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ZDNet Dictionary Definition
- RF
- (1) Radio Frequency Definition #2 below explains radio frequencies; however, the term may be used to contrast wireless transmission systems that do not require line of sight with those...
- Full RF Definition >>
Additional Resources
- Vizio VO320E
- Photo gallery: Vizio VO320EVizio chose to adorn its VO320E 32-inch LCD with claims of environmental consciousness, saying the little set exceeds Energy Star guidelines by 15 percent. But that's not a very high standard, and according to our tests the Vizio, while definitely no power hog, sips just...
- Tags: TVs, Monitors & displays, Vizio, Vizio VO320E
- Product reviews 2009-11-16
- Toshiba 32AV502U
- Photo gallery: Toshiba AV502U seriesWhen we say the Toshiba AV502U series can produce relatively deep black levels, the key word is "relatively." It's perhaps more accurate to say that its shade of black outdoes most other less-expensive, lower resolution small-screened LCDs we've seen by a narrow margin. It...
- Tags: Monitors & displays, TVs, TV & Home Theater, menu system, Toshiba AV502U, Toshiba Corp., LCD
- Product reviews 2009-11-16
- NetSurveyor Pro 1.0.9305 (Windows)
- NetSurveyor Professional is a new type of diagnostic tool that puts a different spin on WiFi troubleshooting - emphasizing performance metrics over measurements of RF signal strengths. NetSurveyor-Pro is used to test the performance and reliability of a WiFi network and help identify and troubleshoot problems. Furthermore, NetSurveyor-Pro also allows...
- Tags: Performance, Microsoft Windows, Nuts About Nets, NetSurveyor Professional, NetSurveyor-Pro, Wireless LANs, Performance Management, Wi-Fi, Wireless And Mobility, Human Resources, Workforce Management
- Software downloads 2009-11-01
- XACT XTR8CK Replay Sirius Satellite Plug & Play Radio Receiver and Vehicle Kit - Sirius satellite radio tuner with RF modulator
- No customer support, Horrid receptionThis is the worst sirius radio ever. I have emailed XACT three times for customer support. So far I have gotten, NO response. The only way to contact XACT is through email. Fortunately I only paid $46. for this unit. I...
- Tags: Advertising & Promotion, Sirius Satellite Radio Inc., satellite, Sirius, XACT, radio
- Discussion threads 2009-10-31
- Adesso WKB-3100UB wireless keyboard with trackball
- The $80 Adesso WKB-3100UB wireless keyboard is a good mini keyboard for surfing the Web from your sofa, but it's a nightmare to use as an everyday keyboard and trackball. The keyboard is usable most of the time, but its inaccurate trackball, poor button press recognition, sticking keys, lack of...
- Tags: Keyboards, wireless keyboard, wireless, keyboard-and-mouse, keyboard, Adesso, trackball
- Product reviews 2009-10-29
- Envizen Digital Duo Box Pro ED8850A
- You probably haven't heard of Envizen, but it's one of several off-brand companies that are putting out new digital portable TVs to replace all the obsolete analog units that were toted to sporting events or kept around for emergencies when the power went off. As implied by its name--the Envizen...
- Tags: TVs, TV & Home Theater, Consumer electronics, DVD, Games, digital television, TV
- Product reviews 2009-10-27
- Indigo 4.1.1 (Mac)
- Indigo is a home control server that integrates INSTEON and X10 hardware devices. Save money, conserve water, and reduce electrical usage by automating your home with Indigo's unlimited scheduling and control logic. Using Indigo's built-in Web server, you can access and control your home from anywhere using any modern Web...
- Tags: Apple Macintosh, Microsoft Indigo
- Software downloads 2009-10-10
- Samsung UN46B8500
- Photo gallery: Samsung UNB8500 seriesIf you watch football or read CNET, chances are you've noticed ads for Samsung's so-called LED TVs. The company has released three series of these super-thin LED-based LCDs so far this year, the 6000, the 7000, and the 8000 models, but it's saved the...
- Tags: Engineering, Monitors & displays, TV & Home Theater, TVs, Samsung Electronics Co. Ltd., Samsung UNB8500, light-emitting diode
- Product reviews 2009-10-06
- Samsung UN55B8500
- Photo gallery: Samsung UNB8500 seriesIf you watch football or read CNET, chances are you've noticed ads for Samsung's so-called LED TVs. The company has released three series of these super-thin LED-based LCDs so far this year, the 6000, the 7000, and the 8000 models, but it's saved the...
- Tags: Engineering, Monitors & displays, TV & Home Theater, TVs, Samsung Electronics Co. Ltd., Samsung UNB8500, light-emitting diode
- Product reviews 2009-10-06
- Malibal Veda series
- It seems that boutique notebook builder Malibal (pronounced mal-la-bull) is ready to see desktops die. The company specializes in custom-built desktop replacements. No thin-and-lights. No ultraportables. No "mainstream" models. The Veda series is its largest, with an 18.4-inch LCD that can be loaded with Core 2 Quad Extreme QX9300 (ours...
- Tags: Keyboards, Notebooks, Desktops, Microsoft Windows Vista (Longhorn), NVidia Corp., DDR3, desktop
- Product reviews 2009-10-02
- Gadget Gal's daily deals: PSP Go, Dell Latitude notebook, Toshiba Regaza HDTV
- A sale on the soon-to-be-released PSP Go, a Dell Latitude laptop, and a Toshiba Regaza 40-inch LCD HDTV. Here are your daily deals for Monday, September 28, straight from the Gadget Gal: 1. Save 15 percent off of gaming consoles, phones, GPS, MP3 players, video cards and...
- Tags: Coupon, Dell Computer Corp., HDTV, Sony PlayStation Portable, Toshiba Corp., Dell Latitude, TVs, Notebooks, Tv & Home Theater, Personal Technology, Home Entertainment, Hardware, Notebooks & Tablets, Jennifer Bergen
- Blog posts 2009-09-28
- (Photos: Fun with plastic--peripherals that changed gaming)
- er... bluetooth is RF... nt.
- Tags: Bluetooth, photograph, game
- Discussion threads 2009-09-09
- Design & Development Low Cost RFID Antenna
- This paper describes how Low Cost HF (13.56 MHz) antennas can be built and tuned so that their characteristics match the requirements of the high performance reader and third party RF modules. This third edition places greater emphasis on antennas for the higher power readers. In general, the distance at...
- Tags: Antenna, RFID, Leadership, Wireless And Mobility, Security, Biometrics, Management
- White papers 2009-09-07
- Turtle Beach Ear Force X31
- Last month we took the Turtle Beach Ear Force P21s for a spin using its chat function with our PlayStation 3. To be fair, we thought we would even the playing field by checking out the company's Xbox 360 headset and voice chat solution with the Ear Force X31....
- Tags: Game players, audio wire, earcup, Turtle Beach Ear Force X31, P21, headset
- Product reviews 2009-09-04
- Transmission Line Calc 1.0 (Mobile)
- Transmission Line Calc allows you to perform several calculations related to RF transmission lines. After selecting from one of 29 different transmission lines, you specify the length and operating frequency. The characteristic impedance and velocity factor of the cable is displayed, and the attenuation as well as electrical length is...
- Tags: Mobile, Black Cat Systems, Transmission Line, Cable, Network Technology, Advertising & Promotion, Telecommunications, Personal Technology, Networking, Marketing
- Software downloads 2009-09-04
- The RFID Radio Channel Performance in the Vehicular Control
- Most terrestrial wireless communication systems operate in environments that present a multitude of RF propagation problems. The Radio Frequency Identification RFID System, a wireless communication system, applied to vehicular control, is a typical point to point communication system, which one, the radio link formed between the reader, working at the...
- Tags: Performance, Wireless Communication, Radio, Wireless, Instituto Politecnico Nacional, RFID, Wi-Fi, Wireless And Mobility, Advertising & Promotion, Security, Biometrics, Marketing
- White papers 2009-09-01
- iPhone soars, Microsoft 'main loser'
- Well......Beings I don't tie my confidence to a phone or computer I could give two sh1ts about what anyone thinks. Frankly the Samsung Omnia has been an excellent phone and I have no problem letting anyone and everyone see me use it. Plus Windows Mobile is in alot of...
- Tags: Smart phones, Mobile operating systems, Telecom & Utilities, Operating systems, Mobile applications, Handhelds, Wireless and Mobility, Apple iPhone, phone, Microsoft Windows Mobile, Microsoft Corp., AT&T Corp., Microsoft Windows, mobile
- Discussion threads 2009-08-20
- Making the tablet computer "classroom-ready"
- With all the recent conjecture about the rumored Apple tablet (nee "iPad") I found this email particularly interesting. Confessions of a teacher, parent and wanna-be tech geek by John H. Julian I've taught since 1980 and the people to get involved...
- Tags: Teacher, Computer, Tablet Computer, Personal Information, Tablets, Notebooks, Productivity, Hardware, Notebooks & Tablets, Jason D. O'Grady
- Blog posts 2009-08-16
- Netgear unveils 4-port XAVB1004 Home Theater Internet Connection Kit
- still a small portion of TVsthose that do have the built in ethernet are brand new. What most are doing now are hooking up small computers to the TV for weather, movies, games, and anything that they would do at the computer desk. This time they have their...
- Tags: Ethernet, TVs, TV & Home Theater, Wi-Fi, Network technology, NETWORKING, Monitors & displays, XAVB1004 Home Theater Internet Connection Kit, Netgear Inc., TV
- Discussion threads 2009-08-12
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