Progress Through Activity

WESTLAKES
Amateur Radio Club Inc.

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The Westlakes Weekly Broadcast.

The Westlakes news broadcast is transmitted 
every Sunday at 9am on 2 meters at 146.900 MHz
(the Hunter Radio Group's Repeater)

 



 

WARC News 3-11-2019 

Through the week we had the usual Wednesday cleaning detail with Chief Cleaner, Ken VK2UTC, carrying out a major vacuum and clean of the club. His assistant, Barry VK2FIN, started cleaning the common room chairs with the club’s (donated) high pressure water cleaner to find the pressure very low. The Chief, Ken, saw this and exclaimed ‘don’t use that heap, use mine it’s very high pressure – you need to be careful though, it could cut through the plastic chairs’. So, Barry dutifully changed over the cleaners to find the chair-cutting super cleaner had the same pressure as the club cleaner. They did the best they could with the equipment however, and returned the chairs to the common room, slightly cleaner than they were. Jamie VK2YCJ was also at the club on Wednesday testing an antenna analyser.

Through the week, of course we also had our usual net broadcasts and we would like to remind all listeners of the 80m nets on 3.565 MHz. at 0930 Monday’s, Wednesday’s and Friday’s, ‘Stone the Crows’ on 3.588 MHz at 0600 Saturday and the EZB Net on 146.900 (at the moment) at 0800 Saturday. Why not call in and say hello.

It was a very busy day yesterday at the club. The car park was full with all modes of road transport from a motor bike to cars and a motor home. Each of the rooms was also packed with chatter and activity on all areas of knowledge (as it was too hot outside the seat of knowledge was quite barren). In the meeting room discussion ranged from design detail of the Tesla Model 3 car to the status of the high-speed data cabling in the club and onto the availability of electric storage heaters toady. The common room also covered a myriad of subjects. In the activity room John VK2ASU and Charlie VK2CLH were working on a number of investigative and repair projects.

With the wind speed much lower than it was last weekend Ken VK2UTC and Michael VK2CCW repaired the club 40m dipole and tested it out – a flat 1: 1 up to 7.2 MHz and no antenna tuner!

Speaking of the wind, Barry VK2FIN, checked out the club 415 V consumers’ mains after Charlie VK2CLH reported that the wind had blown a branch onto the mains during last week’s windstorm. The conductors are now free of debris.

Today’s lucky meat raffle winner was Charlie VK2CLH.

If you have any news you would like included in the weekly broadcast please communicate it (email, SMS, wireless, etc.) to our Treasurer Jeremy or President Barry.

From a Minor Oscillation to a Planet-Wide Communications System

After Orsted’s discovery in 1820 of a magnetic influence from a circuit carrying an electric current, the two separate phenomena of electricity and magnetism were tied together to form the new science of electromagnetism. During the period from 1835 to 1842, Professor Joseph Henry of Princeton University in the United States, while studying discharge currents from Leyden Jars (now known as capacitors) discovered that inductance in the circuit caused an oscillatory current. Of interest is that the original unit of measurement for capacitance was the jar – this later became the Farad after the scientist Michael Faraday. This discovery was, of course, the precursor of the tuned circuit which eventually resulted in the development of today’s telecommunication industry.
From these early days, Australia has been at the forefront of telecommunications system development and/or installation. We often hear of the first electric lighting in Tamworth and other power engineering milestones, but Australia was a major player in the telecommunication industry.

Some of these milestones include:
In 1854 the first telegraph line linked Melbourne and Williamstown.
In 1859 an undersea telegraph cable was laid between mainland Australia and Tasmania (~360km) by Samuel Walker McGowan. The cable was erratic and lasted only 3 years. McGowan studied under Samuel Morse.
In 1876 the telegraph cable from Sydney to New Zealand was commissioned.
In 1880 telephone exchanges open in Melbourne with 100 lines, followed closely by Sydney and then Brisbane.
In 1885 the TELEPHANE, an invention which used telegraph lines to transmit visual information was an important precursor to television. It was invented by Henry Sutton in Ballarat.
In 1898 the first recorded use of wireless telegraphy in Australia – a 500m distance was covered in Adelaide.
And so this continued through the twentieth and into the twenty first centuries
Fast forwarding to the twenty first century, Dr John O’Sullivan an Australian electrical engineer whose work in the application of Fourier transforms to radio astronomy led to his invention with colleagues of a core technology that made wireless LAN fast and reliable. This technology was in 1994 patented by CSIRO and forms part of the 802.11a, 802.11g and 802.11n Wi-Fi standards and thus O'Sullivan is also credited with the invention of Wi-Fi.

Now to Coming Events

Saturday 9th November - November Meeting Day.
Sunday 24th November - Westlakes annual Christmas Party will be held at the Cardiff RSL with an all-you-can-eat Lunch time buffet. Those wishing to attend need to notify the Treasurer and pay the $20.00 per head. If more convenient, just do a direct deposit into our bank account stating the word Christmas and your callsign. There will also be a lucky door prize, and no it’s not a Meat Tray and it will be “Free. (The door prise that is.) All you have to do is be there, having previously paid your $20.00 of course. PLEASE NOTE THAT NEXT SATURDAY 9 NOVEMBER WILL BE THE LAST DAY TO BOOK YOUR TICKETS.

And lastly, a very special birthday wish to Ray Young VK2ARY/VK2ZL, because as at yesterday Ray became 92 years young. All the best Ray from all your Amateur Fraternity. It has been advised to our News Room that your next stop is a century – not out.
 


 

 

 

 


Westlakes Amateur Radio Club Inc. York Street, Teralba NSW