Train radio centres VRU 11, SRU 11, RRU 11

Identification

Train radio centres are designated for all passenger railway transport vehicles. They are the basis of the Train Radio Appliance REGONIK VRZ 11, which meets the demands of the UIC 568 international norm for acoustic irradiation and telephone appliances for RIC vehicles.

The vehicle radio centre REGONIK VRU 11 is designated for passenger vehicles of all types (open carriage, compartments, sleeping car, restaurant car etc.)

The vehicle radio centre REGONIK VRU 11 is designated for passenger vehicles of all types (open carriage, compartments, sleeping car, restaurant car etc.)

The locomotive train radio centre REGONIK RRU 11 is designated for the driver(the locomotive).

In the case of the joining of the whole train a cable in accordance with the UIC 568 and UIC 558, the VRU centres permit choosing and making a telephone connection between the conductors from any vehicle with the crew boss or the driver as well as between the crew boss and the driver. The REGONIK centres allow the transmitting of information to the passengers from any vehicle or engine. Before the information is transmitted, a three – tone gong sounds. During the transmitting for the same vehicle or the whole train, the centers produce the PRIOR signal, which uncouples the programme channel in the same vehicle or in the whole train and sets the volume at the maximum level regardless of the pre – set positions of the RHR 01 volume regulator (i.e. forced listening). The centre from which the information is being transmitted is allowed to transmit a MUTE signal into the acoustic close RZW 13 and RZW 15 controlled power amplifiers in the same vehicle, which silences them and prevents them from undesirable acoustic feedback. If the customer wishes, all types of radio centres can be equipped with an 8 – pole UIC connector to permit the attachment of a portable speech or music transmitting unit. Moreover, as opposed to the UIC 568 norm, it is possible to connect a car radio with a recorder as well as an alternate supply of a low – frequency signal(e.g., an automatic station speaker) to the REGONIK centre directly without a UIC – connector to broadcast music or a recorded text etc.

On the front panel, there are following control and signal items according to the UIC 568 recommendation at all REGONIK centres:

  • “S” – Switch vehicle – train for directing the announcement
  • “C” – Push button dial for communication with the central post (with the crew boss)
  • “L” – Push button dial for communication with the locomotive (with the driver)
  • “A” – Push button for announcement
  • “AOC” – Signal lamp “loudspeaker occupied”
  • LED “TOC” – Signal lamp ” train telephone occupied”
  • LED “HC” – Speaking key on micro-telephone
  • “GU” – craddle switch for the silent position
  • In addition there are:
  • LED “C”- signalling of dialing
  • “C” LED “L”- signslling of dialing “L”
  • LED “A”- signslling of dialing “A”
  • switch PGM vehicle- train for directing the programm
  • LED “POC”- signal lamp “programm loundspeaker occupied”
  • LED “PON”- signal lamp “standby on”
  • LED “ERR”- signal lamp “error in the supply”

Technical parametres common to all centres:

  • operating supply voltage of 16,8 to 32V
  • max. waving of supply voltage at 24V DC max. 8V pp
  • input of the radio centre without charge max. 6W
  • input for car radio symmetrical, voltaic separated
    • input impedance of each input min. 10kOhm
    • nominal input voltage 300mV
  • input for music transmitting unit symmetrical
    • input impedance min. 10kOhm/vehicle
    • nominal input voltage 2,0V
  • input for electret microphone with input resistance of 600 Ohm asymmetrical
    • input impedance min. 2 kOhm
    • nominal input voltage 5mV
    • separation signal/interference of the preamplifier min.60dB by the short input
  • input lines equipped with a limiter
    • nominal output voltage measured on the line outputs 2,0V
    • change in the output voltage max. +2dB by a change in the input voltage +35 dB
    • rise time 0,0ls
    • fall time 1,0s
    • harmonic distortion max. 0,5%
  • frequency characteristics of the preamplifier 300Hz-8kHz ±3dB
  • output lines:
    • vehicle(AUDIO)asymmetrical
    • train(UIC)symmetrical, symmetry min. 45dB
  • nominal output voltage 2,0V
  • output resistance of the line amplifier in the centre max.20 Ohm
  • harmonic distortion of the microphone and programme lines measured on the line outputs in range 300Hz to 8kHz by output voltage 2V, without limiter effect max. 0,3%
  • protection of the preamplifier´s output against a short circuit
  • protection of the supply voltage against turnover up to 80V
  • protection of centres against excess voltage over 36V
  • panel construction of the centres
  • connecting points of WAGO grip for Cu-conductor cables 0,75÷2,5mm2
  • easy additional assembly of the 8-pole connector for a music transmitting unit
  • possibility of attachment of a car radio with recorder or special speaker
  • operating temperature -30°C až +6O°C
  • size: h =330, w =140, d =120
  • weight 3kg

The SRU 11 Central Post Radio Centre and the RRU 11 Locomotive Radio Centre also contain an acoustic signal for telephone appeal.

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