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Created by dipity on Sep 9, 2009
Last updated: 08/29/10 at 03:05 AM
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UHF 902 MHz Gen 2 Handheld RFID Reader/WriterAddPR.com (press release)It operates over the frequency range of 902 to 928MHz with spread spectrum frequency hopping. The handheld RFID reader/writer has a read range of 0 to 3 ...and more »
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Bluetooth - An Updated Wireless TechnologyBoosh News (press release) (blog)Bluetooth works through a radio technology termed as frequency-hopping spread spectrum that split the data for being sent and transmit. ...
http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNGyLTTAHY0b6uYoJ_keCsBFoFyQQQ&url=http://www.booshnews.com/2010/08/26/bluetooth-an-updated-wireless-technology/
Advanced 2.4 GHz wireless technology, without caring about the signal's delay or loss USB2.0 interface, mini-receiver, automatic to connect Automatic frequency-hopping technology, strong anti-interference, high sensitivity. Price:$53.99 with free shipping Link: www.pandawill.com
AUVSI: FreeWave military radios hit 800000h milestoneFlightglobal... "jamming" US radio transmissions for radio-guided torpedoes, the original frequency-hopping spread spectrum (FHSS) technology used only 88 frequencies. ...and more »
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How to Make Your Wireless Data System More Resilient to AttackEP MagazineThe Frequency Hopping Spread Spectrum (FHSS) system is a type of wireless communication that is resilient to interference and “jamming. ...
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Phase Technology® Unveils Wireless Surround SpeakersVirtual Press Office (press release)The transmitter operates in the 2.4 GHz band and uses frequency hopping to ensure an interference-free signal; its uncompressed audio is indistinguishable ...and more »
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Excerpt
...export controls on sensitive military technology, including signals encryption. Mr Bradshaw is quoted as saying the frequency-hopping option could be installed only at Barrett's factory by authorised staff. The Defence Department in Canberra told the journal:...
Source Info
Sydney Morning Herald
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http://www.smh.com.au/world/junta-subverts-sanctions-with-australian-radios-20100815-1258b.html
India TalkiesJunta subverts sanctions with Australian radiosSydney Morning Herald''If frequency hopping required an extra part or key to unlock, then it would be far more secure to send overseas. However, since it's already built in, ...Burmese Army procures radios from Perth, evading Oz govt. sanctionsSifyall 16 news articles »
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AV Industry NewsPortable, two-way digital wireless is hear!AV Industry NewsWith patented frequency hopping technology, Digi-Wave minimizes interference from other devices, and 2.4 GHz operation is harmonized for use in most ...and more »
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Design, install and maintain a reliable network infrastructurePlant ServicesFrequency-hopping often is used for SCADA systems because of its long-range capability. Cellular is popular with machine builders to enable remote ...
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myGLOSS7 Sexy Celebs You Didn't Know Were GeeksmyGLOSSHer biggest claim to geek fame is her joint patent with composer George Antheil for an early version of “frequency hopping” or spread spectrum communication ...
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Electronics Talk (press release)LTC554x mixers satisfy needs of WiMAX basestationsElectronics Talk (press release)Two single-ended LO inputs with high isolation are provided for frequency-hopping applications. Each LO input is also single ended and always 50ohm matched ...
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WALKERA 4F200 Flybarless 3-Axis-Gyro System 6CH Metal Upgrade Brushless with WK-2801Pro Transmitter Edition Helicopter RTF - 2.4GHz Features: Simulated three-blade structure takes advantage of high efficiency and steady flight 3-axis controlled balance system provides accurate flight location Brushless motor absolutely features both longevity and power 2.4G Frequency-Hopping Spread Spectrum technology automatically assigns ID code with strong anti-jamming and high accuracy Specification: Main Rotor Dia.: 420mm Tail Rotor Dia.: 110mm Overall Length: 420mm Drive Motor: WK-WS-21-004 Receiver: RX-2612V ESC: WK-WST-20A-2 Transmitter: WK-2801PRO Battery: 7.4V 1500mAh Li-Po Weight: 360g (Battery included) Visit www.ehirobo.com
The FSVR is the first spectrum analyzer with two analysis modes: conventional (heterodyne) spectrum analysis and real-time (FFT) analysis. In addition, the instument offers various functions to analyze digital or analog modulated signals. Thus the user is well prepared for any measurement task, from very fast full-span overview measurements up to the detection of sporadic interferers or the monitoring of frequency-hopping radio systems.
Specification 1).Main Rotor Dia. : 420mm 2).Tail Rotor Dia. : 110mm 3).Overall Length: 420mm 4).Drive Motor: WK-WS-21-002 5).ESC: WK-WST-20A 6).Transmitter: WK-2602 7).Battery: 7.4V 1200mAh Li-Po 8).Weight: 320g (Battery included) Features 1).Simulated three-blade structure takes advantage of high efficiency and steady flight. 2).3-axis controlled balance system provides accurate flight location. 3).Brushless motor absolutely features both longevity and power. 4).2.4G Frequency-Hopping Spread Spectrum technology automatically assigns ID code with strong anti-jamming and high accuracy. Please visit www.myrcmart.com for more information.
www.renishaw.com Renishaw's smallest probe with frequency hopping radio transmission - RMP40 is a new addition to Renishaw's inspection probe family. This is Renishaw's smallest frequency hopping spread spectrum (FHSS) radio probe ideal for all sizes of machining centres.
Arch Rock Develops Wireless Mesh Platform For Smart Grid ApplicationsRenew Grid... distributed mesh routing algorithms, combined with distributed frequency-hopping algorithms; public key infrastructure-based security services at ...and more »
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Gadgets DNA20 iPhone 4G / HD Wishlist Features that Will Steal WWDC EventGadgets DNAWe're hopping this works with the iPhone 4G as well, but Bluetooth keyboard option for the iPhone will be an icing on the cake. 12) Improved camera with ...and more »
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Miranda Raison presents Hedy Lamarr, the Hollywood actress who co-invented frequency hopping. Learn more and vote for your favourite pioneer on pioneers.bcs.org.
Test & Measurement WorldRF fading simulationTest & Measurement WorldThe same is true for military radio links with frequency hopping. But also actual TV signals or even simple FM signals must be tested under fading ...
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Bill Cross, W3TN, Presents FCC Forum at 2010 Dayton Hamvention®ARRL... be made for the purpose of obscuring the meaning of a message, the Commission permitted only frequency hopping and direct sequence spreading techniques. ...
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Linx Technologies Acquires Apex WirelessRF Globalnet (press release)Apex specializes in high performance, cost-optimized wireless products employing RF transmitters, receivers, and transceivers, including frequency hopping ...
http://news.google.com/news/url?fd=R&sa=T&url=http%3A%2F%2Fwww.rfglobalnet.com%2Farticle.mvc%2FLinx-Technologies-Acquires-Apex-Wireless-0001&usg=AFQjCNETFXQiv2kbdV0o9ojCS1aSpmS-SQ
Wood & Douglas industrial radio and modemElectronicsWeekly.comThe ChannelShare collision avoidance, with frequency hopping spread spectrum technology, reduces the risk of interference, and its rugged construction ...
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AZoSensorsLibelium Bluetooth Module for Waspmote Wireless Sensor Network PlatformAZoSensorsTo counter this problem Waspnote empowers ZigBee and Bluetooth to function in the same environment through the use of adaptive frequency hopping (AFH) that ...
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Libelium Opens Access to Wireless Sensor Networks From Portable Computing DeviceMeasurementDevicesFor this reason Waspmote enables Bluetooth and ZigBee communication to work in the same environment by using Adaptive Frequency Hopping (AFH) which enables ...
http://news.google.com/news/url?fd=R&sa=T&url=http%3A%2F%2Fwww.measurementdevices.com%2Findex.php%3Fname%3DNews%26file%3Darticle%26sid%3D2038&usg=AFQjCNHRZ0D1ImAsIICnAnCrBaPXEo_1gA
My Experence with Cisco Clean AirNetworkWorld.comA wireless frequency hopping jammer I built myself in the CodeCave that uses old 802.11 technology like 802.11FH, proprietary wireless and cancellation. ...
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EDN.comPunching through the ether with RF-range extendersEDN.comAlthough FHSS (frequency-hopping-spread-spectrum) and DSSS (direct-sequence-spread-spectrum) techniques can allow multiple radios to share the same ...
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www.emfnews.org www.emfnews.org The focus on mobile phones has distracted attention from the cordless phone, which has insinuated itself into positions where they could cause the most harm. Cordless phones are typically placed on the desktop or at the bedside, where people are maximally exposed to radiation intensities hundreds and thousands of times stronger than those from nearby cell phone transmitters sufficient to cause cancers. And they are emitting continuously 24 hours a day. Anecdotal evidence has been emerging of people suffering illnesses such as chronic fatigue and sleep disturbance [19], which are very similar to those from mobile phones. An experiment carried out at Landau University in Germany showed that bees failed to return to the hives when cordless phone base stations are placed in them [7]. Experts demand health warning on cordless phones The current digital enhanced cordless telephone (DECT) sold in Europe consists of one or more handsets that communicate with a base station via radio waves in the microwave range. The base station emits (broadcasts) microwave radiation at full power pulses100 times a second as long as it is plugged into the wall socket. There have been calls for health warning on DECTs [19, 20], if not an outright ban (see later). DECTs or similar phones are now widely used throughout the world. Independent measurements have been carried out on the power of the microwaves emitted, the most thorough by Thomas Haumann (Umweltanlaytik ...
The hopping robot exhibiting monostability when perturbed by a ruler. Amplitude 1700, frequency 4Hz
It seems that the Fly-Dream 2.4GHz system still uses much less of the band than some other frequency-hopping RC systems. Despite the low power density and somewhat more constrained use of the band it still provides good resistance to interference. Please visit the RCModelReviews.com website for the full review.
Bangladesh Army Signal Corps history and activities. Proudly brought to you by bdmilitary.com
____ boazpower.com ____(October 20, 2003) She was born in Vienna in 1914 as Hedwig Eva Maria Kiesler. As a teenager, her interest in the theatre led her to the famous Berlin acting school headed by Max Reinhardt. In 1933, at the age of nineteen, she exposed her acting skills, and much of herself, in a film called Extase (Ecstasy). She starred in that Czech film and, due to the nude scenes, it caused an international scandal. Before long, she became famous. Fritz Mandal, the first of six husbands, also came along in 1933. It was upon the insistence of her parents that she married the prominent Austrian munitions tycoon. Despite their Jewish background, Mandal sympathized with the Nazis. She, on the other hand, despised the regime and felt there was no future for Jews in Europe. One night, she left her husband and made her way to London. There she met Samuel Goldwyn, the Hollywood mogul. He gave her a new stage name and brought her to Hollywood. There the raven-haired beauty starred in several films and became a social fixture. It was in Hollywood that she met composer George Antheil. Antheils parents were from East Prussia. He was born in New Jersey in 1900. George studied music in Philadelphia and then pursued a career as a concert pianist in Europe. At first he was in Berlin and then settled in Paris in 1923, becoming a top avant-garde composer of the time. One of his pieces, Ballet Meanique, was scored for sixteen player pianos, xylophones and percussion. One version ...
Link: www.buy.com The Micro Bluetooth USB Adapter (Model TBW-106UB) networks Bluetooth enabled devices such as cell phones, keyboards and headsets. The size of a penny, simply plug this micro-device into an available USB port on your laptop or desktop and experience exceptional Bluetooth connectivity. Connect as many as 7 Bluetooth devices at distances of up to 100m (328ft). Enhanced Data Rate (EDR) technology transfers your data quickly. Adaptive Frequency Hopping (AFH) minimizes interference from other wireless technologies. This compact device also provides secure encrypted data communication.
I have been building and experimenting with antennas for most of my 30 plus years in this hobby. Over the last 5 years I have really focused on magnetic loop or small transmitting loop antennas. I have built several, however, this one is nothing special other than my youngest son Noah, asked me to help him make an antenna today. The project was kicked off by rolling some aluminum tube (12' long, 1" OD) into a loop. Our only investment into this antenna was to be scrap material laying around the shop. This video is a brief summary of what we ended up with by dinner time. I still need to TIG weld the gamma mach to the loop and then try to improve upon the quick and dirty throw together tuning of capacitive plates. This design is not too friendly to frequency hopping as tuning the capacitor proved to be very tedious in this situation, again, it was rigged with scrap materials in a fly by the seat of my pants manner. It however would make a great fixed frequency antenna. Actually on 10, 12, 15 and 17 meters, it seemed to have some decent usable TX bandwidth with out retuning, whereas on 20 meters, I have to retune every 15 Khz or so. It seems to receive on 40 meters very well, but have not yet checked to see if it will provide 3Khz or more of bandwidth for SSB TX, maybe tomorrow I will try. Thanks for watching and please keep the comments and suggestions coming. 73 VE3UK Bob
Part 2: a look at the "scan mode" of the Hitec AFHSS system in operation and how it might be useful for those who enjoy flying FPV models.
tinyurl.com This new ultra digital wireless technology provides secure video with exceptional image quality and crisp audio. The encrypted frequency hopping technology guarantees privacy and prevents traditional interference from other technology devices such as cordless phones, wireless routers and microwave ovens.
Here's the flight-test of the FrSky 2.4GHz spread spectrum module and receiver. I gave it a thorough workout in the RCModelReviews.com official "Flying Trainer" RC plane and asked another recent purchaser of the FrSky system what he thought of it after using it for a day. Check out the other video review of the FrSky 2.4GHz RC system on the RCModelReviews YouTube channel and the review article on the RCModelReviews.com website.
RCModelReviews takes a look at the FrSky (formerly FriSky) 2.4GHz frequency-hopping RC system, comprising Futaba/Hitec or JR compatible transmitter module and 8-channel or 4-channel receiver. You'll find the full review article here: www.rcmodelreviews.com Don't forget to subscribe, you could win this system!
www.renishaw.de Messtaster mit Funksignalübertragung Das neue Messtastersysteme, das die einzigartige Signalübertragung mittels Frequenzsprungtechnik (Frequency Hopping Spread Spectrum, FHSS) verwenden, und damit ein automatisches Einrichten sowie Messen während des Bearbeitungsprozesses auf CNC-Werkzeugmaschinen aller Größen ermöglicht, wurde auf der EMO Mailand erstmalig präsentiert. Der neue ultrakompakte RMP40 Messtaster eignet sich besonders für Mehrachs- und Dreh-/Fräs-Anwendungen, während die RLP40 Variante speziell für einen rauen Einsatz in Drehmaschinen konzipiert wurde. Mit dem RMP40M ist ein modularer Aufbau möglich.
In addition to the internal noise suppressing techniques, maXTouch also features frequency hopping to avoid noisy frequency bands. By changing the frequency of the signals used to drive the sensor, the signal acquisition will be undertaken in frequency bands with less noise.
levanababyview20.blogspot.com This new ultra digital wireless technology provides secure video with exceptional image quality and crisp audio. The encrypted frequency hopping technology guarantees privacy and prevents traditional interference from other technology devices such as cordless phones, wireless routers and microwave ovens.
DistortionPsyche
South Carolina's Broadband: How Officials Quietly Privatized a Key State AssetFree TimesThere are a lot of places in the country where slow dial-up is still the norm for hopping on the Net. Depending on one's perspective about the recent deal, ...and more »
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Bandspeed Announces AirMaestroTM Spectrum Analysis Solution for Wi-Fi® NetworksYour-Story.org (press release)This prevents unnecessary channel hopping by the WLAN, adding more stability and performance to the network.” Bandspeed AirMaestro Signal Analyzer software ...and more »
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Nordic Semiconductor Ships Samples And Development Kits OfRF Globalnet (press release)Combined with the robust adaptive frequency hopping of Bluetooth low energy, µblue will provide excellent co-existence performance in the presence of other ...
http://news.google.com/news/url?fd=R&sa=T&url=http%3A%2F%2Fwww.rfglobalnet.com%2Farticle.mvc%2FNordic-Semiconductor-Ships-Samples-And-0001&usg=AFQjCNGYXZQTtrACmogop_t_DyWUiGOi5Q
Breakthroughs in inertial sensors to augment GPS will guide future of ...Military & Aerospace ElectronicsIt also will enable ultra-fast frequency hopping in synchronized spread-spectrum communication for improved security and jam resistance and strong ...
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Geek.comSkyCross iMAT Antennas Allow Simultaneous Operation of WiFi, Bluetooth in NetbooksTMCnet... feed dedicated to WiFi and another feed shared with Bluetooth which employs chipset providers' time-sharing and adaptive frequency hopping algorithms. ...iMAT from SkyCrossCoolest Gadgetsall 5 news articles »
http://news.google.com/news/url?fd=R&sa=T&url=http%3A%2F%2Fheadsets.tmcnet.com%2Ftopics%2Fheadsets%2Farticles%2F68923-skycross-imat-antennas-allow-simultaneous-operation-wifi-bluetooth.htm&usg=AFQjCNF7hfpoJuieacXCu2nCXJ2GiL8vcg
Geek.comSimultaneous Wi-Fi and Bluetooth operation in netbooksTelecommunications Magazine... dedicated to Wi-Fi and another feed shared with Bluetooth, which uses the chipset providers' time-sharing and adaptive frequency hopping algorithms. ...SkyCross iMAT Antennas Allow Simultaneous Operation of WiFi, Bluetooth in NetbooksTMCnetiMAT from SkyCrossCoolest Gadgetsall 5 news articles »
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Water and WastewaterAccutech TM10 Wireless Turbine Meter TotalizerWater and WastewaterEach unit is self-contained, featuring an integrated 900MHz frequency hopping, spread-spectrum transceiver, antenna, and a long lasting battery for years of ...Control Microsystems Releases The Accutech TM10 Wireless TurbinePower Online (press release)all 6 news articles »
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