David Clark Company

Specialty Modules

Model U3810

U3810 Radio Interface Module

Provides radio transmit capability for entire intercom system
  • Adds the radio transmit and receive functions of a mobile radio to the intercom system
  • Recommended for small systems only (2-3 positions maximum)
  • Simple installation
  • Dimensions: 5-1/4" L x 5-1/4" W x 2-3/4" D
Key features include:
  • One system input connector (C38-XX)
  • One radio input connector (C3821)
  • Two optional remote PTT connectors
  • Radio transmit momentary PTT switch
  • Note: All intercom traffic is transmitted when PTT is engaged

Parts List

Data Sheet U3810
Installation/Operation Manual U3810
Model U3803

U3803 Intercom Remote Junction Module

Provides a path for expansion of the intercom system
  • Passive module
  • Expands the system beyond the Master Station
  • Contains 4 system connectors for "daisy-chaining" intercom system modules (C38-XX)
  • No controls or direct headset interface
  • Simple installation
  • Dimensions: 5-1/4" L x 5-1/4" W x 2-3/8" D

Parts List

Data Sheet U3803
Installation/Operation Manual U3803
Model U3805

U3805 Radio Interface Junction Module

Collection point for multiple radio interface cables; simplifies system interface to mobile radio
  • Passive module
  • Recommended for systems utilizing two or more radio interface Headset Stations
  • Provides a method for connecting up to four radio interface cords (C3821, through 18352G-17 connector kit) to one mobile radio (C3821)
  • Simple installation
  • Dimensions: 8-1/2" L x 5-1/4" W x 3-1/8" D

Key features include:
  • One radio output connector (C3821)
  • One primary radio interface input connector (18352G-17)
  • Three secondary radio interface input connectors (18352G-17)

Parts List

Data Sheet U3805
Installation/Operation Manual U3805
Model M-RIM

M-RIM Multi-Radio Interface Module

Provides system with connection for up to four additional mobile radios
  • Provides a simple method to increase the number of radios connected to the host system
  • Surface-mount or flush-mount via optional flush mount kit (M9840FM)
  • Marine-grade, water-tight module

Key features include:
  • Four radio receive on/off toggle switches
  • One 4-position radio transmit selection rotary switch
  • One power connector (requires 11-30VDC via C98-20PW Power Cable, not included)
  • Four radio input connectors (accepts C98-20RD series radio interface cables, not included)
  • C98-20RD Cable (not included) for radio and host system interface*
  • *18352G-05 Connector Kit, used with C98-20RD for host system interface to either Series 3800 intercom or 3800 Gateway (Wireless)
Installation/Operation Manual M-RIM
Product Bulletin M-RIM