Q how cross polarised antenna is better than space div antenna

Ans: 

Polarisation diversity Vs Space Diversity

It also depends upon the kind of clutter or area where you want to use these. Cross Polar antenna which has its dipoles placed at +45 and -45 degrees provide us better diversity in a multipath environment where we have lot of reflections,diffractions as chances are mostly that polarisation of the signal transmitted would change by the time it reaches Rx antenna and +-45 degree configuration of dipoles provide maximum probability that the signal will be matched to these phase difference. Another point in favour of crosspolar antennae in city is slant gain which is around 1.5dB. This comes from the angle at which we hold our mobile handsets (mostly at around 45 degrees). 
Space diversity first of all needs space between antennae atlest 10times the wavelength. Secondly the tower structure has to be strong and two different units have to be used. These are the physical limitations. But, it is useful for open areas or highways where chances are most of the times signal transmitted with be in LOS and without phase change.
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In HSDPA how does the network manage the throughput on the Radio Interface for a user connection

Modulation (16QAM, QPSK etc), Coding (convolution coding, fire codes etc), number of codes allocated and scheduling (its a shared resource)

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Benq Joybook S42



Exquisite industrial design

· Classic Victorian style with a blue vine pattern on the cover spread by Laminated Color Metal Coating technology

· Stylish silver bar and diamond-cut logo

· Hairline finish aluminum palm rest

Supreme computing and visual performance The Joybook S42 adopts the latest Intel® Centrino® 2 Processor Technology, providing you the experience of high-definition digital entertainment with twice as fast system performance speed and longer-lasting battery life. Experience the powerful 3D visual effects NVIDIA® GeForce® 9600M GT graphic performance – the best choice for DirectX 10 gaming and Full HD film viewing – has to offer! With the contrast and grayscale in perfect balance, you should expect nothing less than a stuffer-free, life-like video playback! The Joybook S42 renders the clearest and most vivid color and special effects, giving you the finest visual experience ever!

8’ms LED backlight & UltraVivid display The Joybook S42 features BenQs patented UltraVivid technology and DBEF™ (Display Brilliance Enhancement Film) with LED Backlight– increasing the brightness of the high gloss widescreen surface. As a result, a vibrant and noise-free image quality is achieved with a8ms fast response time.

2.0 Mega-pixel webcam hhe 2.0 megapixel QEye webcam keeps you in total control of your digital life – sharing memorable moments with your friends and families through live broadcasts or videoconferencing.

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Compaq Presario V3000 Series Laptop LCD Ribbon


Just the lcd video cable from motherboard to lcd .
not include the camera and lcd inverter.

Price: RM80
Code: V3000-RBN-300812

Fit:
Compaq Presario V3000 V3500 V3700 Series Laptop
HP Pavilion DV2000 Series Laptop
Condition: Used / second
Warranty: 1 month

======================================
contact: Mr Zul 0127319949
COD Area: Plentong, Masai, Pasir Gudang, Ulu Tiram,
----------- Johor Jaya, Taman Molek, Tebrau,
----------- or other area of Johor Bahru, or
----------- Segamat or Bandar Mas, Kota Tinggi Johor
Courier: by Pos Laju
Payment: Bank transfer or cash
Pos Laju Courier: + RM10

Dont forget to see my other ads.
======================================

Other services:
- Format or service laptop immediately at main area, other area can considered.
- Delivery at main area radius. other area can considered.
- Accept faulty, semi-faulty or used laptop.
- Laptop CPU Cooling Fan Services.


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Compaq Presario B1200 Laptop Keyboard 2nd


Price: RM60

Specification:
Layout: US
Letter: English
Condition: Genuine
Colour: Black
Remark: Ribbon cable included

Compatible Part Numbers:
452546-001, 454017-001, V062326AS1, 6037B0023401

Fit Laptop Models:
Compaq Presario B1200 Series
HP Compaq Business Notebook 2210B Series

Condition: Used / second
Warranty: 1 month

==================================
contact: Mr Zul 0127319949
COD Area: Plentong, Masai, Pasir Gudang, Ulu Tiram,
------------ Johor Jaya, Taman Molek, Tebrau,
------------ or other area of Johor Bahru, or
------------ Segamat or Bandar Mas, Kota Tinggi Johor
Courier: by Pos Laju
Payment: Bank transfer or cash
Pos Laju Courier: + RM10

Dont forget to see my other ads.
==================================

Other services:
- Format or service laptop immediately at main area, other area can considered.
- Delivery at main area radius. other area can considered.
- Accept faulty, semi-faulty or used laptop.
- Laptop CPU Cooling Fan Services.

Read More..

Toshiba Qosmio X305 Q725

The Qosmio X305 is the flagship gaming notebook sold by Toshiba, with configurations including dual graphics cards, dual storage drives, and the latest Intel quad-core processors. With a stylish design and great surround sound speakers the Qosmio notebooks walk the fine line between consumer notebooks and super high-end custom gaming notebooks. In this review we cover all aspects of the X305 to give you the information needed to make an informed purchase.

Toshiba Qosmio X305-Q725 Specifications:

  • Intel Core 2 Quad Processor Q9000 (2.0GHz, 1066MHz, 6MB Cache)
  • 4GB DDR3 memory PC3-8500 DDR3
  • Windows Vista Ultimate (64-bit, SP1)
  • NVIDIA GeForce 9800M GTX graphics (1GB GDDR3)
  • 17” WSXGA+ Display 1680x1050 (Glossy)
  • Intel Mobile PM45 Chipset
  • DVDRW-SuperMulti with Labelflash
  • 64GB SSD + 320GB hard drive (7200rpm)
  • Intel 5100AGN WiFi and Bluetooth 2.1 + EDR
  • Stereo speakers with subwoofer
  • Webcam and microphone
  • 180W (19V x 9.5A) Power Supply
  • Battery:8-cell 14.4V 58Wh
  • Weight: 9lbs 5oz
  • Size: 16.2” x12.0” x 1.7” /2.5” with feet
  • Warranty: 1-year parts/labor
  • MSRP: $2,699.99

Build and Design

The Toshiba X305 gaming notebook is one of the larger models weve seen in the office, with the rear of the notebook peaking at 2.5” thick including the feet. Its wedge shape amplifies the height at the rear, making the notebook look twice as thick going from front to back. The X305 is designed to handle a quad-core processor and dual graphics cards which need extra room to get proper cooling ... not to mention fitting the components themselves. To put its size into context, the dual-screen Lenovo ThinkPad W700ds is only 2.1” thick. Overlooking the thickness, the design is stylish and gives you the impression that this is definitely not a standard notebook. The glossy trim, flame paint job, and translucent red plastics really help to get that point across. The paint job could have been more detailed with more realistic flames, but that might have been cost prohibitive with the production process.

Build quality is average, and perhaps should have been better in certain areas. The back cover of the display shows a significant amount of flex due to a large empty space between the lid and screen panel. When holding the laptop with one hand from the side (if your hand is big enough) the lid compresses and squeaks quite a bit. Better support might have resolved this problem and given the lid a much more durable feel. The keyboard was another area that could have been much better. The support beneath the center of the keyboard was fine for heavy typing, but typing near the bottom corner of the keyboard resulted in a "popping" sensation making the keyboard move around.

Display

The 17” glossy display faired very well throughout my testing; which happened to include quite a bit of gaming. The display was bright enough to be clearly visible in a bright office setting while still showing dark shadow detail in games. Colors were vivid and saturated; something you really want on a gaming display. I didn’t notice much lag with the LCD refreshing, but that can be very subjective depending on who is looking at it.

Viewing angles were average with color and brightness drop-off in steep vertical angles. Color inversion was not as much of a problem with horizontal viewing angles so you can share a movie with someone sitting next to you. For comfortable viewing I had the screen set to 90% brightness while in the office and lowered it to 60% at my home with dimmer lighting. My only complaint with the screen is the relatively low resolution of 1680 x 1050, instead of having a WUXGA 1920 x 1200 resolution seen in similar gaming notebooks.

Keyboard and Touchpad

The X305 uses a full-size keyboard with a number pad to take advantage of all of the real estate on its large 17” gaming notebook frame. The keyboard was comfortable to type on with little pressure required to activate each key. Key action is smooth with a mild metallic rattle when fully pressed, ranking average in terms of noise. Some keys towards the bottom left corner would make a louder popping sound, as mentioned in the build section, due to limited support in that area.

Another writer in the office didn’t like the narrow spacebar which was shortened to make way for the full-size keys around it. I personally didn’t have any trouble using the keyboard since I hit the right-center part of the button when typing.

Toshiba included what appears to be an Alps touchpad on the X305 based on the fact that Alps drivers were preinstalled on the system. Windows Update saw it as a Synaptics model and installed drivers as such, causing some confusion over what type of touchpad it really is. The Synaptics drivers had very limited settings, missing all sensitivity options, so it could have just been an error from Windows Vista. The touchpad didn’t seem that responsive and required a heavier touch to accurately move across the display. The surface texture provides a bit of traction without making your finger stick ... something you appreciate after hours of gaming. The large touchpad buttons were easy to trigger and gave shallow feedback when pressed.

Performance

System performance was well above average, given the Intel Q9000 quad core processor and NVIDIA 9800M GTX graphics card. The system handled every mainstream game we threw at it, acting more like a desktop than a notebook. The dual hard drives helped map load times considerably, putting all of the system files on the SSD for quick access and the program information on the 7200RPM storage disk. Day-to-day applications didn’t even make the system break a sweat and mundane tasks like startup and shutdown were some of the quickest we have seen.

High definition movie decoding was not a problem for this notebook and with the HDMI output that supported digital audio out it could easily handle the task of a multimedia hub. Given its high pricetag, huge size, and awesome sound system I think a Blu-ray disc drive would have been a great addition for watching movies on the go.

Toshiba was kind enough to throw in Mirror’s Edge with our Qosmio X305 for testing purposes and I must admit that it provided some of the most enjoyable "testing" of a notebook in quite a long time. With the onboard Physx support and NVIDIA 9800M GTX graphics card the notebook kept up with all of the action even in scenes with lots of activity going on around you. Average framerates with the notebook set to high settings at its native resolution of 1680x1050 were consistently 40FPS and above.

Another office favorite for testing gaming notebooks is Portal, and the X305 performed better than expected with all detail settings at maximum. At the native resolution of 1680x1050 the X305 consistently stayed above 140FPS through fast movement, peaking as high as 160FPS if you were not in view of a portal.

Here are some synthetic benchmarks for comparison with other notebooks:

WPrime is a benchmark similar to Super Pi in that it forces the processor to do intense mathematical calculations, but the difference is this application is multi-threaded and represents dual core processors better. Lower numbers indicate better performance.

Toshiba Qosmio X305-Q725 Specifications:

  • Intel Core 2 Quad Processor Q9000 (2.0GHz, 1066MHz, 6MB Cache)
  • 4GB DDR3 memory PC3-8500 DDR3
  • Windows Vista Ultimate (64-bit, SP1)
  • NVIDIA GeForce 9800M GTX graphics (1GB GDDR3)
  • 17” WSXGA+ Display 1680x1050 (Glossy)
  • Intel Mobile PM45 Chipset
  • DVDRW-SuperMulti with Labelflash
  • 64GB SSD + 320GB hard drive (7200rpm)
  • Intel 5100AGN WiFi and Bluetooth 2.1 + EDR
  • Stereo speakers with subwoofer
  • Webcam and microphone
  • 180W (19V x 9.5A) Power Supply
  • Battery:8-cell 14.4V 58Wh
  • Weight: 9lbs 5oz
  • Size: 16.2” x12.0” x 1.7” /2.5” with feet
  • Warranty: 1-year parts/labor
  • MSRP: $2,699.99

Build and Design

The Toshiba X305 gaming notebook is one of the larger models weve seen in the office, with the rear of the notebook peaking at 2.5” thick including the feet. Its wedge shape amplifies the height at the rear, making the notebook look twice as thick going from front to back. The X305 is designed to handle a quad-core processor and dual graphics cards which need extra room to get proper cooling ... not to mention fitting the components themselves. To put its size into context, the dual-screen Lenovo ThinkPad W700ds is only 2.1” thick. Overlooking the thickness, the design is stylish and gives you the impression that this is definitely not a standard notebook. The glossy trim, flame paint job, and translucent red plastics really help to get that point across. The paint job could have been more detailed with more realistic flames, but that might have been cost prohibitive with the production process.

Build quality is average, and perhaps should have been better in certain areas. The back cover of the display shows a significant amount of flex due to a large empty space between the lid and screen panel. When holding the laptop with one hand from the side (if your hand is big enough) the lid compresses and squeaks quite a bit. Better support might have resolved this problem and given the lid a much more durable feel. The keyboard was another area that could have been much better. The support beneath the center of the keyboard was fine for heavy typing, but typing near the bottom corner of the keyboard resulted in a "popping" sensation making the keyboard move around.

Display

The 17” glossy display faired very well throughout my testing; which happened to include quite a bit of gaming. The display was bright enough to be clearly visible in a bright office setting while still showing dark shadow detail in games. Colors were vivid and saturated; something you really want on a gaming display. I didn’t notice much lag with the LCD refreshing, but that can be very subjective depending on who is looking at it.

Viewing angles were average with color and brightness drop-off in steep vertical angles. Color inversion was not as much of a problem with horizontal viewing angles so you can share a movie with someone sitting next to you. For comfortable viewing I had the screen set to 90% brightness while in the office and lowered it to 60% at my home with dimmer lighting. My only complaint with the screen is the relatively low resolution of 1680 x 1050, instead of having a WUXGA 1920 x 1200 resolution seen in similar gaming notebooks.

Keyboard and Touchpad

The X305 uses a full-size keyboard with a number pad to take advantage of all of the real estate on its large 17” gaming notebook frame. The keyboard was comfortable to type on with little pressure required to activate each key. Key action is smooth with a mild metallic rattle when fully pressed, ranking average in terms of noise. Some keys towards the bottom left corner would make a louder popping sound, as mentioned in the build section, due to limited support in that area.

Another writer in the office didn’t like the narrow spacebar which was shortened to make way for the full-size keys around it. I personally didn’t have any trouble using the keyboard since I hit the right-center part of the button when typing.

Toshiba included what appears to be an Alps touchpad on the X305 based on the fact that Alps drivers were preinstalled on the system. Windows Update saw it as a Synaptics model and installed drivers as such, causing some confusion over what type of touchpad it really is. The Synaptics drivers had very limited settings, missing all sensitivity options, so it could have just been an error from Windows Vista. The touchpad didn’t seem that responsive and required a heavier touch to accurately move across the display. The surface texture provides a bit of traction without making your finger stick ... something you appreciate after hours of gaming. The large touchpad buttons were easy to trigger and gave shallow feedback when pressed.

Performance

System performance was well above average, given the Intel Q9000 quad core processor and NVIDIA 9800M GTX graphics card. The system handled every mainstream game we threw at it, acting more like a desktop than a notebook. The dual hard drives helped map load times considerably, putting all of the system files on the SSD for quick access and the program information on the 7200RPM storage disk. Day-to-day applications didn’t even make the system break a sweat and mundane tasks like startup and shutdown were some of the quickest we have seen.

High definition movie decoding was not a problem for this notebook and with the HDMI output that supported digital audio out it could easily handle the task of a multimedia hub. Given its high pricetag, huge size, and awesome sound system I think a Blu-ray disc drive would have been a great addition for watching movies on the go.

Toshiba was kind enough to throw in Mirror’s Edge with our Qosmio X305 for testing purposes and I must admit that it provided some of the most enjoyable "testing" of a notebook in quite a long time. With the onboard Physx support and NVIDIA 9800M GTX graphics card the notebook kept up with all of the action even in scenes with lots of activity going on around you. Average framerates with the notebook set to high settings at its native resolution of 1680x1050 were consistently 40FPS and above.

Another office favorite for testing gaming notebooks is Portal, and the X305 performed better than expected with all detail settings at maximum. At the native resolution of 1680x1050 the X305 consistently stayed above 140FPS through fast movement, peaking as high as 160FPS if you were not in view of a portal.

Here are some synthetic benchmarks for comparison with other notebooks:

WPrime is a benchmark similar to Super Pi in that it forces the processor to do intense mathematical calculations, but the difference is this application is multi-threaded and represents dual core processors better. Lower numbers indicate better performance.

Read More..

Acer Aspire 4540 2nd notebook laptop Gaming Specs

Acer Aspire 4540 2nd notebook laptop Gaming Specs rm1000

used Laptop with graphics


model processor amd ni ada graphic card, sesuai untuk guna adobe photoshop, autocad, gaming dan lain2 yang banyak guna grafik.

model early year 2010.

laptop ni lg power dan later dr Compaq Presario CQ40 or Acer Aspire 4520/4530.

- Processor: AMD Turion™ II Dual-Core Mobile Processor M520 @ 2.30GHZ
- Chipset: AMD™ M880G chipset
- RAM: 4GB DDR2, Hard Disk Drive: 320GB
- Graphics: ATI Mobility Radeon HD 4200
- Screen: 14.0" HD Acer CineCrystal™ LED-backlit TFT LCD, 16:9 aspect ratio
- Wireless, HDMI, DVD-Writer, Webcam, 3 usb ports, Cardreader,
- Windows® 7 Home Premium
- With Battery, Charger AC Adapter and bag.

Outlook: not very bad [good shape]
system and hardware: still in good condition. battery still long more than 2 hours.
Condition: Used. 2nd hand.
Warranty: 1 month

======================================
contact: Mr Zul 0127319949
COD Area: Plentong, Masai, Pasir Gudang, Ulu Tiram, Johor Jaya, Taman Molek,
          or other area of Johor Bahru [plus RM5], or
          Segamat or Bandar Mas, Kota Tinggi Johor
Courier: by Pos Laju
Payment: Bank transfer or cash
Pos Laju Courier: + RM10

Dont forget to see my other ads.
======================================

Other services:
- Format or service laptop immediately at main area [free transportation], other area can considered.
- Free delivery at main area radius. other area can considered.
- accept faulty laptop or used laptop.
- Laptop CPU Cooling Fan Services.









Read More..