How wireless systems for simultaneous translation work. Advantages, range, audio quality and models available in SP. Updated 2026.
Digital RF systems with 150m range, 32 channels and zero interference. The standard lingo uses at every event.
Until 2015, most interpretation systems used infrared (IR) — with distribution cables and line-of-sight restrictions. Today, digital RF is the standard: longer range, more channels, encryption and total mobility for participants.
Digital RF covers halls up to 150m without repeaters. For larger spaces, we use directional antennas with no signal degradation.
Support for up to 32 languages at the same event with a single transmitter — ideal for large multilingual congresses.
Receivers with 10–12h of battery life. No need to swap during full-day events.
Standard AES-128 encrypted transmission for confidential events (M&A, legal, sensitive data).
Automatic frequency hopping avoids interference from other Wi-Fi or Bluetooth systems in the environment.
All transmitters operate on frequencies certified by Anatel — no risk of irregularity in Brazilian territory.
A wireless simultaneous interpretation system has three parts. In the booth, the interpreter hears the speaker through headphones and speaks into a microphone. The microphone signal goes to a transmitter, which sends it by radio frequency. In the audience, each participant uses a receiver with headphones and chooses the channel of the language they want to hear. There is no cable between the booth and the audience, and this changes the event's logistics.
Without distribution cables, the audience can move, sit anywhere in the room and even step out into the corridor without losing audio. Setup is faster, the risk of tripping decreases, and the space layout does not have to be designed around wiring. For the organizer, this means less setup time and fewer points of failure. For the participant, it means freedom of movement and stable audio.
The wireless system works with both an ISO booth and portable equipment. The difference between the two options lies in the interpreters' acoustic isolation, not in the transmission medium. To decide between them, see ISO booth vs portable equipment.
The standard lingo uses at every event is digital RF. It covers halls up to 150 meters without repeaters, and in larger spaces directional antennas maintain the signal without degradation. In practice, this means the same setup serves a meeting room, an auditorium and a trade show hall, without changing technology.
The capacity of 32 simultaneous channels allows up to 32 languages at the same event with a single transmitter. Most events use far fewer, but the margin is useful at large multilingual congresses, where additional languages can be included without reconfiguring the system. Each channel corresponds to an output language, served by its own pair of interpreters.
The receivers' battery lasts 10 to 12 hours, which covers a full event day without swapping. Even so, checking batteries is part of the routine before each opening. At multi-day congresses, receivers are collected at the end of each session and prepared for the next, as described in the congress interpretation checklist.
At confidential events, the risk is not only in the people present in the room. An unprotected radio signal can, in theory, be picked up outside the venue. For this reason, lingo's transmission uses AES-128 encryption, a standard suited to M&A meetings, legal events and other situations with sensitive data.
Encryption protects the signal. The NDA protects the content. lingo signs an NDA valid for 5 years before receiving any material, and Alex Barros does not accept competing mandates in the same deal. The two levels, technical and contractual, complement each other: the first reduces the risk of interception, the second defines the obligations of those working at the event.
Event halls concentrate many devices: Wi-Fi networks, cell phones, Bluetooth systems, stage microphones and video transmissions. In such an environment, frequency choice matters. lingo's digital RF uses automatic frequency hopping, which avoids interference from other systems in the environment and keeps audio stable throughout the session.
Final quality also depends on the booth. A good transmission system does not compensate for a badly placed booth, with outside noise or no view of the speaker. Integration with the venue's sound system is tested before each event, and the complete audio test takes place 30 minutes before opening. If there is a problem, there is time to fix it before the audience arrives.
Radio frequency transmitters must operate on authorized frequencies. All lingo transmitters operate on frequencies certified by Anatel, which eliminates the risk of irregularity in Brazilian territory. This matters to the organizer for two reasons: it avoids interference with other services at the venue and protects the event from regulatory questions.
For events of foreign companies in Brazil, certification is a frequently checked item. Equipment brought from abroad may use frequency bands that are not authorized here, and choosing local equipment avoids this problem.
The comparison table above shows that digital RF outperforms the other technologies in range, channels and mobility. Infrared, however, has a characteristic RF does not: the signal does not pass through walls. In rooms where physical privacy is the top priority, this can be an advantage, because the signal stays contained within the room. On the other hand, it requires line of sight between emitter and receiver, which limits participants' mobility.
Analog RF is considered legacy. It has fewer channels, shorter range and a higher risk of interference. lingo keeps digital RF as the standard and offers infrared on request, for those with a specific requirement. The general guidance for most events, from meetings to congresses, is digital RF.
If you are comparing providers, ask which technology each uses, how many channels the transmitter supports and whether encryption is included. The guide how to choose simultaneous interpretation equipment gathers the main questions.
A wireless system is only reliable if there is a plan for when something fails. The lingo kit includes spare receivers and a redundant transmitter, so an equipment failure does not interrupt the session. A backup technician remains on site throughout the event and acts before the audience notices the problem.
The team arrives 2 to 3 hours before the event for setup and testing. This window is used to install, adjust channels, run the sound check with the interpreters and fix unexpected issues. When the setup window is short, risk increases, and it is worth telling lingo early about any venue access restrictions.
Digital RF works indoors and outdoors. At outdoor events, range can be extended with directional antennas, covering larger areas without signal loss. The points of attention are different: ambient noise, wind and distance between the stage and the booth. The booth needs protection from outside sound so that the interpreter hears the speaker clearly.
For halls and large events, equipment planning is covered in equipment rental for large events in SP. We deliver and install throughout Greater São Paulo.
Participants with hearing impairments can also use the service. The standard receivers are compatible with magnetic induction loops, and there is a specific configuration for these participants. Those who need this configuration should notify the organization in advance, so that the right receivers are set aside and handed out at reception.
Libras interpretation is a separate service, with its own interpreter, and must be planned separately.
To hire, provide languages, duration, number of participants and venue in the automatic quote. The PDF arrives by email and WhatsApp in 60 seconds, and the quote amount is the final amount on the invoice. The minimum lead time is 48 hours, although hiring in advance is recommended, especially for large events and rare languages.
To understand the price factors, see how much simultaneous interpretation costs in SP. To see what is included in the rental, see simultaneous interpretation equipment rental in SP and the equipment FAQ.
lingo's receivers have a rechargeable battery with 10 to 12 hours of autonomy. For multi-day events, lingo provides bulk chargers, which allow all receivers to be recharged at once overnight. This way each morning starts with a full battery, without relying on outlets scattered around the venue.
Distribution is as important as the technology. Receivers handed out at the entrance, with simple instructions on how to turn them on and choose the channel, avoid queues and questions during the first talk. At large congresses, lingo provides a support team to hand out and collect receivers at the entrances and exits of each session. The full protocol is in the congress interpretation checklist.
A practical tip for the organizer: state in the invitation or on the badge that interpretation will be available and where receivers can be picked up. Participants who know this before arriving use the service from the opening and ask the reception team fewer questions.
A provider that answers these questions clearly usually has a mature process. Vague answers, such as professional equipment without specifying the technology, deserve attention. See also the simultaneous interpretation equipment FAQ.
Yes. Digital RF works in both indoor and outdoor environments. For outdoor events, range can be extended with directional antennas.
lingo's standard receivers are compatible with magnetic induction loops. For participants with hearing impairments, we offer a specific configuration.
We deliver and install throughout Greater São Paulo.