Andrew’s Computers & Networking

Fdd White

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when I start my PC, some times the monitor does not go on and remains blank.?

I have some problem with my PC. Hope you will help me out. My PC configuration is Intel Celeron 855 MHz, ASUS motherboard, Maxtor 20 GB HDD, LG 15" monitor, LG 52x CD ROM, 1.44" FDD dual booting with Windows 2000 Professional on C:, total 4 Windows partitions and Red Hat Linux 9.0 on 4 GB space. I have three problems:

1) Whenever I insert any CD, the monitor screen turns white and the system hangs. This happens both in Windows and Linux.

2) Also when I start my PC, some times the monitor does not go on and remains blank.

3) Also my Windows is infected with virus named "VBS_PRELOAF.A," I think the first two problems are related to hardware. Tell me what should I do.

Regarding your problem, I think this is a problem of some multimedia program, which has caused the error. Please try to locate any such multimedia application that you might have installed recently and also after which the problem started occurring. As another solution, I would suggest that you reinstall Windows after taking the back up of your programs and data. Regarding your second problem, most likely this is an issue related to the fault of your motherboard. However, sometimes Active X drivers and damaged VGA drivers also causes this problem. Logically, first of all reload VGA drivers and remove active X drivers. If this solves your problem, then you can blame it on the drivers, else you may have to get your motherboard checked. Regarding your problem related to VBS_PRELOAF.A, please log on to www.trendmicro.com and search for details including the method to remove it from the virus encyclopedia.

UMTS frequency bands

UMTS-FDD

UMTS-FDD is designed to operate in the following paired bands:

Operating Band

Frequency Band

Common Name

UL Frequencies UE transmit (MHz)

DL Frequencies UE receive (MHz)

Channel Number (UARFCN) UL

Channel Number (UARFCN) DL

Region

I

2100

IMT

1920 - 1980

2110 - 2170

9612 - 9888

10562 - 10838

Europe (O2, Vodafone, Orange), Asia, Oceania, Brazil

II

1900

PCS

1850 - 1910

1930 - 1990

9262 - 9538 additional 12, 37, 62, 87, 112, 137, 162, 187, 212, 237, 262, 287

9662 - 9938 additional 412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687

North America (AT&T, Bell Mobility, Telus, Rogers), Chile

III

1800

DCS

1710 - 1785

1805 - 1880

937 - 1288

1162 - 1513

Europe, Asia, Oceania

IV

1700

AWS

1710 - 1755

2110 - 2155

1312 - 1513 additional 1662, 1687, 1712, 1737, 1762, 1787, 1812, 1837, 1862

1537 - 1738 additional 1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087

USA (T-Mobile), Canada (WIND Mobile)

V

850

Cellular

824 - 849

869 - 894

4132 - 4233 additional 782, 787, 807, 812, 837, 862

4357 - 4458 additional 1007, 1012, 1032, 1037, 1062, 1087

Americas (AT&T, Bell Mobility, Telus, Rogers), Oceania

VI

800

830 - 840

875 - 885

4162 - 4188 additional 812, 837

4387 - 4413 additional 1037, 1062

Japan (NTT docomo)

VII

2600

IMT-E

2500 - 2570

2620 - 2690

2012 - 2338 additional 2362, 2387, 2412, 2437, 2462, 2487, 2512, 2537, 2562, 2587, 2612, 2637, 2662, 2687

2237 - 2563 additional 2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912

Europe (future)

VIII

900

GSM

880 - 915

925 - 960

2712 - 2863

2937 - 3088

Europe, Asia, Oceania

IX

1700

1749.9 - 1784.9

1844.9 - 1879.9

8762 - 8912

9237 - 9387

Japan (E Mobile, NTT docomo)

X

1700

1710 - 1770

2110 - 2170

2887 - 3163 additional 3187, 3212, 3237, 3262, 3287, 3312, 3337, 3362, 3387, 3412, 3437, 3462

3112 - 3388 additional 3412, 3437, 3462, 3487, 3512, 3537, 3562, 3587, 3612, 3637, 3662, 3687

XI

1500

1427.9 - 1452.9

1475.9 - 1500.9

3487 - 3587

3712 - 3812

XII

700

SMH

698 - 716

728 - 746

36123678 additional 3702, 3707, 3732, 3737, 3762, 3767

38373903 additional 3927, 3932, 3957, 3962, 3987, 3992

USA (future) (lower SMH blocks A/B/C)

XIII

700

SMH

777 - 787

746 - 756

37923818 additional 3842, 3867

40174043 additional 4067, 4092

USA (future) (upper SMH block C)

XIV

700

SMH

788 - 798

758 - 768

38923918 additional 3942, 3967

41174143 additional 4167, 4192

USA (future) (upper SMH block D)

Band

TS 25.101 DL to UL Frequency Separation (MHz)

TS 25.101 Center Frequency Range (MHz)

TS 25.101 UARFCN Equation

TS 25.101 UARFCN Range

Test Set "DL Channel" Range

I (IMT-2000)

190

2112.4 - 2167.6, increment = 0.2

5 * (center freq in MHz)

10562 - 10838

10562 - 10838

II(U.S. PCS)

80

1932.4 - 1987.6, increment = 0.2

5 * (center freq in MHz)

9662 - 9938

9662 - 9938

1932.5 - 1987.5, increment = 5

5 * ((center freq in MHz) - 1850.1 MHz)

412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687

412, 437, 462, 487, 512, 537, 562, 587, 612, 637, 662, 687

III(DCS/PCS)

95

1807.4 - 1877.6, increment = 0.2

5 * ((center freq in MHz) - 1575 MHz)

1162 - 1513

1162 - 1513

IV

400

2112.4 - 2152.6, increment = 0.2

5 * ((center freq in MHz) - 1805 MHz)

1537 - 1738

1537 - 1738 *

2112.5 - 2152.5, increment = 5

5 * ((center freq in MHz) - 1735.1 MHz)

1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087

1887, 1912, 1937, 1962, 1987, 2012, 2037, 2062, 2087 *

V(US Cellular)

45

871.4 - 891.6, increment = 0.2

5 * (center freq in MHz)

4357 - 4458

4357 - 4458 #

871.5, 872.5, 876.5, 877.5, 882.5, 887.5

5* ((center freq in MHz) - 670.1 MHz)

1007, 1012, 1032, 1037, 1062, 1087

1007, 1012, 1032, 1037, 1062, 1087 #

VI(Japan 800)

45

877.4 - 882.6, increment = 0.2

5 * (center freq in MHz)

4387 - 4413

4387 - 4413 +

877.5, 882.5

5 * ((center freq in MHz) - 670.1 MHz)

1037, 1062

1037, 1062 +

VII

120

2622.4 - 2687.6, increment = 0.2

5 * ((center freq in MHz) - 2175 MHz)

2237 - 2563

2237 - 2563

2622.5 - 2687.5, increment = 5

5 * ((center freq in MHz) - 2105.1 MHz)

2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912

2587, 2612, 2637, 2662, 2687, 2712, 2737, 2762, 2787, 2812, 2837, 2862, 2887, 2912

VIII

45

927.4 - 957.6, increment = 0.2

5 * ((center freq in MHz) - 340 MHz)

2937 - 3088

2937 - 3088

IX

95

1847.4 - 1877.4, increment = 0.2

5 * (center freq in MHz)

9237 - 9387

9237 - 9387 *

X

400

2112.4 - 2167.6, increment = 0.2

5 * ((center freq in MHz) - 1490 MHz)

3112 - 3388

3112 - 3388 *

2112.5 - 2167.5, increment = 5

5 * ((center freq in MHz) - 1430.1 MHz)

3412, 3437, 3462, 3487, 3512, 3537, 3562, 3587, 3612, 3637, 3662, 3687

3412, 3437, 3462, 3487, 3512, 3537, 3562, 3587, 3612, 3637, 3662, 3687 *

Deployment in other frequency bands is not precluded.

UMTS-TDD

UMTS-TDD is designed to operate in the following bands:

Frequencies (MHz)

Channel Number (UARFCN)

1900 - 1920

9512 - 9588

2010 - 2025

10062 - 10113

1850 - 1910

9262 - 9538

1930 - 1990

9662 - 9938

1910 - 1930

9562 - 9638

2570 - 2620

12862 - 13088

Frequency bands deployment

Further information: List of UMTS networks

In general, the various UMTS bands are deployed as follows:

Band I (W-CDMA 2100) in Europe, Africa, Asia, Australia (all carriers' metropolitan networks), New Zealand (ITU Region 1) and Brazil (part of ITU Region 2)

Band II (W-CDMA 1900) in North America and South America (ITU Region 2)

Band IV (W-CDMA 1700 or Advanced Wireless Services) in the United States (T-Mobile USA) and Canada (WIND Mobile)

Band V (W-CDMA 850) in Australia (Telstra NextG Network), New Zealand (XT Mobile Network), Brazil, Canada, the USA, Guatemala, Costa Rica, Venezuela, other parts of South America, Israel, parts of Asia (ITU Region 2 and ITU Region 3), Poland

Band VIII (W-CDMA 900) in Europe, Asia, Australia (Optus and Vodafone regional/country 3G networks), New Zealand (ITU Region 1 and ITU Region 3), and Venezuela (Corporacin Digitel, C.A.)

Multi-band

Further information: List of HSPA mobile phones, List of UMTS networks

Today, most mobiles support multiple bands as used in different countries to facilitate roaming. These are typically referred to as multi-band phones. Dual-band phones can cover networks in pairs such as 2100/900 (bands I/VIII) in Europe, Middle East, Asia, Oceania or 1900/850MHz (bands II/V) in North and South America. With the recent release of AWS spectrum (band IV) in North America, the dual-band combo of 1700/2100 is also becoming popular there.

European/Asian tri-band phones typically cover the 900, 1800 and 2100MHz bands giving good coverage in Europe and allowing very limited use in North America, while North American tri-band phones utilize 850, 1900 and 2100MHz for widespread North & South American service and good coverage for worldwide use thanks to the popularity of the 2100MHz spectrum, though the AWS cousin of 900/1700/2100 doesn't enjoy the same footprint at home. The I/II/V or 2100/1900/850 combo is as close to a world phone as possible at this time.

Most UMTS phones also operate on GSM as well, supporting EDGE to ensure data coverage where HSPA still lacks coverage. Note however, that while a phone may have overlapping GSM & UMTS frequency support, being tri-band/quad-band in GSM/GPRS/EDGE does not imply the same support for UMTS, as was the case with many early 2100MHz-only UMTS devices.

See also

3GPP

Cellular frequencies

GSM frequency bands

List of UMTS networks

Mobile network code

Roaming

United States 2008 wireless spectrum auction

White spaces (radio)

References

^

^ http://www.pocket.co.il/community/showthread.php?t=230182

External links

3GPP Specifications for group: R4 - Frequencies info for UMTS (TS 25.101/102/104/105)

UARFCN to Frequency Calculator - Converts DL UARFCN to frequency band and other information (scroll to bottom of page)

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