If you are part of a larger agency a trunked network could be incredibly beneficial to how your radio communications operate. But what is trunking and how does it work?
Many know of the conventional system where there are dedicated channels allocated to specific users or a group of users. However, trunking has become increasingly important as it offers huge advantages over conventional for larger agencies.
P25, DMR, Tetra, MPT– there are many types of radio technologies that support radio operation. Many of these technologies are suited more to a particular industry and work in their own specific bands.
The Communication Systems: Different types of Radio lesson covers each technology, including Conventional FM and NXDN, explaining each one including the industries they are commonly used in, their specific bands and their channel spacing, among other pieces of useful information.
To learn more about radio technologies watch the video below and read the accompanying... Continue Reading
Whether you are a system manager contemplating upgrading to digital radio or you just want to learn the advantages of digital radio over analog, this course will directly identify the benefits of digital radio.
From flexible data capabilities to better spectral efficiency, digital radio has some powerful advantages of modern digital standards that have emerged over the last few decades. There are other ways in which digital radio offers advantages over analog as stated in the Communication Systems: Digital vs. Analog lesson.
Manually checking through radio channels for communication activity can cause problems in the way of missed calls as a result of being on the wrong channel. Fortunately, there is a better way of checking for activity.
The lesson Communication Systems: How scanning works on the Tait Radio Academy explains how scanning, an automatic process, checks each channel in turn to see if there is any activity occurring. If there is, the radio will lock onto that channel and then send the audio to the speaker so that the radio user can hear it.
As previously discussed, the use of a repeater can solve the problem of an obstruction in line of sight conventional communications. This benefit is part of installing a repeater system, but there are also other benefits that can occur when there is no obstruction.
The lesson Communications Systems: How does a repeater system work? continues on from the Modulation and Radio Building Blocks lesson to explain how repeater systems work and how repeaters are not only excellent for ensuring communication can occur, but also for extending communication range.
What is the most efficient use of the small chunk of radio spectrum an RF channel occupies? There are two answers to this question, one is the frequency division multiple access (FDMA) technique and the second is the time division multiple access (TDMA) technique.
If you are unfamiliar with FDMA and TDMA, or are yet to pin down the differences between the two, the course Modulation and Radio Building Blocks: The Difference between FDMA and TDMA, is the course for you.
Learn the definition of both FDMA and TDMA, and the differences between the two by... Continue Reading
With the FCC announcing narrowbanding 700MHz networks will no longer be mandated by 2017, now is a great time to refresh your knowledge of channel spacing.
The lesson Introduction to Channel Spacing explains the basics of channel spacing and gives an easy-to-understand explanation of wideband, narrowband and ultra narrow band. This free course also gives you insight into the engineering tradeoffs involved with the different bands.
This lesson will answer questions such as what are the different types of modulation, why carrier waves need modulation at all and why input signals are not used directly. By the end of the lesson, you will be able to answer all these questions with confidence.
Additionally, if you are interested in learning more about the building... Continue Reading