Ryabina

Ryabina - command and broadcast device

Ryabina is a universal equipment that provides loudspeaker communication and transmission of command and broadcast transmissions on various ships and industrial enterprises with a high degree of dust and humidity. It does not require special maintenance and is managed directly by users. The equipment transmits service messages and audible alarms. It also maintains two-way communication between different rooms on the ship and the central post.

Ryabina devices operate from an AC power supply with a voltage of 127/220 V with a frequency of 50 Hz or from a DC power supply with a voltage of 24 V. The equipment housings are made of impact-resistant materials resistant to the negative effects of the environment. The equipment consists of 90 different devices that allow you to create a variety of communication schemes.

The choice of communication and broadcast schemes is influenced by the purpose of the facility and the tactical and technical requirements for loudspeaker communication and broadcasting at this facility. Different communication circuits can connect and interact with each other.

The Ryabina equipment is designed to operate at ambient temperatures from -10 to +50 C for indoor devices and from -40 to +60 C for outdoor devices. Relative humidity can reach 98% at a temperature of +40 C, and atmospheric pressure is 750 + 30 mmHg (101333 + 3400 Pa).

KVU Ryabina is certified by the Russian Maritime Register of Shipping. The equipment is made of impact-resistant materials, resistant to vibrations and high humidity levels. The system has a duplicated output stage of the power amplifier and automatic adjustment of the output circuit, which ensures a clean signal. For operation with constant use, switching of the output power supply from alternating and direct current is provided. The Rowan is equipped with a 50W amplifier, which is ready to work immediately after switching on.

The complete set of the system includes a power supply unit, a loudspeaker, a volume control, a switchboard, switching and amplification units, a transformer unit, a switchboard, a light alarm device, rectifiers, an additional power amplifier, a parallelization box, a microphone, a micro-telephone headset, a line occupancy monitoring device, a subscriber's signal shield, a switch box, a broadcasting device, an amplifier broadcast, matching device, socket, linear shield for wiring broadcast lines, communication device, amplifier unit, shore communication device, megaphone control unit.

Technical specifications:

• Input voltage - 780±100 mV
• The output voltage is 30 V
• Load resistance – 18 ohms
• The coefficient of nonlinear distortion in the frequency band is 80 - 10000 Hz
• Power factor - not less than 0.7

• Operating temperature - -10 + 50 C