RCS Audio-Systems UBT-016 UHF pocket transmitter for Sound-Guide system, 863–865 MHz, with leather case content_copy

The UBT-016 from RCS Audio-Systems is a UHF bodypack transmitter for guided tour systems, designed in a discreet form factor and intended for use in mobile sound reinforcement systems. It serves as the transmitter component in sound guide systems, where a person (e.g. a guide) speaks into a microphone and the audio signal is transmitted to receiver devices. The devices are suitable for use in museums, exhibitions, conferences, or events where clear and interference-free communication over a defined range is required.

Applications

The transmitter is intended for use in professional sound reinforcement systems, particularly in environments requiring mobile, wireless communication between a speaker and multiple receivers. The range of 50 to 80 meters allows for flexible use in indoor spaces or limited outdoor areas. The frequency bands of 863 to 865 MHz with 16 available frequencies offer sufficient flexibility to avoid interference with other radio devices. The system is typically used in combination with receivers from the same system family to ensure synchronized transmission.

Functions and Equipment in Detail

The UBT-016 features a microphone input with a 3.5 mm jack, suitable for connecting lavalier or headset microphones. Audio transmission occurs in the frequency range of 50 Hz to 15 kHz ±3 dB, providing a sufficiently wide bandwidth for speech transmission. The signal-to-noise ratio is 80 dB, enabling clear and interference-free transmission. The maximum modulation (deviation) is ±40 kHz, sufficient for stable transmission at varying volume levels. The transmission technology is based on PLL-synthesized frequency, ensuring precise frequency control and minimal interference.

Technology Explained Simply

The wireless transmission operates in the UHF band (863–865 MHz), a frequency range commonly used for wireless communication systems in professional audio and sound reinforcement. PLL synthesis ensures that the frequency is precisely set and maintained, preventing interference and frequency drift. Audio transmission occurs in LINE format, meaning the signal can be connected directly to a receiver or amplifier unit without additional amplification. Power supply is provided by two AAA (Micro) batteries at 1.5 V per cell, or by rechargeable NiMH batteries in the same format. These batteries are specifically developed for the UBR-016 and UBT-016 devices and offer an environmentally friendly and cost-efficient alternative to disposable batteries.

Compatibility and Accessories

The transmitter is part of a guided tour system and is used in combination with receivers from the same system. Compatible accessories include the headset microphone for transmitter UBT-016 and the lavalier microphone for transmitter UBT-016, which connect directly to the 3.5 mm jack input. Using these microphones allows for flexible and unobtrusive operation, depending on the requirements of the application. The devices are CE-certified (CE 0681), confirming compliance with European safety and radio regulations.

Mounting and Installation

The transmitter is worn as a bodypack, with dimensions of 60 x 85 x 19 mm (W x H x D) providing a compact and discreet form. Mounting is typically done on the speaker’s clothing, and the device is supplied with a leather pouch that protects the transmitter and enables secure attachment. Power supply is provided by two AAA batteries or rechargeable NiMH batteries, which are inserted directly into the transmitter.

Operational Advantages

The UBT-016 provides reliable and interference-free speech transmission with a clear signal-to-noise ratio of 80 dB. Frequency selection across 16 channels in the UHF band allows flexible use in environments with high radio traffic. The use of NiMH batteries offers an environmentally friendly and economical alternative to disposable batteries, especially for frequent use. The compact design and use of standard microphone connectors (3.5 mm jack) simplify integration into existing systems. The devices are designed for professional use and deliver stable performance in mobile sound reinforcement systems.

Technical data
System compatibility	Person guidance system
Frequency range	863 – 865 MHz (16 frequencies)
Signal-to-noise ratio	80 dB
Audio frequency range	50 Hz - 15 kHz ±3dB
Microphone input	3.5 mm stereo jack
Power supply	2x Micro (1.5V; AAA) or batteries
Transmission range	50 - 80 m
Audio output	LINE
Max. stroke	± 40 kHz
Transmission type	PLL synth.
Dimensions (W x H x D)	60 x 85 x 19 mm

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