NSW looks to lower electricity prices - Networking - Technology - News - iTnews.com.au
Cuts back residential Solar Bonus Scheme.
The NSW Government has launched an investigation into the state's electricity prices, which rose by up to 13 percent in the past year.
The increase was attributed to rising electricity network charges, which covered costs of maintaining and refurbishing wires, cables, power poles and substations.
Wednesday, October 27, 2010
Saturday, October 23, 2010
The Roots Of Radio Hobbyists
Radio hobbyists can play with their equipment all day without giving a thought to the origins of their hobby. Early radio hobbyists were part of something that was, at the time, new and fairly crazy.
After radio technology was stabilized, there was a steady growth of radio signaling in the fields of navigation of ships and for rescue operations. On the other hand, the amateur radio operators also started to dominate the air. The first documented and famous amateur wireless enthusiast was a then young man named Irving Vermilya born in 1890 when wireless transmission was being born. The young man since age 12 heard Marconi and built his own wireless transmission equipment and was often "heard" telegraphing with ships during that time. In 1911 he became a member of the Radio Club that had been formed. He got himself certified in 1912 when law mandated all wireless operators to be certified. In his own words,
This was pre-audio era, and communication was purely in Morse code. Irving then organized his own amateur group who had regular meetings monthly and would communicate daily wishing "GM" (good morning) and "GN" (good night), some of the first amateur jargon to be used. He also proceeds to describe in his series of articles published in QST magazine in 1917 as to how they managed to lay the telegraph lines and such and how they "drew juice" for the wireless operation from the electric lines instead of relying on batteries.
Meanwhile, apart from the "professionals" and "amateurs", with audio wireless signal transmission there was a new revolution setting in. A Dutch engineer in Hague was the first to make regular wireless transmission via radio. This could be considered the first regular radio broadcast. After this there was slow development until the commercial radio stations came into being.
The requirement to be certified killed the enthusiasm in many amateurs, and the number of amateurs dwindled. But then after WWI, there was a boom. The first radio clubs were formed in 1909 and this was the beginning of the radio hobbies which included radio as a part of the hobby activity.
During the WWI the amateur radio operators were asked to stop their activity and dismantle the equipment. Radio operators in uniform helped in military communications. They got back on the air again by November 1919 again. A similar lull in amateur radio happened during Second World War and got back on air by 1946. After lots of battles over the frequency range that the amateurs can tune into, the amateur radio is here to stay!
At present there are more than 170,000 ham operators which is possibly not the complete picture. It is still increasing. So, with Irving Vermilya was born the amateur radio operation, since he was the first radio hobbyist. After lots of developments, including the discovery of the transistor which greatly decreased the size of the radio equipment, the old ways still remains which included "waiting for someone to signal".
The rules to get oneself certified and licensed included a Morse code proficiency until the World Radiocommunication Conference in Geneva in 2003 that eliminated the need for Morse code proficiency from the licensure tests. Taking effect from February 23, 2007 the Morse code has been eliminated from the tests for amateur radio license tests.
Today's Gizmo - 20/10/2010
A Huge hard drive for your Songs, movies and data!
This hard drive is perfect for storing all your movies, songs and data!
It is fast, silent and uses the latest SATA II interface!
Features
• Formatted capacity : 1 TB
• Serial ATA 3.0Gbps Interface Support
• Improved recording stability over temperature with PMR
• Advanced dynamic FOD control for best data integrity
• Intelligent compensation of external disturbance
• SATA Native Command Queuing Feature
• Device Initiated SATA Power Management
• Staggerd Spin-up Support
• Environment friendly product with RoHS compliance
• Improved performance with dual-ARM based firmware
• ATA S.M.A.R.T. Compliant
• ATA Automatic Acoustic Management Feature
• ATA 48-bit Address Feature
• ATA Device Configuration Overlay Feature
• NoiseGuard™
• SilentSeek™
Specifications
Drive Configurations
HD103SI
Capacity : 1 TB
Interface : SATA 3.0 Gbps
Buffer memory : 32 MB
Rotational Speed : 5,400RPM
Performance Specifications
Average Seek time(typical) : 8.9 ms
Average Latency : 5.52 ms
Data Transfer Rate / Media to/from Buffer(Max.) :140 MB/sec
Data Transfer Rate / Buffer to/from Host(Max.) : 300 MB/sec
Drive Ready Time(typical) : 12 sec
Reliability Specifications
Non-recoverable Read Error : 1 sector in 10^15 bits
Start/Stop Cycles : 50,000
Acoustics
Idle : 2.70 Bel
Performance Seek : 2.90 Bel
Environmental Specifications
Temperature / Operating : 0 ~ 60 °C
Temperature / Non-operating : -40 ~ 70 °C
Humidity(non-condensing) / Operating : 5 ~ 90 %
Humidity(non-condensing) / Non-operating : 5 ~ 95 %
Liner Shock(1/2 sine pulse) / Operating : 70 G
Liner Shock(1/2 sine pulse) / Non-operating : 300 G
Altitude(relative to sea level) / Operating : 300 to 3,000 m
Altitude(relative to sea level) / Non-operating : 300 to 12,000 m
Power Requirements
Voltage : +5V±5%, +12V±10%
Spin-up Current (Max.) : 2.0A
Seek (typical) : 5.6W
Read/Write (typical) : 6.2W
Idle (typical) : 5.0W
Standby (typical) : 0.5/0.8 W
Sleep (typical) : 0.5/0.8 W
Physical Dimension
Height (Max.) : 26.1 mm
Width : 101.5 mm
Length : 147.0 mm
Weight (avg.) : 640 g
3 Years Warranty by Samsung
More 3.5" Hard Drive on www.gizmomart.com.au :
> Samsung 1.5TB HD154UI 3.5" SATAII Desktop Hard Drive
> Seagate 1.5TB/1500GB 7200rpm/32mb SataII HDD
> Seagate 1TB/1000GB 7200rpm/32mb SataII HDD
> WesternDigital Caviar Green 1.5TB/32MB/3Gbs SATA Hard Drives
* Picture and description is for illustrative purposes only. Actual product may differ from that pictured.
Today's Gizmo - 15/10/2010
Forget the brown paper bag and carry your wine in style!
Features
These unique and elegant wine cases are perfect for picnics, dinner parties, concerts or travel.
Made from wood and covered in a fabulous canvas picture, these beautiful cases put some glamour to your picnic or BBQ.
Size : 23 x 12 x 36cm
More Products on www.gizmomart.com.au :
* Picture and description is for illustrative purposes only. Actual product may differ from that pictured.
Wednesday, October 20, 2010
Graphene amplifiers to increase wireless chip efficiency - Hardware - Technology - News - iTnews.com.au
Graphene amplifiers to increase wireless chip efficiency - Hardware - Technology - News - iTnews.com.au
Triple-mode transistors built from one-atom-thick carbon.
US researchers have built and tested a graphene amplifier that could improve future Bluetooth, radiofrequency identification (RFID) and other wireless devices.
The team claimed to be the first to demonstrate a triple-mode, single-transistor amplifier that was based on graphene and had greater functionality than conventional semiconductor devices.
Graphene is a one-atom-thick sheet of carbon that conducts electricity 100 times faster than silicon and won its discoverers a Nobel Prize in Physics this year.
The amplifier exploited the graphene's ambipolar nature - its ability to reactively use either negative or positive electric carriers, depending on the input signal.
Triple-mode transistors built from one-atom-thick carbon.
US researchers have built and tested a graphene amplifier that could improve future Bluetooth, radiofrequency identification (RFID) and other wireless devices.
The team claimed to be the first to demonstrate a triple-mode, single-transistor amplifier that was based on graphene and had greater functionality than conventional semiconductor devices.
Graphene is a one-atom-thick sheet of carbon that conducts electricity 100 times faster than silicon and won its discoverers a Nobel Prize in Physics this year.
The amplifier exploited the graphene's ambipolar nature - its ability to reactively use either negative or positive electric carriers, depending on the input signal.
Thursday, October 14, 2010
Hot Offers from Microsoft
Microsoft Store has some 3 new exciting publisher and consumer offers that you will want to take advantage of right away:
Save 30% on Xbox 360 4GB bundle from the Microsoft Store! Offer valid while supplies last!![]()
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Limited Time only! Get the Windows 7 Family Pack from The Microsoft Store! Only $149 for 3 licenses of Windows 7!![]()
Save 30% on Xbox 360 4GB bundle from the Microsoft Store! Offer valid while supplies last!
Save $240 when you buy a Toshiba Satellite P505 with Windows 7 anytime upgrade from the Microsoft Store!
Limited Time only! Get the Windows 7 Family Pack from The Microsoft Store! Only $149 for 3 licenses of Windows 7!
Today's Gizmo - 14/10/2010
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Monday, October 4, 2010
Activities For Radio Hobbyists
Amateur radio or ham is largely a hobby activity. The majority of thel hobby time is spent on making contact and having conversations with people in distant regions and from different cultures. Two way communications, identifying their location and station, zone, region and place is the usual custom. This is always followed by other casual communications. If the contact is made for a contest to make two way communication with as many stations or ham radio operators as possible, this all the information that is shared.
DX-ing and DX-peditions: An amateur radio operator's main hobby is to make contact with as many stations as possible from as many parts of the world as possible. DX stands for Distant Stations. The DX-ing usually is followed with the QSO. (a Q code., see below) which means "a conversation".
DX-peditions are different in the sense that they are expeditions organized / planned solely for the purpose of making contacts with some special or rare stations and regions. Some people travel long distance just to make contact with some unrepresented region or place.
Radio Frequency scanners available now a days form the tool of great use in these attempts. The radio scanner scans for signals until a strong signal is found and so on.
QSL cards: The Q code is a standardized collection of three-letter message encodings, all starting with the letter "Q", initially developed for commercial radiotelegraph communication, and later adopted by other radio services, especially amateur radio. In today's audio signal transmission age, the Q codes are not essential. but still in use and are viewed as a sort of tradition.
As a part of DX-ing and DX-peditions the QSL card or the proof of contact card is shared. QSL is one such Q-code that means "I acknowledge receipt". The common practice was that the ones who made contact at a particular frequency exchange a QSL card in the mail to confirm their contact and conversations. These QSL cards can be used as a proof of their making contact and amateur operators who make contact with a certain number of other amateur radio operators in a specified time is awarded. Moreover, they are distinguished and honored since they are deemed to be efficient amateur radio operators.
Remote region contacting: Some countries have less amateur radio operators, and making contact with these is considered special. So, when a radio amateur from these regions makes contact, other ham operators flock to make communication with this / these hams. Making contact with these less represented places has its awards and special considerations in the award programs.
Hamfests: Social events for the ham families and friends. It's something akin to the family oriented social fests where there are sales, exchanges, meetings and fun. Similarly, the fest is filled with selling and exchanging hams, meeting real life ham friends and fun events for a day or sometimes over few days.
Discussion groups and Nets: Ham operators form a discussion group based on common interests other than ham or it can also be a ham related discussion group and they can form nets or networks.
If a radio hobbyist gets involved with all of these different activities, he or she is sure to never be bored. Look into some of them, and see if you would like to get involved.
Today's Gizmo - 01/10/2010
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Today's Gizmo - 30/09/2010
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