MSRP-3 – Three Station Analog EAS Relay


The Broadcast Tools MSRP-3 is a three station analog stereo EAS relay/switcher following in the footsteps of the original Multi-Station Relay Panel (MSRP) designed by Broadcast Tools for the Sage ENDEC in 1996. The MSRP-3 provides additional alert audio distribution and transparent audio interrupt switching for the Sage ENDEC and other EAS encoders. Together with the single balanced stereo switched audio interrupt relay built into the ENDEC, an ENDEC and MSRP-3 will provide interrupt switching for four stereo audio paths. Each alert insertion can occur simultaneously on one or more station outputs, but alerts can not be overlapped.

Standard pinout RJ45 station audio input and output jacks make installation with Cat5 or Cat6 patch cables plug and play. The encoder audio input is a balanced monaural 3.81mm pluggable terminal block, with pass thru. Control via RS-232 serial port (or optional TCP/UDP Ethernet port), or contact closure inputs. Includes SPST test and station relay outputs.


Product Features

  • • EAS alert insertion for up to three stations. Insertion can occur simultaneously on one or more station outputs, but alerts can not be overlapped
  • • Front panel test switches (recessed), jumper defeatable.
  • • Multi-turn front panel level adjustment trimmers for encoder input, and outputs.
  • • Transparent signal switching via sealed mechanical relays utilizing 2-form-C bifurcated–crossbar silver alloy contacts with gold overlay.
  • • RJ45 station audio input and output jacks simplify wiring and service.
  • • Balanced monaural encoder audio input with pass thru.
  • • SPST status relay outputs with LED indicators.
  • • Remote control via RS-232 serial (or optional TCP/UDP Ethernet) commands or contact closure inputs.
  • • Dip-switch selectable unit ID.
  • • Removable euroblock-style screw terminal connectors for status relays and contact closure inputs.
  • • Fully RFI proofed.
  • • Surge protected PS-1515/IEC universal switching +/-15VDC desktop power supply with locking connector and IEC AC inlet included.
  • • Up to three units may be mounted on the optional RA-1 rack shelf. Desktop and wall mounting is also possible.