Lightweight, Sleek and Stylish
Dual-slot Pseudo Trunk
With this feature, a free time slot can be allocated to a member who needs to communicate urgently, effectively enhancing frequency efficiency and allowing timely communication in emergency situations
Selectable RF Power Output
Continuously adjustable from 1W to 25W.
Superior Voice Quality
Uses narrowband codec and digital error-correction technologies for superior voice clarity in noisy environments or at the edge of the coverage area. Also includes AGC technology for optimising voice input and output.
Advanced Signaling
Supports multiple advanced analogue signalling modes, including HDC1200, 2-Tone and 5-Tone for better integration into existing analogue radio fleets.
Versatile Services
In addition to conventional communication services, MD658 features rich data services and selectable functions such as: Text Message, Telemetry, Emergency, OATP and GPS.
Reliable Quality
MD658 is compliant with the stringent MIL-STD-810 C/D/E/F/G and IP54 standards, ensuring outstanding performance even in harsh environments.
GPS Positioning (Factory Option)
The built-in GPS module supports GIS applications.
General | ||
Frequency Range | UHF: 400-470MHz , VHF: 136-174MHz | |
Channel Capacity | 1024 | |
Channel Spacing | 25/20/12.5KHz* | |
Zone Capacity | 64 (each with a maximum of 16 channels) | |
Operating Voltage | 13.6 V ±15% | |
Current Drain | Standby: <0.6A; Receive: <2.0A; Transmit: <3A (1W)/<8A (25W) | |
Frequency Stability | ±0.5ppm | |
Antenna Impedance | 50Ω | |
Dimensions | 165 X 46 X 140mm | |
Weight | 1050g | |
Transmitter | ||
RF Power Output | 1-25W | |
FM Modulation | 11K0F3E @ 12.5KHz 14K0F3E @ 20KHz 16K0F3E @ 25KHz* | |
4FSK Digital Modulation | 12.5kHz Data Only: 7K60FXD 12.5kHz Data & Voice: 7K60FXW | |
Conducted/Radiated Emission | -36dBm<1GHz -30dBm>1GHz | |
Modulation Limiting | ±2.5KHz @ 12.5KHz ±4.0KHz @ 20KHz ±5.0KHz @ 25KHz* | |
FM Noise | 40dB @ 12.5KHz 43dB @ 20KHz 45dB @ 25KHz* | |
Adjacent Channel Power | 60dB @ 12.5KHz 70dB @ 20/25KHz* | |
Audio Response | +1 ~ -3dB | |
Audio Distortion | ≤3% | |
Digital Vocoder Type | AMBE++ or SELP | |
Digital Protocol | ETSI-TS102 361-1,2&3 | |
Receiver | ||
Sensitivity | Analog | 0.3μV (12dB SINAD) 0.22μV (Typical) (12dB SINAD) 0.4μV (20dB SINAD) |
Digital | 0.3μV /BER5% | |
Selectivity | TIA-603: 65dB @ 12.5KHz / 70dB @ 20&25KHz; ETSI: 60dB @ 12.5KHz / 70dB @ 20&25KHz* | |
Spurious Response Rejection | TIA-603: 75dB @ 12.5/20/25KHz; ETSI: 70dB @ 12.5/20/25KHz* | |
Intermodulation | TIA-603: 75dB @ 12.5/20/25KHz; ETSI: 70dB @ 12.5/20/25KHz* | |
Blocking | TIA-603: 90dB; ETSI: 84dB | |
Hum & Noise | 40dB @ 12.5KHz 43dB @ 20KHz 45dB @ 25KHz* | |
Rated Audio Power Output | Microphone (@20 ohm load): 1.5W; External (@8 ohm load): 7.5W | |
Max Audio Power Output | Microphone (@20 ohm load): 3W; External (@8 ohm load): 20W | |
Rated Audio Distortion | ≤3% | |
Audio Response | +1 ~ -3dB | |
Conducted Spurious Emission | < -57dBm | |
Environmental Specifications | ||
ESD | IEC 61000-4-2 (level 4) ±8kV (contact) ±15kV (air) | |
American Military Standard | MIL-STD-810 C/D/E/F/G | |
Dust & Water Intrusion | IP54 Standard | |
Humidity | Per MIL-STD-810 C/D/E/F/G Standard | |
Shock & Vibration | Per MIL-STD-810 C/D/E/F/G Standard | |
GPS | ||
TTFF (Time To First Fix) Cold Start | <1 minute | |
TTFF (Time To First Fix) Hot Start | <10 seconds | |
Horizontal Accuracy | <10 meters |
*20KHz/25KHz will not be available on new equipment in the U.S. after 2011-01-01.
MD65X, X=0, 2, 5,6 or 8, model number varies geographically. For details, please contact our regional sales representatives.
All specifications are subject to change without notice due to continuous development.
en_MD658 Brochure update: 2023-07-18 |
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