Tetra Band-Adjustable Digital Repeater System/ Digital 380MHz BDA System
| Type: | Tetra Repeater | 380MHz Frequency Range: | UL380-385MHz,DL390-395MHz |
| Gain: | UL:80±2 DB,DL:85±2 DB | Output Power: | UL: 20±2 DBm, DL:33±2 DBm |
| EVM: | 8% | Noise Figure: | 8dB |
| VSWR: | ≤1.8 | Power Supply: | AC100/ 240V |
Digital Tetra band selective repeater system
Tetra Digital Repeater is a telecommunications device used to extend the coverage range of Very High Frequency (Tetra: 30–300 MHz) digital radio communication systems. Here’s a concise
Core Functions:
1. Signal Reception:
* Receives weak/attenuated digital radio signals (e.g., DMR, dPMR, P25 Phase 2) within the Tetra band from user equipment (e.g., handheld radios).
2. Digital Processing:
* Decodes, regenerates, and error-corrects the digital signal (unlike analog repeaters that amplify noise).
3. Signal Retransmission:
* Rebroadcasts the cleaned digital signal at higher power to distant or obstructed areas.
Key Advantages:
* Extended Coverage: Overcomes terrain obstructions (buildings, hills) and Tetra range limitations (~5–50 km line-of-sight).
* Signal Integrity: Regeneration prevents noise/error accumulation, maintaining voice/data quality.
* Spectral Efficiency: Supports digital modulation (e.g., TDMA), enabling multiple users on one frequency.
Feature
* Digital filtering supports adjustable bandwidth, each band supports three sub-bands.
* Each sub-band is turned on and off, and gain control is performed separately.
* Donor signal monitoring for easy optimization and troubleshooting
* Intelligent algorithm to prevent UL interference.
* Self-control to minimize interference for new rollout e-Node B.
Technical Specifications:
| Items | Specifications | |
| System | Tetra | |
|
Frequency Range |
Uplink(Rx) |
380-385MHz |
| Downlink(Tx) |
390-395MHz |
|
| Bandwidth | ≦ 20MHz/0.2MHz | |
|
Maximum Output Power |
Uplink | 20±2dBm |
| Downlink | 33±2dBm | |
| Maximum Gain | 80±3dB | |
| AGC Range | ≥20dB | |
| Maximum Input power(Non-Destructive) | ≤-10dBm | |
| VSWR | ≤ 2.4 | |
| System Delay | ≤ 6 μs | |
| I/O Impedance | 50 Ω | |
| Noise Figure | ≤ 8dB | |
|
Spurious Emission |
9kHz~ 1GHz: ≤ -36dBm | |
| 1GHz~ 12.75GHz:≤-30dBm | ||
| Third-order Inter-Modulation | ≤ -40dBm | |
| RF Connector | 2*N-Female | |
| Power Consumption | ≤ 30W | |
| Power Supply | Input:AC100~ 240V, 50/60Hz | |
| Dimensions | 450*335*180mm mm | |
| Weight | ≤ 12kg | |
| Alarm Monitoring System | Alarm for Uplink Self-Oscillation | |
| Isolation Detection | Isolation Check During Boot Time | |
| Operating Temperature | -10 ~ +50 °C | |
| Application | Indoor or Outdoor(IP65) | |
| Relative Humidity Range | ≤95%(Non condensing) | |
| Mounting | Wall Mounting | |
FAQ:
1. Are you trading company or manufacturer ? Could I use our own logo and label? We are the factory, with good trading service.
2. Can I have a sample order? What is your MOQ?
Yes, we welcome sample order to test and check quality. MOQ is 1 for normal products.
3: Is it easy to set up your items?
Yes. We have a user manual and support technical support 24/7.
4. What is your warranty time?
We promise 3-year warranty for all products shipped from us. Man-made sabotage and natural factors are not within the scope of warranty.
We have CE, ROHS, CCC etc, certificates .
6. Please feel free to contact us if there are any other questions.
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S빠른 배송..신속한 소통 .요구사항에 대한 빠른 회신
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HAll ATNJ products are very well made at a reasonable price. Our clients are delighted with their products and their service and attention is phenomenal. Really recommend them
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ALivraison dans un délai acceptable par voie aérienne. Qualité : j'attends d'installer totalement l'appareil.
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