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DR-850 Handheld DMR Digital Radio Two Way
- Commodity name： DR-850 Handheld DMR Digital Radio Two Way
- Model Number： DR-850
- Brand： Kydera
- Product Origin： Quanzhou
- Type： Two Way Radio
Category：
Detailed Introduction
DR-850 Handheld DMR digital radio two way
Main Features
• Private call
• Group call
• All call
• Kill
• Revive
• Battery save mode
• One-touch call
• Call alert
• Records for 200 hours
• Low power voice/icon prompt
• Prompt tone on/off
• Remote monitor
• Support voice prompt for channel switching or function-option
• Two programmable buttons for long pressing are available on the side
Features
1.True-2-slot
2.Support both digital and analog modes.
3.To adopt the TFT color display, convenient operation.
4. Be with TFT color display interface and visible icon display.
5. Support up to 4000 channels.
6. Support to modify and set the frequency via keypad.
7. Using 2000mAh polymer lithium battery.
DMR digital radio, short for Digital Mobile Radio, is a type of digital two-way radio technology that offers numerous advantages over traditional analog radios. DMR digital radios provide crystal-clear audio quality, improved coverage, and enhanced privacy features, making them ideal for professional users in industries such as public safety, transportation, and manufacturing. The digital nature of DMR technology allows for more efficient use of frequency spectrum, enabling multiple users to communicate simultaneously on the same channel without interference. One key feature of DMR digital radios is their compatibility with both analog and digital modes providing a smooth transition organizations upgrading from analog systems to digital technology. DMR digital radios support advanced features like text messaging, GPS tracking, and encryption, enhancing communication capabilities and ensuring secure and reliable information exchange With options for individual calling, group calling, and seamless between radio sites, DMR digital radios offer a flexible scalable communication solution for businesses and agencies that require robust and efficient communication tools.
| Specification | ||
| Model | DR-850 | |
| Items | UHF | VHF |
| FrequencyRange | 400-480MHZ; 350-390MHZ | 136-174MHZ; 245MHZ |
| Channel Zone | 16 | |
| Total Channel Capacity (512) | 4000 (250 Channels/Zone) | |
| Antenna Impedance | 50Ω | |
| Dimension (H x W x D) | 102 x 54 x 35mm | |
| Weight (W/Battery) | 225G | |
| Li-polBattery | 2000mAh | |
| Rated Voltage | DC: 7.4V | |
| Battery life: The average battery life under5/5/90duty cycle, and using carrier squelch and TX high power. 2000mAh Li-pol battery: Analog: 9.6 hours / Digital: 13.7 hours | ||
| Receiver | ||
| Frequency | 400-480MHZ; 350-390MHZ | 136-174MHZ; 245MHZ |
| Channel Spacing | 12.5kHz /25kHZ | |
| Frequency Stability (-20℃,+60℃,+25℃) | + / - 1.5ppm | |
| Analog Sensitivity (12 dB SINAD) | 0.3uV / 0.25uV | |
| Digital Sensitivity (5% BER) | 0.25uV / 0.20uV | |
| Intermediation | 65dB | |
| Adjacent Channel Selectivity | 60dB@12.5kHz / 65dB@25kHz | |
| Spurious Rejection | 65dB | |
| Rated Audio | 500mw | |
| Audio Distortion @Rated Audio | 3% | |
| FM Hum & Noise | -40dB @12.5kHz / -45dB @25kHz | |
| Audio Response | +1,-3dB | |
| Conducted /Radiated Emission | -57dBm | |
| Transmitter | |||
| Frequency | 400-480MHZ; 350-390MHZ | 136-174MHZ; 245MHZ | |
| Channel Spacing | 12.5kHz /25kHZ | ||
| Frequency Stability (-20℃,+60℃,+25℃) | + / - 1.5ppm | ||
| Low Power | 1W | 2W | |
| High Power | 4.5W | 5W | |
| Modulation Restriction | ±2.5kHz@12.5kHz /±5kHz@25kHz | ||
| FM Hum & Noise | -40dB @12.5kHz / -45dB @25kHz | ||
| Conducted /Radiated Emission | -36dBm＜1GHz / -30dBm＞1GHz | ||
| Adjacent Channel Selectivity | -60dB@12.5kHz / -65dB@25kHz | ||
| Audio Response | +1,-3dB | ||
| Audio Distortion | 3% | ||
| FM Modulation | 12.5kHz: 11K0F3E ; 25kHz: 16K0F3E | ||
| 4FSK Digital Modulation | 12.5kHz Data: 7K60F1D & 7K60FXD ; 12.5kHz Audio: 7K60F1E & 7K60FXE ; 12.5kHz Data & Audio: 7K60F1W | ||
| Digital Vocoder | AMBE+2 ™ | ||
| Digital Agreement | ETSI-TS102 361-1, -2, -3 | ||
| GPS(Optional) | |
| Precisely and standard designed for a long-term positioning( 95% value＞could find 5 satellites @ rated -130dBm signal strength | |
| TTFF (time to first fix) cold start | ＜ 1 min |
| TTFF (time to first fix) warm start | ＜ 10 s |
| Horizontal Position Accuracy | ＜ 10 ms |
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