewhdbks.mugu.navy.mil/
220608
Use radio blog it is free... and you can  build your own log as well. Just go to google or yahoo search engine and type in radio blog. It's totally free.
1125761
I suppose the equipment would depend on what frequency of the wireless signals you want to capture.\n\nFor wireless network signals het a 802.11 card and download netsumbler and drive around. there is another program you can use but i can't remeber it's name.\n\nMaybe you should try searching sites that sell spying/survalience equipment.
342575
Here dude http://www.ac6v.com/antprojects.htm This has a list of antenna projects you can do. Hope it helps!
811566
Always look for sites and/or groups/lists/forums that are operated by persons in the area.\n\nDon't get fooled by sites which slurp up data from others and post it as their own.\n\nAlso Radio Shack is CLUELESS! You purchase a unit from them and then get the real info you need. The guides included with RS and Uniden/Bearcat are OUTDATE and FLAT OUT WRONG in a LARGE portion of the data they contain.\n\nLook at:\nhttp://groups.yahoo.com/group/Socal-Scanner/\n\nhttp://groups.yahoo.com/group/CaliforniaOnlineScanning/\n\nOne, if not the BEST site for Southern CA is:\nhttp://www.freqofnature.com/\n\nCheck to see if they cover down to San Diego.\n\nAs for scanners and their use, owner ship and crimes.\n\nSeveral states have laws which prohibit use of scanners in vehicles and/or on your person (IN law prohibits carrying a scanner, unless its changes just recently.) FL is so draconian it could apply to the UPS truck delivering it to your home.\n\nUsing a scanner in the aid of crime is a federal offense, and theres ways to make state laws apply too. It rightfully is one.\n\nUsing one in your home, auto, or carrying for personal use is not an issue unless your local area has laws which prohibit such use in cars etc..\n\nTo listen to streaming scanners:\n\nSan Diego Police, Fire\nhttp://www.scansandiego.net/ (Video)\n\n\nSan Diego County Sheriff, Police, CHP & Fire\nhttp://www.scansandiego.net/ (Text Tags)\n\nSan Diego County RCS North Fire & VHF Fire\nhttp://www.kg6fwo.net/\n\nSan Diego County RCS North Fire\nhttp://www.mattlogic.com/\n\nSan Diego County RCS South Fire\nhttp://www.mattlogic.com/\n\nSan Diego County RCS South Fire\nhttp://www.firefeeds.com\n\nSan Diego County ATC\nhttp://www.scansandiego.net/ (Text Tags)\n\nLinks for other areas streaming:\n\nhttp://scannerfeeds.us\nhttp://livepolicescan.homeworldnet.com/\nhttp://www.scannerbuff.net/teamspeak/teamspeak.html\nhttp://www.incidentbroadcast.com/\nhttp://shoutcastscanners.notlong.com/\nhttp://www.police-scanner.info/index.htm\nhttp://www.publicsafetyfeeds.com/\nhttp://www.FireFeeds.com/\nhttp://easystream.us/\nhttp://www.LiveATC.net
1122515
Yes, u can do with buddy spy software.\nhttp://www.buddy-spy.com/\nClick the link to download and install the software.
844813
Do something modular, that way if you don't get the whole project finished, you can present the individual modules.\n\nSomething like a spread spectrum data link in ISM band is a good idea.\n\nYou'll need \n* A stable reference\n* A synth\n* A VCO\n* An LNA\n* Some mixers\n\nThese will all need either designing from scratch (if you have the time and inclination), or they will need to be bought in if you have the money.  Either way, the system components should be rigourously characterised and documented as you go.  This all goes in the final report (V. important).\n\nOn top of the RF bits and bobs is the fun stuff like encoding and decoding the spreading signal.  Here again, document EVERYTHING for your report.\n\nWork hard and good luck!
888345
Zone Alarm is good and free\n\nwww.zonelabs.com
48570
Or try Yahoo music, also known as www.launch.com\nNot only is it free, but you can create your own customized station.