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.

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 AT&T, Verizon
mSATA data storage
74V power supply
– 40 to +80 C operating temp

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

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.

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

JEM Power Shedder

The JEM Power Shedder is UL Recognized E509290 and 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 the JEM PS Config Tool for gathering data and program changes. 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” 74VDC 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 51.8 to 92.5 VDC.
Maximum input voltage is 92.5 VDC.
Typical current draw is 80 mA with outputs turned OFF.
Maximum current is 10A for each output, but not more than 20A 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 10A.
Two unconditioned 74VDC 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.
Access Self-Test diagnostics and event data log files using the JEM PS Advanced Config Tool.
FCC Part 15 Sub-part B Class A.
AAR S-9401 Vehicle Interior Cab Environment; Temperature, Altitude, Humidity, Vibration, Shock, EMI.

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.

Improved display, mic, and speaker.
Configurable: audio, menus, volume, brightness, lock out mode, talk groups, 16-bit features.
Recessed keypad, new RAN and Menu buttons.
One piece or two piece configuration.
Can support dual heads.
Can configure to operate like our JEM I, for ease of training.
Bluetooth and headset compatible.
Ethernet: GPS, locomotive ID, real-time remote download, text messages, customizable features.

Wired Microphone

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 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 pounds. 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 pounds
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