Causes and Solutions to Hearing Interference on Two-way Radio Communication
28 Oct. 2016 Information
Hearing interference is a common complaint when people are using two-way radios. To solve the two-way radio solution, you need to understand the issues that are causing the interference in the first place.
The first is background noise. The audio on your radio is fine in theory but it is being drowned out by activities in the background. This is particularly pertinent in a work environment where heavy machinery and vehicles are in use. The radio user ends up having to shout to try to make themselves heard. Fortunately, modern digital two-way radios have background noise cancelling capabilities built in, so that conversations can be clearly heard.
Losing coverage is the second issue, whereby conversations are lost, cut short, or sound like a strained whisper. Sometimes this can be down to batteries in that they are not charged up properly or have not been replaced at the recommended time. In our experience, it is more likely that your site does not have enough coverage and requires a repeater to boost the signal. We have designed many replacement solutions where this has been the case, especially in challenging topographical areas.
Overhearing other conversations is number three on the irritants’ list. It also means that other people can probably hear you too. This occurs when you have unlicensed radios as they share their frequencies with others. If you want to avoid this, you need a licence from Ofcom so you can enjoy your own private network.
Number four – lack of discretion. With the most basic walkie-talkies, it is clear that everyone around you can hear your conversation. The simplest solution is to purchase one of a range of ear-pieces. You can also use text messaging on most models of digital two-way radios
for true one-to-one communication when privacy is really needed.
The last issue is the location you use your radio in within your workplace. Similar to the coverage issue, interference can occur when you use two-way radios in the basement or in a lift. These are known as black spots and these can be potentially dangerous in an emergency. We were faced with this very issue when installing a solution for an aquarium. We used a bespoke antenna system to boost the signal throughout the multi-floored building which is largely underground. Similar solutions would be required for businesses with multiple floors and lifts.