The ability to improve emergency-services organizations’ ICT systems with little flexibility to experiment with new technologies poses a conundrum for operational experts Australia-wide.
“The ongoing requirement for reliable systems and increasing situational awareness makes progress in emergency-services organisations (ESOs) a careful affair combining forward-looking vision with on-the-ground reality… the expansion of high-bandwidth 4G mobile networks offering new options for real-time communications, ESOs are finding they have access to a rapidly expanding range of solutions.” – GTR Magazine
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Coverage considerations will dictate the number and locations of your radio sites (also referred to as towers). Together with frequency availability and traffic patterns, they will determine whether the system should be simulcast, multicast or a hybrid of the two.

Coverage engineering may be the most complex area of the radio system specification and design process and is one critical area where your investment in a competent consultant will be well justified.

Measuring coverage
There are many ways to describe coverage performance. It is typically done in... Continue Reading

When Jim Wells County, an expansive county in South Texas and home to more than 40,000 citizens, first met us, they faced the threat of an outdated analog radio communications system that was unreliable and endangering the lives of the County’s law enforcement and emergency responders.

We committed to understanding the issues the County faced – a unique geography, limited funds, dated equipment and a tight schedule and delivered a three-site hybrid P25 digital and analog simulcast system. The Tait solution is now helping the County’s 400 law enforcement and emergency response agencies operate more effectively and safely. Continue Reading

Principal Engineer Ian Graham explores a common question in radio system design: whether to deploy duplexers or to use separate transmit and receive antennas.

On the face of it, using a duplexer to reduce the number of antennas required by the system sounds like a great idea. But, as usual with RF, it is never quite that simple… Let’s examine the technicalities of both approaches. Continue Reading

We’ve talked about the dangers of getting locked into the wrong P25 solution before. And yet, we still hear about people getting tangled in the proprietary web some vendors weave.

Genuine open standards are non-proprietary, so you are never under the control of one vendor. Choosing open standards will increase your choice of certified vendors and bring down prices, improve technical quality, and avoid the risk of being locked into a sole supplier. Continue Reading

The main difference between P25 Phase 1 and Phase 2 is system capacity, so the primary reason for opting for Phase 2 is additional capacity.

Phase 2 TDMA (Time Division Multiple Access) doubles the number of talk paths compared with Phase 1. P25 Phase 2 TDMA creates two logical channels in one 12.5kHz physical channel. Because the Phase 2 control channel is unchanged from Phase 1 there is compatibility between the phases. Continue Reading

Meet Rodney Mackrell. Rodney works as the Senior Design Engineer in Tait’s Usability Design team. We thought that maybe, like us, the rest of the world would like to get to know Rodney and the work he and his team do for Tait Communications, and see just how important Usability Design is to our clients and our company.

With Rodney we learnt about the process Tait takes to develop new client solutions, how ideas are formed and what working closely with clients looks like and what it can achieve. We looked around the workspace and discovered how this department works, how... Continue Reading

Purchasing and using Intrinsic Safety equipment? Here’s what you need to consider.

If you are a user or purchaser of small, portable equipment in hazardous environments, then Intrinsic Safety (IS) is likely to be a key requirement. Dave Spalding, Senior Systems Engineer (Intrinsic Safety), talks about what IS is, and how to get the best when purchasing and using it. Continue Reading

Panola County, Mississippi has recently implemented approximately 420 Tait P25 trunked TP9400 portables and TM9400 mobiles on the state-wide Mississippi Wireless Integrated Network (MSWIN) for county-wide and interoperable communications.

The radios have already been put to the test! Watch this video and see how a TP9435 performed after being accidentally dropped into the path of a local controlled burn! EL Campbell, Tait Project Coordinator for Public Safety, was on-site with Daniel Cole, Emergency Management Director for Panola County, and Ottis Anderson from Anderson Communications, after the incident and captured the results! Continue Reading

Decisions used to be easy in the world of analog conventional systems – just add channels/base stations when and where needed, at the existing or new radio sites, maybe re-program some radios, and you were done.

With the advent of digital networks and wide area trunking technology, the answer is no longer so clear. Ever-increasing technical complexity and continuous competition make the situation even more challenging. Even securing ball-park estimates for your options may be very difficult to obtain.

Replace or upgrade?
At first sight an upgrade (incremental... Continue Reading