Railroad Communications


With a variety of configuration options and an extensive network of manufacturing partners, JEM has become a quality standard among railroads.​

Our Railroad Products

JEM began its collaboration with the railroad industry with the introduction of the JEM Radio in 2004. Since then we've expanded our portfolio to include a wide array of communications equipment and peripherals, tailored explicitly for the modern locomotive.
Ancillary Card Cage
JEM ACC
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JEM Ancillary Card Cage
​​
The JEM ACC is a communications command and control system. The ACC can be configured with your choice of numerous modules to perform a variety of communications functions.
  • Data router and information management
  • 2 processors (router, back office)
  • Windows and Linux capability
  • Business Apps:
    • Watt meter
    • Loco health parameters
    • Event recorder
    • Fuel / Economy
    • PTC GPS location authority
    • Control systems
  • WIFI download and upload
  • Remote troubleshooting and data analysis
  • Cell coverage ATT, Verizon
  • mSATA data storage
  • 74 V power supply
  • - 40 to +80 C operating temp
Antenna Farm
JEM Antenna Farm
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JEM Antenna Farm

The JEM Antenna Farm is a roof-mounted antenna grouping and spacing system. The Antenna Farm also serves as a cable management receptacle, providing one entry point into the locomotive.
  • Improved ground plane
  • Optimized location and spacing for signal strength and frequency interference
  • One entry point through roof
  • Ease of maintenance / upgrade
  • Filter bank for improved isolation
  • LMR 400 UltraFlex (reduced line loss improved isolation) custom lengths
  • Integrated enclosure (antennas, cables, filters and hardware)
  • Functionality: voice radio, digital cell, 220 MHz radio, ACC 802.11, DP, HOT EOT, PTC GPS, Spec 200, ER downloader, OEM GPS
Antenna Test Fixture
JEM Antenna Farm
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JEM Antenna Test Fixture

Features
  • Portable antenna and cable troubleshooting fixture.
  • Troubleshoot from within the Cab, no need to access cab roof or antenna mounting system.
  • Supports Digital Cell, GPS, and 802.11 WIFI.
  • Magnetic mounting to exterior of Cab.
  • Comes with rugged carrying - storage case.​
Cab Imaging Camera
JEM CIC
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JEM Cab Imaging Camera

​The JEM Cab Imaging Camera (CIC) is a cab-facing cell phone detection and cab recording device.
  • Records only if an event is detected.
  • Day and night operation
  • Adjustable gain and attenuation.
  • 180 degree high resolution with IR.
  • One camera covers the entire cab.
  • Standard and custom cabling.
  • Real-time remote programming.
Power Shedder
JEM CIC
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JEM Power Shedder

​The Power Shedder provides ON/OFF control of four (4) conditioned and two (2) unconditioned 74 VDC power outputs, one Ethernet port to communicate with an external device, and three (3) inputs for controlling the output power state.  The Power Shedder must be used in combination with the Power Line Filter which provides the input circuit breaker, surge protection and “clean” 74 VDC power.  There are two panel configurations that provide the Power Line Filter, Power Shedder, and associated load circuit breakers.

​Specifications
  • Typical operating input voltage is 35 to 80 VDC.
  • Maximum input voltage is 100 VDC.
  • Typical current draw is 80 mA with outputs turned OFF.
  • Maximum current is 10 A for each output, but not more than 40 A total for all six outputs combined.
  • Four conditioned 74 VDC output ports (1 through 4) maintain output voltage above 52 VDC during short duration power sags lasting less than 10 +/- 4 seconds (load dependent) when the combined current for all four of the conditioned ports is less than 10 A.
  • Two unconditioned 74 VDC output ports (5 and 6) simply follow the input voltage.
  • One IEEE 802.3 10/100M front panel port.
    • ​8 pin M12 interface (A coded).
    • Multicast message sent until shutdown timer expires indicating a shutdown sequence in progress.​
  • Three 74 VDC input control lines.
    • Knife sense monitors + terminal a circuit associated with the Knife Switch cold side to indicate Knife  OPEN/CLOSED.
    • Engine sense monitors the + terminal of a circuit associated with Engine ON/OFF.
    • Aux sense (future) is not currently used.
  • LED status of Output Active, Link/Activity, and Processor Health.
  • Auto wake-up periodically powers select outputs on a scheduled basis for a configured amount of time.
  • Self-Test diagnostics and event data log files.
  • FCC Part 15 Sub-part B Class A.
  • AAR S-9401 Vehicle Interior Cab Environment; Temperature, Altitude, Humidity, Vibration, Shock, EMI.
Radio
JEM Radio II
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​JEM Radio II

The next generation of our popular JEM Radio. The JEM Radio II has increased hardware durability, enhanced firmware/software, and more customization options than ever before.
  • ​Ethernet: GPS, locomotive ID, real-time remote download, text messages, customizable features.
  • Configurable: audio, menus, volume, brightness, lock out mode, talk groups, 16-bit features.
  • Recessed key pad, new RAN and Menu buttons.
  • One piece or 2 piece configuration.
  • Can support dual heads.
  • Improved display, mic, and speaker.
  • Can configure to operate like our JEM I, for ease of training.
  • Remote diagnostics via virtual control head.
  • Bluetooth and headset compatible.
JEM Radio II Quick Start Guide
File Size: 859 kb
File Type: pdf
Download File
JEM Radio II Operation Guide
File Size: 877 kb
File Type: pdf
Download File
JEM Radio II Software Guide
File Size: 1721 kb
File Type: pdf
Download File
​​Wireless Bluetooth Headset
Sensear SM1P Headset
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  • Clear two-way radio communication in high-noise environments.
  • Bluetooth cellular connection for conversation and audio streaming.
  • Limit ‘in-ear’ exposure to 82 dB(A).
  • Compatible with industry leading two-way radios via wired connection or Bluetooth.
  • Improved Short Range with additional channel banks.
  • Upgraded 24-hour battery life for use in multiple shifts.
  • Available in headband, behind-the-neck, and helmet style.
  • SENS® Technology - remain aware of surrounding noises and hazards.
  • Enhances speech while suppressing background noise to a safe level (for face-to-face conversations).
  • Noise-cancelling boom mic.
​​Wired Microphone
Microphone
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The AAR Palm microphone can be used in the cab locomotive.  It is durable and reliable when subjected to a harsh environment.
  • Amphenol 6 Pin MS3106A14S-6P
  • Supply – 5VDC – 18VDC
  • Current Drain:  Less than 20mA
  • Coil Cable retracted length: 20” to 40”
  • Cable elongation > 4:1
JEM Radio I
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JEM Radio I (Discontinued)

The JEM Radio is a clean cab radio which is designed to function as a one piece or a two piece radio. The JEM Radio I has all of the form fit and function of the AAR requirements.
  • Reliable voice communication, conventional or trunking.
  • One-piece or two-piece JEM Radio configuration.
  • Programmable option to disable 25 KHz in year 2013.
  • Programmable HOME numbers.
  • Programmable PLL tones.
  • ICOM or Kenwood core radio.​
JEM Radio I Configuration Tool
File Size: 27 kb
File Type: zip
Download File
6.25 kHz Digital JEM Radio I User Guide
File Size: 498 kb
File Type: pdf
Download File
12.5 kHz - 25 kHz JEM Radio I User Guide
File Size: 581 kb
File Type: pdf
Download File
XTR
JEM XTR
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JEM XTR III

​Keep your Pull-back Stop Protection zones (PSP) safe and in-spec more quickly and safely than ever. The XTR III is a lightweight RCL Transponder (Puck) diagnostic reader for all current Pucks on the market.

​Because of its light-weight design, employees of all abilities can easily scan pucks while remaining clear of the track. Some current Puck readers weigh as much as 20 lbs; ours is less than 3 lbs. Its light weight also means faster and safer movement through the yard in all weather conditions.

The XTR III reports Transponder ID number, Active/Non-active status, battery strength, GPS location and signal strength. Improve yard safety, fuel consumption and PSP zones by providing the latest in Yard RCL Transponder diagnostics.

Features
  • Weighs less than 3 lbs
  • Provides multiple diagnostics
  • Reads all pucks
  • Compact and easy to use
  • Comes with carrying case for storage and protection
  • USB charging
  • Location logging for tag reads
  • Reads a wide variety of tag formats
Compatible Tag Types
  • AAR S-5702 6-bit ASCII
  • AAR S-5702 128-bit format code 0x33 railcar tags
  • Union Switch and Signal Digitrac and compatible transponders
JEM XTR Terminal Software
File Size: 170 kb
File Type: zip
Download File
JEM XTR Quick Guide
File Size: 463 kb
File Type: pdf
Download File
2115 Victor Place
Colorado Springs, Colorado 80915
Toll Free - 800.284.0399
Local - 719.574.5541
Fax - 719.574.5140