Raspberry Pi Power Supply

An issue confronting Raspberry Pi users is SD card corruption due do improper system shutdown. Ordinarily before removing power from the Raspberry Pi, one should execute the “sudo shutdown -h” Simple routine can be incorporated into the system, sensing either an operator shutdown or a power failure. Read the full PDF article here> Thanks to Rob VK2YMU for submitting this […]

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Product Review – Rode M3 Studio Microphone

Product Review – Rode M3 Studio MicrophoneAustralian Made I don’t usually promote any product unless it offers great value for money with equally great performance. Usually the microphones provided by radio manufacturers, besides the high price tags don’t seem to give the expected audio quality that can be had with non OEM units. To read the full PDF article please […]

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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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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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Digital Voice Radio

Digital Voice Radio just became a lot easier “In the not so distant past”Sounds like the preamble of a book or movie. If you, are about to make the move into digital radio, you will be presented with choices, these will have an impact on your pocket and whom you will be able to talk to. Looking for what gives […]

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Wireless-X The Bible

Wireless-X The Bible By Dewey L. Hee WB7OEV In his Prior life was a System Administration working for the Boeing Company. He became interested in Amateur radio while working for the Boeing company in 1972… He began to wonder what else he could do with the FTM 400 and discovered this mode called Fusion, (CFM) and got bitten with the […]

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Digital Radio Hot Spot

Digital Radio Hot Spot If you’re like me, deciding to embark upon the world of digital radio, confusion is likely to be the result, likely to make you abandon the whole idea, going back to what you know and understand. However the digital mode experiencing rapid growth is DMR, but like all the others, requires a radio that uses that […]

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How much fuel is in your battery?

How much fuel is in your battery? The best way to determine the state of charge of a battery A battery is a store of energy. It can be considered as a container of water that is either full or empty. With a water container it’s easy to determine how much water you have left in the container. Similarly on […]

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How to calculate decibels

Are You Confused On How to Calculate Decibels? What is a logarithm ? The simplest definition of a logarithm is that of numerical result of a number raised to some power For example 10 x 10 = 100 can also be written as 10¬2 or Log10 (100) Note that in the statement “Log10” the base is stated with the number […]

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