http://www.neonlightssigns.info/radio-transmitter/
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2 Transmitters 10 Channels Hoist Crane Radio Remote Control System 24V DC |  |
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US $330.00 | 17d 21h 7m |
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These are 4 Johnson 242-7152 Car Transmitter Walkie Talkie Radios | |
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2SC1957 TRANSISTOR CB/HAM RADIO TRANSMITTER RF DRIVER | |
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Color Self Level Sewer Camera with Radio Transmitter | |
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2 Transmitters 8 Channels Crane Radio Remote Control | |
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TELERADIO TELE RADIO REMOTE CONTROL TRANSMITTER T60 MD3 T60TX - 03STL - US | |
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US $99.99 | 25d 7h 12m |
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Radio Corp. of America Crystal Holder TBS Series Transmitter Channel Freq. 65. | |
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US $29.00 | 28d 8h 5m |
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Vintage Motorola Radio Transmitter Receiver Portable Test Set Sold As Is | |
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US $50.00 | 28d 11h 23m |
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fm FM transmitter microphone board, pickup, a full set of radio listeners | |
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2 AYDIN VECTOR RADIO FREQUENCY TRANSMITTER 27129202-515 | |
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US $60.00 | 26d 21h 48m |
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Radio Transmitter
How do you connect a sensor to a radio transmitter and programming it to transmit one task only?
I badly need advice on how to do this for our science project. Our project is to monitor garbage through radio waves and sensors... the problem is that how do we connect the sensor to the transmitter and how do we get to program it to transmit the garbage levels... and one more thing... What Type of sensor do we use?
Sounds like a cool project that's best if broken down by section.
The key to a successful science project is to keep it as simple as possible while demonstrating one or more concepts. Cost will also be a concern. The trickiest part will be your radio link since there are all kinds of government regulations about what you can and cannot do especially at the unlicensed level. Instead you want to find a transmitter and receiver that already work well together over short distances. Garage door or car alarm remotes can be difficult to work with on the receiver end. A pair of cell phones might work if you have unlimited minutes to burn. Low power toy walkie talkies might work if you had a way to push the transmit button for short intervals. An iPod type transmitter and FM radio might work together. So would a couple of WiFi enabled laptops networked together through a wireless router, but now we're getting complicated again. A battery powered wireless baby monitor just might be the ideal solution.
Note that most of the transmit/receive link possibilities mentioned above involve audio. You'll want to use your garbage level to control either the frequency or volume of the audio you transmit. Volume is probably the easiest since you can use a relatively simple meter circuit at the receiving end to measure it.
One of the nice things about a science project is you can control many of the parameters. Use a small waste basket as your garbage can and use something that packs relatively uniformly like tennis balls or crushed aluminum cans as your garbage. Now all you need to do is weigh them to know how full the can is.
Place your garbage can on a plywood platform hinged at one edge and held up by springs. Get one of those slide style volume controls and rig it so that the slide moves as the platform edge moves under the weight of the garbage. Adjust the tension and number of springs as needed.
You'll need an audio source such as a simple oscillator or a steady tone saved on an MP3 player. This feeds the volume control on you platform scale which in turn feeds your garbage monitor transmitter (in place of the microphone).
The volume at the receiver (after substituting a meter for the speaker) will track the weight of the garbage. Lookup LM3914 for circuits that use LED's that you can label from empty to full.
I'm assuming that someone in your group can handle the basic electronic connections.
Now go get that A.
Don
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2 Transmitters 10 Channels Hoist Crane Radio Remote Control System 24V DC | |
|
US $330.00 | 17d 21h 7m |
|
These are 4 Johnson 242-7152 Car Transmitter Walkie Talkie Radios | |
|
US $85.00 | 9h 26m |
|
2SC1957 TRANSISTOR CB/HAM RADIO TRANSMITTER RF DRIVER | |
|
US $6.95 | 1d 14h 59m |
|
Color Self Level Sewer Camera with Radio Transmitter | |
|
US $2,995.00 | 28d 7h 51m |
|
2 Transmitters 8 Channels Crane Radio Remote Control | |
|
US $225.00 | 10d 20h 47m |
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TELERADIO TELE RADIO REMOTE CONTROL TRANSMITTER T60 MD3 T60TX - 03STL - US | |
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US $99.99 | 25d 7h 12m |
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Radio Corp. of America Crystal Holder TBS Series Transmitter Channel Freq. 65. | |
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US $29.00 | 28d 8h 5m |
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Vintage Motorola Radio Transmitter Receiver Portable Test Set Sold As Is | |
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US $50.00 | 28d 11h 23m |
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fm FM transmitter microphone board, pickup, a full set of radio listeners | |
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US $56.99 | 27d 3h 2m |
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2 AYDIN VECTOR RADIO FREQUENCY TRANSMITTER 27129202-515 | |
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US $60.00 | 26d 21h 48m |
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TELEMOTIVE MAGNETEK RADIO TRANSMITTER CRANE HOIST CONTROL PENDANT 51518 | |
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US $129.99 | 29d 7h 33m |
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2X Uplink Digicell 1500 Receiver/Transmitter Radio | |
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US $29.95 | 24d 11h 27m |
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UPLINK DIGICELL 1500 RECEIVER/TRANSMITTER RADIO | |
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US $17.09 | 26d 13h 33m |
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Real Estate Talking House AM 5 Min Radio Message Broadcasting Transmitter In Box | |
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US $129.08 | 15d 3h 37m |
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Anritsu MS8604A 8.5GHz Digital Mobile Radio Transmitter | |
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US $5,000.00 | 25d 16h 6m |
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Machlett ML-5682 Shortwave Radio Broadcast Transmitter "TDP" Tube | |
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US $799.99 | 25d 5h |
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NAVY RADIO ROOM SIGN "OPERATING TED RADIO TRANSMITTER" | |
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US $17.95 | 24d 1h 13m |
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TELENETICS 2420 MILLIMETER WEATHERPROOF WAVE RADIO TRANSMITTER RECIEVER UNIT | |
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US $799.95 | 23d 9h 13m |
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Motorola Ultrastar 2 DLR microwave radio transmitter 4 DS-1 circuits +29 dBm | |
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US $2,900.00 | 17d 9h 19m |
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Racon Micropass 5004E Microwave Radio Transmitter Anten | |
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US $549.99 | 20d 14h 15m |
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2.4GHZ, 4CH Radio Transmitter $46.25 2.4GHZ, 4CH Radio Transmitter |
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2-Ch Radio Transmitter for Seagull RC Plane $18 2-Ch Radio Transmitter for Seagull RC Plane |
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Walkera 2.4Ghz 4-Channel Radio Transmitter (WK2401) $59 Walkera 2.4Ghz 4-Channel Radio Transmitter (WK2401) |
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Sangean America Sangean (SR3) Radio Transmitter/Receiver $37.25 Sangean America Sangean (SR3) Radio Transmitter/Receiver |
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Transmitter $24.95 Transmitter |
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3-Channel Radio Remote Control ( 3-CH Transmitter ) for R/C Airplane $20 3-Channel Radio Remote Control ( 3-CH Transmitter ) for R/C Airplane |
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Radio Remote Control (Transmitter ) for Yellow Bee R/C Airplane $18 Radio Remote Control (Transmitter ) for Yellow Bee R/C Airplane |
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Sangean America Sangean (DT-180) Radio Transmitter/Receiver DT180 $46.77 Sangean America Sangean (DT-180) Radio Transmitter/Receiver DT180 |
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Radio Station Wireless FM Transmitter for MP3/MP4/iPod $11.99 Function:Enjoy music through wireless signal anywhereConnect your MP3, MP4, TV, DVD and all audio devices, listen radio music easilyHigh sensitive receiver auto scan FM channel, also use it as radio to receive other channelsAllows you listen radio within 10 metersFM transmitter with antenna to improve FM signalSpecification:Transmitter: 86.5MHzReceiver: 86.5MHzFM radio: 87.5 ~ 108MHzFrequency response: 40-15000HzS/N Ration: 45dBPower requires: transmitter - 2 x AAA 1.5V batteries, receiver - 2 x AAA 1.5V batteriesSize: receiver - 80*49*17mm, transmitter - 94*66*30 mmTotal weight: 180gAccessories: 3.5mm earphone, audio cable, audio connector, carrying strap |
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iLuv Digital FM Radio Transmitter for Car or Speakers $29.96 Listen to iPod songs through your car's radio with this powerful device. The FM radio transmitter offers strong power in a compact and easy-to-use design for ultra-light portability and maximum convenience. From iLuv. iPod (shown) not included. |
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Sottens Transmitter $70.1 High Quality Content by WIKIPEDIA articles The Sottens Transmitter is the nationwide transmitter for Frenchspeaking Switzerland. The transmitter is located at Sottens, Canton of Vaud, Switzerland. It is run on 765 kHz with a power of 600 kilowatts and is easily receivable during the night throughout the whole of Europe. Since 1989 the aerial used has been an aerial with feeding in the middle, fixed on a 188metre high grounded freestanding steel framework tower. Before 1989 a 190metre high selfradiating, free standing steel framework tower was used as a transmission aerial. The Sottens transmitter most recently broadcast Option Musique radio programme from Radio Suisse Romande, up until 5 December 2010. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 76 Publication Date: 2010/12/23 Language: English Dimensions: 6.00 x 9.02 x 0.18 inches |
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PetSafe PIRF100 Indoor Radio Fence Transmitter Only $66.11 Use the Petsafe PIRF100 Indoor Radio Fence Transmitter as an add on to your Petsafe / Radio Fence InGround Containment system. It works with any Petsafe or Radio Systems inground containment receiver. Suggested for pets that are at least 6 months old and weigh at least 8 pounds. Effective in keeping your dog out of particular rooms or off of your favorite furniture. Use near garbage cans or food prep areas. Works with any Radio Fence InGround Containment receiver. Will not work with the wireless PIF200 or PIF300. Adjustable range up to 20 feet. Compatible with Radio Fence. Instructional manual included. Collar NOT included. |
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IntelliTouch Transmitter $92.99 Eos Converge Audio Receivers (EOSC200RX) Eos Converge Audio Recevier with Amplifier (EOSC201RX) Eos wireless speakers (Eos-100RB) Line Input Jack: 3.5mm stereo mini Line Output Jack: 3.5mm stereo mini Wireless Transmitter: 2.4GHz Digital FHSS Bandwidth: 1.5 MBPS Range: 150 feet (50m) The Eos Converge Transmitter is extremely versatile it lets you play all your music, all over your house from virtually any audio source imaginable. Connect the Eos Converge Receiver to the USB port of your computer and stream music from iTunes or other music media player, even internet radio stations like Pandora, Rhapsody, Last FM and more or connect to your home stereo theater receiver or stereo system even your iPod. With the Eos Converge Transmitter you can have your music from almost any audio device anywhere in your house, inside, outside, upstairs or down. With Eos Auto-Link, just turn the Eos Converge Amplified Receiver. EOSC200TX Eos Converge Transmitter IntelliTouch IntelliTouch Communications Transmitter www.intellitouch.com |
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RC Seaplane W/4 Channel Radio Transmitter (Really Cool Video) $379.99 RC Seaplane W/4 Channel Radio Transmitter (Really Cool Video) is in stock and ready to ship from TrendTimes.com. Our toy stores sell RC Seaplane W/4 Channel Radio Transmitter (Really Cool Video) for the best price of $229.95 and personal shoppers are standing by to assist you. |
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29389 - Cables To Go Trulink Radio Transmitter Kit $236.32 The VGA over UTP Box Transmitter to Wall Plate Receiver Kit allows you to extend a VGA signal over a Cat5/Cat5e/Cat6 unshielded twisted pair cable up to 300ft without signal degradation at 1920x1200 or 1920x1080 resolutions. This solution is compatible with any operating system and is truly plug and play with no drivers or software required. In addition, this solution utilizes phantom power providing you the flexibility to power at either the transmitter or receiver end. EQ (sharpness) adjustments can be made for optimal signal clarity. The EDID copy feature ensures compatibility with any monitor. Built-In power surge protection and high ground loop immunity ensure high performance signal extension. [LL5528] UPC: 757120293897 2 LB |
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29393 - Cables To Go Trulink Radio Transmitter Kit $292.78 The VGA+3.5mm Audio over UTP Box Transmitter to Box Receiver Kit allows you to extend a VGA and 3.5mm audio signal over two Cat5/Cat5e/Cat6 cables up to 300ft without signal degradation at 1920x1200 or 1920x1080 resolutions. This solution is compatible with any operating system and is truly plug and play with no drivers or software required. In addition, this solution utilizes phantom power providing you the flexibility to power at either the transmitter or receiver end. EQ (sharpness) adjustments can be made for optimal signal clarity. The EDID copy feature ensures compatibility with any monitor. Built-In power surge protection and high ground loop immunity ensure high performance signal extension. [LL5532] UPC: 757120293934 2 LB |
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29392 - Cables To Go Trulink Radio Transmitter Kit $282.2 The VGA+3.5mm Audio over UTP Box Transmitter to Box Receiver Kit allows you to extend a VGA and 3.5mm audio signal over two Cat5/Cat5e/Cat6 cables up to 300ft without signal degradation at 1920x1200 or 1920x1080 resolutions. This solution is compatible with any operating system and is truly plug and play with no drivers or software required. In addition, this solution utilizes phantom power providing you the flexibility to power at either the transmitter or receiver end. EQ (sharpness) adjustments can be made for optimal signal clarity. The EDID copy feature ensures compatibility with any monitor. Built-In power surge protection and high ground loop immunity ensure high performance signal extension. [3156020] UPC: 757120293927 UNSPC: 43222608 2 LB |
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Warzewo Transmitter $70.1 High Quality Content by WIKIPEDIA articles Warszewo transmitter ( Polish: RSN Warszewo) is a radio broadcasting facility at SzczecinWarszewo, a suburb of Szczecin, in Poland. Warszewo transmitter went in service in 1949 as mediumwave broadcasting station, active in 1949/1950 on 1302 kHz, between 1950 and 1955 on 1259 kHz and between 1955 and 1978 on 1304 kHz. After waveplan of Geneva went in service on November 22, 1978, it broadcast on 1260 kHz with a power of 160 kW and was therefore receivable at night time in whole Europe. Warszewo transmitter, which used as antenna a 113 metres tall guyed mast radiator insulated against ground, stopped mediumwave broadcasting on January 2, 1998 at all. The mast was transformed afterward in a mast for FMtransmission, whereby its height increased to 114 metres. The basement insulator was bridged and its guys, divided by insulators, were replaced by guys without insulators. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 40 Publication Date: 2010/12/23 Language: English Dimensions: 6.00 x 9.02 x 0.10 inches |
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Kurt Andersen tours the WNYC radio transmitter
Radio Control Boats
Ships and boats, yachts and submarines have long been the subject of fantasies nursed by the young and the old. The waters of the seas and oceans hold many secrets which to the mind of the hobbyist were shared by the sea vessels that sailed on them. One yearns to be part of the mystery and adventure that surrounds sailing. A very select few can afford to own sea faring yachts and boats. The rest of us live our dreams by owning ship or boat models that are fashioned after the real ships and boats.
Made to scale boats can be made to sail with the help of radio control equipment with which they are fitted. Such radio controlled boats can be operated remotely with the help of a multi channel radio transmitter. The radio transmitter is in the hands of the operator while there is a corresponding receiver on the boat. Signals are sent to the radio receiver on the boat by changing the position of the two joy sticks on the transmitter. The receiver on the boat is connected to two battery operated electric motors. Signals received from the radio transmitter which is handled by the operator are translated into instructions to run the motors as per directions.
With a host of websites and companies now offering ship and boat models, they are able to offer exciting deals backed by comparative rate studies.
Models can be handcrafted and made of wood or acrylic or a little of both. But fact remains that astute care is taken to deliver a finished and aesthetically produced boat model since it can be expected that one who would want to own a boat model for the love of owning a near original piece would settle for nothing less than a near perfect look alike. Radio controlled boats however have to be treated with more care since one cannot have water entering the motors on the boat.
Although boats were considered a necessity for transportation until several years ago, today they are more a form of recreation and an indulgence towards a hobby. Granted that actually sailing on a boat is an experience an adventurous person would love above anything else, the technically oriented opt for the radio controlled variety of boat models to add to their collection of antique water-worthy artifacts.
About the Author
Radio Controlled boats offer all the thrill of racing across the water, easy navigation and remote controls.
