Wireless Systems

Tips for choosing and using wireless microphones in an evolving spectrum landscape.

Wireless Systems

RF Coordination at Rio 2016 with Steve Caldwell

RF engineer, Steve Caldwell walks us through the difficult challenge of coordinating RF at one of the world’s largest major events, the Olympic and Paralympic Games. Foreword There are few major global events bigger than the Olympic Games held every four years. More than 11,000 athletes took part this year across 306 events in 28 […]
Wireless Systems
Wireless Systems and Antenna Placement

Shure Whiteboard – Analogue vs Digital Wireless

In this month’s Shure Whiteboard Session, Shure Senior Applications Engineer, Tom Colman explains some of the basic differences between digital and analogue wireless systems. (Video at the bottom of this article).  For many years, analogue wireless systems ruled the airwaves, but in recent years we’ve seen increasing amounts of digital systems. On the surface, one might […]
Wireless Systems
Wireless Systems and Antenna Placement

Why the future of wireless is digital

Shure UK Pro Audio Group Manager, Tuomo Tolonen explains what’s driving the development of digital wireless systems and how they can benefit the modern RF engineer.  As the amount of spectrum available for use by wireless mic operators continues to shrink, most microphone manufacturers (including Shure) are drawn increasingly towards digital wireless technology as part […]
Wireless Systems

Five Golden Rules for Wireless Audio Antenna Placement

The following post on wireless audio antenna placement is a guest contribution from Alex Milne of RF Venue, Inc — a US based manufacturer of innovative products that make wireless audio systems work and sound better. For more information, please see his bio at the end of this post. 1. Create and Maintain Line-of-Sight: In radio […]
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How External Antennas Improve Signal-to-Noise Ratio

When it comes to wireless audio signal quality, nothing is more important than maintaining excellent signal-to-noise ratio (SNR). Nothing. Keeping signal-to-noise ratio as high as possible is the most effective (although not the only) means for reducing dropouts and interference on wireless devices of any kind. There are many ways of increasing SNR, but the […]
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Interview with Steve Caldwell: RF Engineer at Norwest Group

Ahead of the upcoming summer Olympic Games in Rio, we caught up with Norwest Technical Manager and RF engineer, Steve Caldwell. Based in Sydney Australia, Steve played a fundamental role in the successful coordination of an ambitious wireless setup at London 2012. As the spectrum landscape continues to change, Steve talks to us about how […]
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GLX-D Digital Wireless: How It Detects and Avoids Interference

Shure Whiteboard – Two Common Causes of RF Interference

When it comes to RF interference, there are two elements (or items if you like) that come up frequently as common culprits – metal and salt water. We’ve written plenty of detail about these major RF enemies before, and the following video should help to add context. In essence, large metal structures (fences, stage rigs, […]
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Wireless Systems and Antenna Placement

What Are Whitespace Devices? Shure Whiteboard Explains…

Not so long ago Ofcom approved plans for Whitespace Devices to share spectrum with digital TV and wireless microphones. As a relatively new development in the ongoing debate about the future of spectrum, Whitespace Devices are often overlooked or misunderstood. In this week’s whiteboard session, we cover what whitespace devices are, why and where they operate, […]
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Shure Whiteboard Session: Antenna Selection & Placement

Like microphones, antennas are transducers, converting energy from one form to another. In the case of transmitting antennas for in-ear monitors, they’re converting current into electromagnetic waves; for wireless microphone systems, they perform the reverse. The size of antenna required is related to the wavelength. For example: in a VHF system operating from say 170 to […]
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Wireless Systems and Antenna Placement

Shure Whiteboard Session: Visualising the RF Environment

This week’s Shure Whiteboard Session covers visualising the RF landscape. Why would we want to do that? I hear you ask…. The reason for RF visualisation is simple: When setting up our wireless rig, we need to maximise the amount of channels we can have on air and ensure reliable performance by understanding what spectrum […]
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Wireless Systems and Antenna Placement

Shure Whiteboard Session: Understanding Cables for RF

Welcome back and happy New Year! As we head into 2016, we’re back with another whiteboard session. This week’s topic will answer common questions about cable components for your RF setup. RF cables are an often overlooked aspect of wireless systems. You can have everything else set up perfectly: you’ve got the right kit; you’ve […]
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SM58 with wires

Shure Whiteboard Session: What is Intermodulation?

Welcome back, in this week’s whiteboard session, we’re going to tackle the often misunderstood concept of intermodulation. Intermodulation is a product of two signals interacting with each other while on air simultaneously. It commonly occurs when two signals are in very close proximity to one another, and therefore, any intermodulation need to be avoided with […]