What is dPMR?

  • dPMR is an ETSI standardised minimal cost digital radio solution.
  • dPMR standards (TS102 490 and TS102 658) were published in 2007 – after DMR. There are 2 tiers specified – Tier 2, modes 2 & 3 are relevant to professional users.
  • dPMR operates in 6.25kHz channels. Tier2, Mode2 is conventional; Tier2, Mode3 is trunked.
  • NXDN is based on dPMR but is incompatible with it. NexEdge is also derived from dPMR.

What is DMR ?

  • DMR is an ETSI standardized low cost, low complexity, professional digital radio solution designed to migrate analog FM radio users to... 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an expansive county in South Texas and home to more than 40,000 citizens, first met us, they faced the threat of an outdated analog radio communications system that was unreliable and endangering the lives of the County’s law enforcement and emergency responders.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

If you have never been involved in renovating your own house, you almost certainly know someone who has. It is a major logistical exercise in planning, perseverance, and above all, patience! Mostly, you will end up with what you want, but how often do you think “I wish I had shifted that wall/put in more storage/added another bathroom”?

There are so many things to decide, and only one chance to get it all right. And for most people, you will be carrying on your domestic “business as usual” amongst the chaos of upgrading your home.

Upgrading your radio system is a bit like that, but... Continue Reading

By Evan Forester, Marketing Campaigns Coordinator, Tait Communications.

Last week we introduced the new P25 Best Practice guides and website. Today we’ll dive a bit deeper to take a look at the first guide: First Steps to your P25 System.

I recently drove to a friend’s house and attempted a short cut. Unfortunately, I started by making the wrong turn. I ended up in a place I was unfamiliar with, but kept guessing the general direction of my destination. After a while, I literally found myself on the complete opposite side of town.

So much for finding a short cut.

If your first... Continue Reading

Click to visit the website and download the P25 guides

We are happy to announce the launch of our P25 Best Practice website complete with the first four P25 Best Practice guides:

  1. First steps to your P25 system
  2. Specifying your P25 system
  3. Procuring your P25 system
  4. Implementing your P25 system Continue Reading

Last week’s post on open digital radio standards reveals that the major difference between DMR and dPMR is the choice of multiple access scheme. DMR uses 2-slot TDMA to achieve two communication paths per 12.5kHz channel, whereas dPMR uses FDMA to divide the 12.5kHz channel in to two 6.25kHz sub-channels.

Therefore, the comparison of these two systems very much comes down to understanding the relative advantages and disadvantages of TDMA versus FDMA. Continue Reading

Credit: CFA Strategic Communications

Following the 2009 Black Saturday bushfire disaster in Victoria, Australia, the Country Fire Authority (CFA) sought to upgrade its state-wide critical communications system, prompted by recommendations from the Royal Commission.

With lives, communities and property at risk, choosing a new system was by no means an easy task. CFA chose a Tait P25 mission-critical communications solution to protect the safety of their people.

In the video below, Doug Booth, retired Project Director of the CFA Radio... Continue Reading

Here’s something you might not know (and your current vendor might not be telling you): There is very little practical gain between inexpensive, conventional P25 systems and high-end trunked ones for smaller public safety organisations.

A common belief is that P25 is an exclusive, high-end trunked system that commands equally high-end prices for both systems and subscriber equipment. This often forces smaller agencies to stick with their conventional analog systems or, even worse, upgrade to proprietary commercial-level digital technologies. All this... Continue Reading

The project planning process
By Susan Ronning, P.E.

Project planning is often ignored in favor of doing the work. However, many people fail to realize how valuable the project plan is in saving time and money, increasing efficiencies, and reducing potential future headaches.

The project plan
As part of the internal project kick-off, project plans and the project schedule are developed.

The Human Resource Plan identifies by name the individuals and organizations with a leading role in the project. For each one, roles and responsibilities are described.

The Communications Plan documents who needs to be informed about which parts of the project, and how they will receive information. Continue Reading

Designing your new radio system
By Susan Ronning, P.E.

In a nutshell, the definition of a successfully designed radio system is one that that allows a user to talk to who they need to, where they need to, and when they need to.

The design phase includes three major project stages:

1. Needs analysis
2. Technical assessment
3. Preliminary design

1. Needs analysis
The needs analysis evaluates how and where the system is used today, what features and functions are working or not, and what is desired. It includes the following components: Continue Reading