If the earth was completely flat, we all breathed hydrogen, and the atmosphere was so cold that the air carried no moisture, then in theory two people a thousand miles – or more – apart could easily talk to one another using a two-way radio.
But in the real world, the range – or coverage – of a two-way radio system is dependent on a wide range of conditions, including:
Weather, temperature and atmospheric conditions – natural atmospheric processes can cause reflection and refraction
Line-of-sight obstructions – like tall buildings that may shadow or block the reliable reception of radio waves
Frequency format – Ultra High Frequency (UHF) or Very High Frequency (VHF) radio
Handset antenna height and characteristics.
Clearly, when it comes to selecting a handset that gives users the coverage they need, the particular usage environment in which the device will be used is important.
It’s the reason why Hytera has produced an extensive range of VHF and UHF portable radios suitable for different users in all manner of working environments.
From radios that meet the needs of basic entry level users in the open 446 MHz radio range – which is available for licence-free use – through to comprehensive DMR Trunking, Tetra and LTE systems.
But with so much choice, it can be difficult to know where to start if you’re tasked with finding the best handset for a specific use case.
Narrowing down the decision
You can’t go wrong by ensuring that the handset you select is a well designed product that’s packed with features and the PD3, PD4 and PD5 series all provide excellent coverage for most entry level users.
That's because Hytera radios are designed to maximise coverage and range. For example, the central position and design of the antenna is a proven approach to providing a more effective radiation pattern. In some models, integration of a highly efficient GPS antenna is practical too – with the positioning also providing easier access to the physical channel and volume controls.
Another key decision will be what frequency format you opt for. If operatives will be working in building complexes then a UHF handset will be the best option. That’s because radio waves, just like light waves are electromagnetic. So high frequency waves, while travelling shorter distances, are better at saturating dense building settings. By contrast, VHF is best for longer distances and open areas.
And of course, Hytera DMR radios support AMBE+2 digital technologies which significantly enhance range and coverage compared to conventional analogue handsets. By eliminating interference, our DMR radios provide clear noise-free communications.
At Hytera we undertake multi-layered testing and retesting of the environmental and physical attributes that deliver more sensitive and effective communications. So, while the RF power and specifications of all portable radios are regulated by various authorities, our handsets are designed to use the RF spectrum better.
If you’d like some expert help navigating the best handset for your coverage needs, then our specialist Hytera Partners are on hand to talk through every aspect of your requirement and can arrange a coverage test.
Source From Hytera UK