Mobile phones have entered our daily lives, whether professionally or personally. Doing without it is impossible. Despite this, the talkie-walkie is still used. We have therefore studied this phenomenon and tried to understand why walkie talkies remain an essential working tool for many trades and are used by a large number of individuals in their leisure time.
How were walkie-talkies born?
- Let’s go back a little bit to the history of portable transceivers.
- It all started in the 19th century when Heinrich Hertz discovered that it was possible to transmit and receive waves through the air. Thus radio frequencies were born which are now called Hertz in honour of the German physicist.
- Later, it’s Swedish engineer Ernst Alexanderson’s turn to advance the technology by developing a high-frequency generator that gives users the ability to transmit the sound of their voice through the airwaves.
- From 1912, sailors and navigators seized this technology to equip their boats and thus communicate at all times with the mainland. The very first real portable transceiver is an invention of the Australian William Downie who provided the police vehicles with his patrol units.
- Democratised for nearly 50 years, walkie-talkies have become an integral part of our landscape. Easier to use and less expensive, they are not, as it should sometimes be said, an economical alternative to mobile because, given their specificities, they fulfil very different and unrealizable missions with GSM.
How does a walkie-talkie work?
The primary operating mode of a walkie-talkie is straightforward: you set two or more walkie-talkies on the same channel and, at the touch of a button, you communicate with all the devices within reach placed on this channel. You release this key and can then receive the answer from all other devices.
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Communications are simultaneous: at the touch of a button, you can communicate at the same time with several people.
Calls are instant (no number to dial and in many situations this responsiveness is paramount: safety, building sites, office building, mountain, etc.) Now with the walkie-talkie for a cruise, you can get no connectivity problem whatsoever.
The talkies are not dependent on antennas of mobile operators and allow you to capture everywhere without the cellular network as long as you stay in the transmission area of other devices (from 2 to + several tens of km)
Walkie-talkies allow “five-tone” or more recent technologies to active electrical devices remotely (door opening, siren tripping, etc.).
The many accessories available make their use suitable for any activity (hands-free heads, remote microphones, crane pedals, laryngophone.)
Finally, some models meet the highest standards of safety, resistance, sealing, autonomy and therefore allow a very intensive use.