In 1927 Sir John returned to research work having made original contributions to physics in conjunction with W H Bragg (1905-1911) starting in Adelaide at the University involving radioactivity & Rutherford’s nuclear atom in 1911. At Sydney University Sir John, as first & only Professor of Electrical Engineering in any Australian University until 1946, was […]
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Author: Yves Bernier
May 2021 Lecture – Ice Boat
We had a blockbuster lecture lined up for Wednesday 19th May 2021, Professor Simone Douglas, daughter of our honourable member John Douglas VK2ZWD. Watch video of lecture on VK2MB-TV Check out Professor Douglas’ details here: https://www.newschool.edu/parsons/faculty/simone-douglas/ Professor Simone Douglas will talk about her art + science project Ice Boat. Situated near Broken Hill and 7 years in R&D, Ice Boat will […]
1-May-2021 – The Convict 100 race & radios
My weekend radio adventure at the Convict 100 by Dom VK2JNA A successful event. Some incidents but nothing major: broken thumbs, collar bone, many scrapes & scratches & broken bikes. Didn’t have to evac by helicopter anyone (this time). I took out a few people by road from CP18 with roof rack stuffed with bikes. […]
John Moyle Field Day 2021
(Update, 20 April: Rod VK2ZZM has uploaded a video of the event.) The worst rainstorm weekend of the century was not going to put a damper on the MWRS attempt at the John Moyle Memorial Field day 2021 the 20-21 March 2021 Thanks to Rod (and his magnificent shed) for hosting us! We could operate […]
August 2020 Lecture – Commercial Blasting with Explosives
The 19 August 2020 MWRS lecture was held … as expected … on a video conference platform! Check it out on VK2MB-TV.
VHF Elevated Feed Ground Independent Antenna Base
I’ve got many VHF aerials with a 5/16″ 26TPI fitting. They are typically only good on a car (middle of the roof!?!). They are difficult to use at field days. I’ve used mounts with radials before but the radials became a hazard or annoyance. I decided to build a VHF Elevated Feed Ground Independent Aerial […]
2m member RF survey
Since all meetings at the club house had to be cancelled for few months, members decided to meet on the air with a weekly net ran on our club’s 2m repeater. This has opened the opportunity to perform a 2m RF survey between the member’s QTHs by having each members listen on the repeater input […]
Yaesu FT-60 screen protector
The Yaesu FT-60 is one of the rare radio which has attracted mainly positive reviews (FT-2900 is another one). In addition to all the good things about this radio, the following features not often mentioned were on my selection list: Mechanical on/off switch, when the radio if off, it is off! Real squelch and volume […]
John Moyle Field Day 2020
Over the 21-22 March 2020 weekend, the MWRS activated a “portable” station at the Polblue Campground in the Barrington Tops National Park. Where present: Andrew VK2EAH Connie VK2CON Greg VK2XE, Declan & Cara Nick VK2FS Phil VK2APL Rod VK2ZZM Ross VK2FRET Tim VK2BT Yves VK2AUJ Zara FZYP We piled up 229 contacts thanks to Ross […]
February 2020 Lecture – HF Magnetic Loop Antennas
January 2020 Lecture – Fixing Switchmode Power Supplies
Watch on VK2MB-TV! For more information about the circuit examined in this lecture, please refer to the following diagram, which Dave created:
Jan 2020 – 5th Wed – AM only
The first wireless (and wired, for this matter) tele-communications required skills to transmit and receive, mainly using dits and dahs! Then came Amplitude Modulation allowing phone communication. If you were able to talk or listen, you could operate a radio … or a phone. Car radios became popular with many portable units you could use […]
Fri 3-Jan-2020 Paint Working Bee
Work started at 0745 and was finished by about 1000. Many hands made quick work. Thanks to: Carmel Phil Charlie Grant Connie Yves Richard
Sun 22-Dec-2019 – Xmas BBQ at the GGH
November 2019 Lecture – APOLLO UNIFIED S-BAND (USB) COMMUNICATIONS AND
The USB uplink handles voice, telecommand (low bandwidth), and ranging signals. The downlink handles voice, telemetry (lots, including astronaut biometrics) and either ranging or video. The ranging code system is quite interesting and is relevant to an understanding of GPS. It relies on the Chinese Number Theorem, which is also widely used in cryptography. Also […]