2. Introduction of JUE-501/JUE-251 
 
 
2.2 Features 
Meeting the latest FleetBroadband SDM 
The  JUE-501  meets the latest Inmarsat  FleetBroadband FB500  technical requirements  (SDM)  and 
JUE-251  also meets  the latest Inmarsat  FleetBroadband FB250  technical requirements  (SDM). They 
are  suitable solutions  for  satellite communications  equipment for any type of vessel, navigating the 
world’s oceans. 
High quality and low communication cost 
The  JUE-501/JUE-251  provides  following  services  using Broadband Global Area Network (BGAN) 
offered from Inmarsat. 
-Low cost global voice service: 4kbps Voice   
-G3FAX and legacy analogue modem service using 64kbps 3.1kHz Audio service 
( unavailable for 
the JUE-251 when satellite elevation angle (EL) value is less than 20 degrees) 
 
-Standard IP service at speed up to 432kbps over a shared channel 
(Up to 284kbps for JUE-251) 
-Streaming IP service (8k, 16k, 32k, 64k, 128k, and 256kbps) (Up to 128kbps for JUE-251) 
-UDI/RDI service (unavailable for JUE-251) 
-SMS (maximum number of characters are 160) 
* The service available to you is depending on the contract. 
Stylish, Light weight, Space-saving, and Gyro-less   
The JUE-501/JUE-251  can be installed on vessels of all sizes due to the compact and lightweight 
design of the ADE.  The adoption of an active  and  Gyro-less  antenna structure makes this unit a 
perfect fit for small vessels. 
With the use of a single coaxial cable as the control line between the ADE and BDE the installation of 
the JUE-501/JUE-251 is simple and easy. 
The Rewindless antenna produces uninterrupted communication during course change. 
Adaptive to various networks 
The JUE-501/JUE-251 has multiple Interfaces including Ethernet, ISDN, 2TEL ports (maximum 6 TEL 
ports)*, and Handset as standard equipment.    An output port for WRF (Wide-band Radio Frequency) 
is also provided. 
*Standard equipment provides 2 telephones, and 4 more telephones can be connected when 
connecting Junction Board (JB), as optional equipment.    
Self-diagnosis system 
The built-in self-diagnosis system continually monitors the status of the JUE-501/JUE-251  and 
indicates the warnings if any errors are detected.