Conventional - DIGITAL

DIGITAL TWO WAY RADIOS:

Two-way radio has moved beyond the realm of public safety to become an invaluable tool for mobile professionals whether it is air to surface or surface to surface, in a wide range of enterprises. The number of users, equipment, demand for quality and congested spectrum availability is giving way to digital radios and replacing the existing analogue radio. The digital two way radios are spectrum efficient with superior voice and data communication capability and interoperability to communicate the signals beyond normal radio range. Spectrum efficiency is achieved by Frequency Division Multiple Access (FDMA). At present conventional VHF/UHF walkie talkies/base radios uses channel spacing of 12.5 KHz for voice communication. A digital radio with same channel spacing will accommodate two voice channels and all the superior feature of voice clarity, security, interoperability etc. For Organization with large number of existing radios, we have digital radios with easy migration feature, i.e. it can communicate with digital as well as existing analogue radios automatically.

The NXDN? Digital Advantage

In analog systems as the signal strength decreases in low-coverage areas, noise and dropouts increase, severely degrading intelligibility. However, with the NXDN? digital system, which features enhanced Forward Error Correction (FEC), the digitized audio stream is less susceptible to noise, resulting in superior clarity at varying signal strengths. System operators converting from analog to NEXEDGE? typically comment that users now receive calls in areas that were out of range before. NXDN? reduces lost or misinterpreted calls and the need for repeat calls, thus enhancing workforce productivity.

NXDN?

A key element of the NXDN? air interface is the AMBE+2? vocoder which digitizes speech while retaining natural voice nuances, performs noise reduction, introduces FEC and compresses this voice data to accommodate land mobile radio data rates. Next, the radio's digital signal processor (DSP) protocol- packages the vocoder, signaling, control, and more FEC data together and converts this to a uniquely filtered 4-Level FSK digital waveform that modulates the transmitter. This results in an unusually low bit-error-rate digital air interface delivering robust communications even in weak signal strength areas. The NXDN? air interface is capable of fitting into both narrow 12.5 kHz and very narrow 6.25 kHz bandwidth channels meeting the tightest of spectrum efficiency requirements (9600 bps @ 8.3 kHz and 4800 bps @ 4 kHz occupied bandwidth respectively). NXDN? is a Frequency Division Multiple Access (FDMA) methodology whereby one user accesses a channel frequency at any one point in time (i.e. accesses via the frequency domain). Other digital methods such as Time Division Multiple Access (TDMA) permit more than one user to access the channel frequency via timeslots (i.e. accesses via the time domain), but there has to be a tradeoff between coverage and effective transmission rate, as increasing the former means decreasing the latter.

NX-220/320

VHF/UHF Digital & FM Portable Radios

General Features

- 136-174, 400-470, 450-520*1 MHz Models
- 5 W RF Output Power
- 260 Channel / Group ID with 128 Zones (LCD Models)
- 64 Channel / Group ID with 4 Zones (Non LCD Models)
- 12-Key Keypad Models Available
- Emergency/AUX Key
- 8 Character Alphanumeric Aliases Display
- Backlit LCD with Backlit Keys
- Built-in Motion Sensor
- Zone / Channel Number Voice Announcement
- 500 mW Speaker Audio
- VOX (Voice Operating) Ready
- Flash Firmware Upgrading
- MIL-STD-810 C/D/E/F/G
- MIL-Spec Speaker Mic Options Available
- IP54/55 Water & Dust Intrusion

DOWNLOAD BROCHURE

NX-200/300

VHF/UHF Digital & FM Portable Radios

General Features

- 136-174, 400-470, 450-520*1 MHz Models
- 5 W RF Output Power
- 512 Channel / Group ID with 128 Zones
- 6 Front & 2 Side PF keys
- 12-Key Keypad Models Available
- Emergency/AUX Key
- 14 Character Alphanumeric Aliases Display
- Backlit Dot Matrix LCD with Backlit Keys
- 3-Digit Sub-Display
- Date & 12/24 Hour Time Clock
- Multi-Language Display
- 500 mW Speaker Audio
- VOX (Voice Operating) Ready
- Dual Priority Scan (Conventional)
- Flash Firmware Upgrading
- MIL-STD-810 C/D/E/F/G
- MIL-Spec Speaker Mic Options Available
- IP54/55/67*2 Water & Dust Intrusion
- Intrinsically Safe Option*3
*1: 450-520 MHz is available for models applicable FCC and IC Standards.
*2: IP67 is available for models applicable ETSI EN Standards.
*3: Intrinsically Safe Option is available for models applicable FCC and IC Standards.

DOWNLOAD BROCHURE

NX-700(H)/800(H)

VHF/UHF Digital & FM Mobile Radios

General Features

- 30 W / 50 W (136-174 MHz) Models*1
- 30 W / 45 W (400-470, 450-520 MHz) Models*1
- 25 W (136-174 MHz) Models*2
- 25 W (450-470 MHz) Models*2
- 512 Channel / Group ID with 128 Zones
- 6 Front PF keys & 4 Up/Down Selectors
- Emergency/AUX Key
- 14 Character Alphanumeric Aliases Display
- Backlit Dot Matrix LCD with Backlit Keys
- 3-Digit Sub-Display
- Date & 12/24 Hour Time Clock
- Multi-Language Display
- 4 W Speaker Audio
- Dual Priority Scan (Conventional)
- Dash & Remote Mount
- DB-25 Accessory Connector
- Flash Firmware Upgrading
- MIL-Spec Standard Mic
- MIL-Spec 12-Key DTMF Mic Option Available
- MIL-STD-810 C/D/E/F
- MIL-STD "Driven-Rain"
- IP54/55 Water & Dust Intrusion
*1: Applicable FCC and IC standards.
*2: Applicable ETSI EN Standards.

DOWNLOAD BROCHURE

NX-700/800

VHF/UHF Digital & FM Mobile Radios

General Features

- 136-154, 146-174, 400-430, 450-480, 480-512 MHz Models*1
- 146-174, 400-430, 440-470 MHz Models*2
- 400-430 (RX), 440-470(TX) MHz Crossband*2
- 5 W Output (100% Duty Cycle)*1
- 5-25 W Output (100% Duty Cycle)*2
- Repeater or Base Operation Available
- 1U 19-Inch Rack Mountable
- 6 Programmable Function Keys
- Two-Digit LED Display
- 30 CH Scanning Base (Conventional)
- 3 W External Speaker Audio
- Program / Modem Interface
- Remote Termination Interface
- DTMF AUX Output Control
- DTMF AUX Input Monitoring
- Programmable AUX I/O's
- Flash Firmware Upgrading
*1: Applicable FCC and IC Standards.
*2: Applicable ETSI EN Standards.

DOWNLOAD BROCHURE

NXR-710/810

VHF/UHF Digital & FM Base Units

General Features

- 136-174 MHz, 50W Models
- 400-470, 450-520*1 MHz, 40 W Models
- Repeater Operation
- Duplex / Simplex Base Operation
- 30 CH Scanning Base
- Two-Digit LED Display
- 6 Lighted Programmable Function Keys
- Front Panel Speaker
- Rear External Speaker Output (4 Watts Audio)
- Volume Control
- Microphone Jack
- Program Interface
- Remote Termination Interface
- Programmable AUX I/O's
- RF Power Down Detect
- DTMF Front Panel PF Key Control
- DTMF AUX Output Control
- DTMF AUX Input Monitoring
- External Frequency Reference (10 MHz) Connectivity
- Windows? PC Programming
- Flash Firmware Upgrading

DOWNLOAD BROCHURE