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SPD-2000 Digital Trunking System
 
Digital Handheld Transceiver NT88D

NT88D is featured as a new generation of wireless digital transceiver, based on military D & R, integrating with eliability, high performance, hi-tech and multi-function. Digital speech,with clear voice、without cacophony,multi-digits encrypt and unable wiretapping,can extend frequency-hopping to anti-jamming.The function of digital interval transmission can xtend various application.The simple operation, slinky appearance, mini and modern design highly display the special features of the military product.

NT88D application
The departments require anti-jamming and secrecy, such as national defence,secrecy,custom suppress smuggling,railway attemper,public security and airdrome, the integrated communication system for speech and digital transmission( applying to railway).

NT88D features
To make modern technique and military art well known.

Digital communication technique

  • Digital speech compression coding make the calling much clearer.
  • 96 digits secret arithmetic make the conversation unable wiretapping and much more safety.
  • The frequency-hopping function make the communication encrypt and anti-jamming(only providing for special industry).
  • DSP high speed digital concoct demodulation performance.
  • With data transmission interface,NT88D can be connected with computer to achieve wireless communication with speed of 19.2kbps.
  • The automatic recognition function of digital analog communication.

Analog communication technique

NT88D, holding analog communication, can communicate with the common simulative equipment.

  • PAND speech compression and expansion technique make the calling clear during the simulative application.
  • AGC speech function make the calling much clearer and less than distortion.

Special functions

  • The function of force insert:during the digital communication, high priority transceiver can force to insert the communication to meet the special application.
  • The function of digital interval transmission:during the digital communication, igital interval transmission control the information and don’t effect the transceiver in process of communication. For example, Within some channel transceiver A is communicating with transceiver B,transceiver C with the same frequency can send the data to transceiver D using digital interval transmission,which function accommodate to the railway and dock application.
  • The function of automatic communication:either digital or analog way,users can setup and adjust the flexibility of voice control to make it easy to use.
  • The frequency-hopping communication:making the broadcasting station not only wiretapping but also anti-jamming.

Other functions

  • Wide frequency range:VHF136-174MHz UHF403-470MHz
  • Power self-adaptive function: according to the communication intensity,automatically adjust the power.
  • Low battery indication: automatic indication.
  • The function of high speed program copy: can copy the programmed transceiver to other transceiver,also can copy more transceivers at the same time.
  • Group-calling:organizing the users into groups at will and realizing group calling.
  • Total-calling:the high priority users can call all the users of the system.

Man-machine engineering design

With the popular design of mainframe and battery, NT88D meet the standard of USA military with anti-vibration, anti-height temperature, rain-proof and dustproof.
NT88D make the safety and magic of digital communication well known.

NT88D Specification

Parameter
Frequency range
66-88MHz
135-174MHz
220-260MHz
350-403MHz
403-470MHz
Power supply
7.5V 1600mAH(Ni-MH) 2100mAH (Li-ion)
Operation temperature
-30˚C ~ +60˚C
Frequency accuracy
2.5 ppm
Channel space
25 Kc/12.5Kc
Dimensions(L×W×H)
135×57×39 mm
Weight
410g (including transceiver, antenna, battery)
Standby current
≤50mA
Transmitter
Output power
Low: 0.5W High: 4W
Low: 0.5W ± 1dB
High: ≤5W
Low: ≤0.5W ± 1dB
High: ≤4W
Modulation
16KOF3E C4FM
16 KOF3E /8 KOF3E/ C4FM
Power of adjacent channels
≤2μW
≤2μW
power of disorderly wave of radio frequency
≤2μW
≤2μW
Receiver
Digital Sensitivity
≤-118dBm
≤-119dBm /≤-117dBm
Analog Sensitivity
≤-119dBm
≤-120dBm/≤-118dBm
Intermodulation
≥ 65dB
≥ 70dB/≥65dB
Selection
≥ 70dB
≥ 70dB/≥65dB
Spurious Response Rejection
≥ 70dB
≥ 70dB
Distortion
≤5%
SNR
≥50dB
Audio Out
≥500mW
HF rate
10 h/s
Secret key capacity
296
Functions of data transmission
Transmission velocity
9.6kbps-19.2 kbps
BER≤10-6
9.6Kbps≤-117dBm
19.2Kbps≤-111dBm

Note: According to APCO P25 Standard We Can Fill Your Large OEM Orders.

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