What are the UMTS frequencies and channel spacing?
UMTS and 3G FAQ pageand 2010-2025 MHz Time Division Duplex (TDD, TD/CDMA) Unpaired, channel spacing is 5 MHz and raster is 200 kHz. Tx and Rx are not separated in frequency and 2110-2170 MHz Frequency Division Duplex (FDD, W-CDMA) Paired uplink and downlink, channel spacing is 5 MHz and raster is 200 kHz. An Operator needs 3 - 4 channels (2x15 or 2x20 MHz) to be able to build a high-speed, high-capacity network.
What is UMTS?
UMTS and 3G FAQ pageUMTS is one of the Third Generation (3G) mobile systems being developed within the ITU's IMT-2000 framework. It is a realisation of a new generation of broadband multi-media mobile telecommunications technology. The coverage area of service provision is to be world wide in the form of FLMTS (Future Land Mobile Telecommunications Services and now called IMT2000). See similar questions...
Is there a replacement available for the KTR-905 with 8.33 Khz channel spacing?
Southeast Aerospace FAQNo. Bendix/King did not produce a repalcement unit that is capable 8.33 Khz channel spacing. You must install a different radio with this capability. See similar questions...
What version of the GNS-XLS will interface with VHF comms that have 8.33 khz channel spacing?
Southeast Aerospace FAQGNS-XLS Part # 17960-0102-00XX with software Mod level 6 and all versions of P/N 17960-0203-00XX will channel 8.33 khz Honeywell Primus II and Collins Proline II radio systems. See similar questions...
What is the grid layout? How big? What spacing?
Frost Fighter Clear View QuestionsThis question comes up a lot. The grid layout looks like the illustration below. The minimum length is 40 and the maximum is 60 inches. The only thing that sticks to the glass is the heating element. Clear View Defrosters operate on 12 Volts DC. The amperage is relative to the size of the grid so each installation varies. The range is from 8 to 16 amps. See similar questions...
What is the difference between cdma2000 and UMTS?
UMTS and 3G FAQ pageCdma2000 and UMTS were developed separately and are 2 separate ITU approved 3G standards. Cdma2000 1xRTT, cdma2000 1xEV-DO (EVolution, Data Only) and future cdma2000 3x were developed to be backward compatible with cdmaOne. Both 1x types have the same bandwidth, chip rate and it can be used in any existing cdmaOne frequency band and network. Backward compatibility was a requirement for successful deployment for USA market. It is easy to implement because operators do not need new frequencies. See similar questions...
How is data compression done in UMTS?
UMTS and 3G FAQ pageVideo and music compression will be done in application level. 3G phone (and network application servers) will have programs (or you will be downloading them) that records and displays video or music. Those programs have build-in data compression features. Good examples are MP3 and other music programs. MP3 codec includes data compression and most current music player understands it. For image and video there are several standards including JPEG, MPEG-4, H.263, Microsoft media player etc. See similar questions...
When are the UMTS networks in service?
UMTS and 3G FAQ pageJapan and Korea has 3G services running and in December 2001 two UMTS networks have been launched, but UMTS mobiles will arrive 3Q/2002. Quite a few UMTS networks will be launched in early 2003 in Europe. See similar questions...
What are the frequencies?
Frequency Specific MicrocurrentFrequencies are measured in hertz or pulses per second. The frequencies are used on two channels and it seems to make a difference what channel you put which frequency on. The frequency thought to address or neutralize the condition is put on Precision channel A or on the channel that fires first. The frequency thought to address the tissue is put on channel B. See similar questions...
How long will the frequencies stay in the bottle?
Eagle Research LLC | Bruce Taylor CEO | Frequently Asked Que...They will stay indefinitely unless you let sun light shine on the bottle. The ultra-violet rays will remove the frequencies. You can also destroy your remedy by placing the bottle in or near an electric motor or some television and computer screens, which can produce such fields. The remedy is best kept by storing it in a kitchen cupboard or anywhere else where it will not be affected. Remedies are not destroyed in cold or hot temperatures, within reason. Back to Top | Back to FAQ See similar questions...
What frequencies will the SignaLink work on?
SignaLink FAQThe SignaLink is not frequency dependent so it will work on any frequency your radio can operate on. The SignaLink only controls the signals going in and out of the radio so it does not affect the actual operating frequency. If your radio can receive the signal, the SignaLink will deliver it to your sound card for processing! See similar questions...
what frequencies do wireless applications operate?
Center for Wireless TelecommunicationsThe frequency varies tremendously depending on the specific device and the application being used. Below is a general run-down of several major frequency bands, along with some common devices operating in them: How wide is the range for wireless devices? Depending on the design and application of the device, range varies tremendously. While some devices (such as RF tags) operate over a few inches, other devices (such as those used in wireless computer networking) operate over tens of miles. See similar questions...
Is there a transition period between UMTS and the present system?
UMTS and 3G FAQ pageThere will probably not be a "transition" period in that sense, because GSM systems will keep on operating at least next ten years. (some old 1G networks are still running round the world). Only limitations for operators are the GSM license terms and customer preferences. UMTS networks will just be added to mobile landscape. See similar questions...
How does UMTS paging work?
UMTS and 3G FAQ pagePaging Occasion = {(IMSI div K) mod (DRX cycle length div PBP)} * PBP + n * DRX cycle length + Frame Offset Where n = 0,1,2... as long as SFN is below its maximum value. In FDD mode, Np = (18,36,72,144) is the number of Page Indicators per frame, and is given in IE "Number of PI per frame", part of system information in FDD mode.' FDD) Chapter 5.3.3.10 shows how Pq is calculated for channel mapping, the structure of paging indicator channel and the mapping of paging indicators Pq to PICH bits. See similar questions...
Which modulation scheme is being used in UMTS?
UMTS and 3G FAQ pageUMTS WCDMA modulation is Quadrature Phase Shift Keying (QPSK) with Root-raised cosine pulse shaping filters (roll off = 0.22) See similar questions...
What are the UMTS Mobile Multimedia services?
UMTS and 3G FAQ pageUMTS Forum's Market Aspects Group has identified seven common lifestyle attributes for mobile multimedia applications. Here is a list of possible type of services that will be available in 3G networks: Fun: WWW, video, post card, snapshots, text, picture and multimedia messaging, datacast, personalisation applications (ring tone, screen saver, desk top), jukebox, virtual companion / pet .. See similar questions...
Can UMTS mobile location be tracked?
UMTS and 3G FAQ pageThe wideband nature of the UTRA/FDD facilitates the high resolution in position location. The duration of one chip (3.84Mcps) correspond to approximately 78 meters in propagation distance. If the delay estimation operates on the accuracy of samples/chip then the achievable maximum accuracy is approximately 20 meters. There are other inaccuracies that will cause degradation to the positioning but 20 meters can be considered as best possible positioning performance. See similar questions...
How can I get the channel?
BBC America - Frequently Asked QuestionsBBC AMERICA is available on digital cable systems throughout the U.S. and via satellite on DIRECTV (1-800-531-5000 or www.directv.com) and Echostar's DISH Network (1-800-333-3474 or www.dishnetwork.com). If BBC AMERICA is not available in your area, please contact your local service provider and request the channel. Our experience shows that the more operators hear from their customers, the more likely they are to add the channel to their system. See similar questions...
Can I put spacing on my plate?
FAQs - Personalised Plates New ZealandIf you have less than the maximum number of characters on your plate you are automatically able to have some spacing on your plate. Full spaces can be divided down to 1/2 or 1/4 spaces. Also, for every "I" or "1" in your plate, you can have an additional 1/2 space to play around with. See similar questions...
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