NX-700 Mobile/Base Digital Radio Information
|
The Kenwood NEXEDGE™ NX-700 Series Radios |
The Kenwood NX-700(H) is a 50 watt mobile digital radio. All MCFD apparatus and fire stations will be equipped with this radio. The NX-700 is very similar to the analog Kenwood radios previously used by the Department; therefore, their basic functions should be familiar. However, these radios have numerous useful features that were previously unavailable. (See below for operating instructions) |
Understanding NXDN™ Digital Technology |
First, we'll talk about the difference between NEXEDGE™ and NXDN™. NEXEDGE™ is a brand name for a line of Kenwood radios, not a type of technology. On the other hand, NXDN™ is a protocol name for a type of digital radio technology using the FSK (frequency-shift keying) modulation scheme. Simply put, NXDN™ is the name for the technology inside the radio that makes it work differently than other radios. NXDN™ is a digital technology but it is NOT compatible with APCO Project 25, Motorola TRBO™, TETRA or any other digital radio standard. When we hear "digital radio" in Kentucky, we typically think of KSP's digital repeater system or the statewide digital system used by KyEM and the KY National Guard. Both of these systems are based on P25 technology and are completely incompatible with the new MCFD radios. |
Why is MCFD Going Digital? |
In 2004, the Federal Communications Commission issued a mandate requiring that certain radio users would be required to update their radio systems to operate on 12.5 kHz narrowband voice channels by January 1, 2013. Our switch to the new NEXEDGE™ system will satisfy the FCC narrowband requirement and give us access to some of the benefits of digital radio such as individual and group calling, as well as increased coverage and greatly improved voice quality. |
Purchasing Your Own Radio |
MCFD members are welcome to purchase a radio to use on the MCFD NEXEDGE™ system. Several electronics companies were involved in the development of NXDN™ technology; however, only two radio manfacturers produce mobile radios compatible with our system. Our system is a conventional repeater system in the VHF frequency range. The Kenwood NX-700 and ICOM iDAS™ IC-F5061D and IC-F5121D radios are the only mobile radios that will work on the system. If you purchase an ICOM, you must get the "D" version or the analog version with the UT-119H digital unit installed. To see pictures and descriptions of compatible radios, see our "Radio ID" page. Although ICOM and Kenwood developed this technology together, there may be certain features on ICOM radios such as the scrambler and individual/group call functions that will not work with the Kenwood infrastructure and other Kenwood radios. For that reason, the Department purchased Kenwoods exclusively. Again, no other mobile radio will work on the digital side of our system, regardless of what you may have heard. If you have questions, please contact Unit 102 or Unit 1220 prior to making your purchase. For information on portable radios, see the portable radio page . |
NX-700 Documents |
Click here for the NX-700 series Instruction Manual |
NX-700 Front Panel Key Functions (as configured for MCFD) |
 |
|
|
Primary Function
|
Secondary Function
|
|
Power Switch
|
None
|
|
Volume Up
|
None
|
|
Volume Down
|
None
|
|
Channel Up
|
None
|
|
Channel Down
|
None
|
|
LED Indicator
|
N/A
|
|
Function
|
Clock
|
|
Menu
|
N/A
|
|
Talk-around
|
Display Format
|
|
Zone Down
|
Maintenance
|
|
Zone Up
|
Scan A/D
|
|
Scan
|
Status
|
|