Building a shack in my motor-home

Once upon a time… It has taken me at least a year of deliberating on this subject as I had a number of considerations to take on board that took a while to decide but eventually I got there. Read on.. What were my shack objectives in the motor-home?Not destroy the motor-home with holes everywhere! At the same time everything […]

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Mt. Granya activation

On Saturday 4 May 2024 a few ARARC members activated Mt. Granya. Most people got there around 10am, except Mike who took the scenic drive via Mt.Beauty. VK3GAZ, VK2TCM and VK3ERW set up portable HF stations with various antennas, radios and battery configurations, all operating QRP. VK2JMJ brought some 2mt beams to work distant repeaters. VK2AEC, VK2GS and Marko (latest […]

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80m Loop Antenna

Michael Harvey VK2JMJ December 2021 Theory: Antennas are basically a resonant element in the sky. That resonance can be obtained by a natural RF length or wavelength of wire. That length can be physically shortened or made to look longer at RF by adding inductance in that length. A combination of inductance and capacitance makes the element resonate. Read the […]

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The Complete Portsdown System

The Portsdown Digital Amateur Television Project. This document covers the general layout, construction, assembly and setting up of Portsdown Digital Amateur TV system. Before starting in DATV it is highly recommended you read this document in its entirety to understand how the system operates and which hardware you will need. Download the PDF document>

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When the internet goes down…

Interesting Engineering: When the Internet and Cell Phone Networks Go Down, Amateur Radio Operators Step Up. Click this link to read this interesting article published in the USA: Interesting Engineering: When the Internet and Cell Phone Networks Go Down, Amateur Radio Operators Step Up

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VK2RWB (Yarrawonga)

The repeater had works done to improve the range, many thanks to all those who did the heavy lifting. The repeater can is now workable way past Corowa going east towards Albury, no exact coverage map exists presently. So any reports will be useful. The repeater is linked with connectivity to many parts of West Victoria, including Mitcham in Melbourne […]

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Two excellent reads

NVIS This interesting article taken from hamradioschool.com shows the relationship of height verses propagation angle. To read the full article, click here: Australian Amateur Call Signs Australian Amateur Radio Call Signs A history overview The current series of Australian Amateur Radio Call Signs may seem baffling but looking back at the way in which our call signs have evolved shows […]

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MMDVM Hot Spot Modification

MMDVM Hot Spot Modification Net-Switcher) Updated version. Roger Clark (VK3KKY) earlier in November 2018 posted on his blog an interesting modification to the Jumbo/Zum spots, be it simplex or repeater boards, as long as the processor board used is a Raspberry Pi… Article submitted by Rob VK2YMU

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Understanding modern digital modulation techniques

Understanding modern digital modulation techniques Fundamental to all wireless communications is modulation, the process of impressing the data to be transmitted on the radio carrier. Most wireless transmissions today are digital, and with the limited spectrum available, the type of modulation is more critical than it has ever been. Read the full PDF article here: Source: Electronic Design. Lou Frenzel […]

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