900 MHz Wireless Radio, Non-line-of-sight
Broadband Wireless Access Network
- Up to 20-mile range, 18 dB fade margin
- 3 Mbps usable subscriber throughput
- 4 non-overlapping channels, 6 MHz apart
- Dual polarized antenna, external antenna connector
- Robust interference rejection (ARQ)
- Deliver broadband Internet through foliage and other obstructions
- Easy management via Telnet, SNMP or HTTP Web browser
The M900S Series point-to-multipoint wireless broadband internet access (BWA) platform utilizes the advantages of the 900 MHz license-exempt spectrum and delivers up to 3 Mbps to the subscriber unit. Ideal for non-line-of-sight (NLOS) deployment, this fully integrated outdoor system includes internal dual polarized antennas as well as connectors for optional external antennas.
900 MHz Non-Line-of-Sight Performance
The M900S Series was designed for deployment in areas where foliage and other obstructions obscure line-of-sight between the access point (AP) and subscriber unit (SU). The 900 MHz system offers excellent receiver sensitivity and best-in-class overall system gain for outstanding non-line-of-sight (NLOS) range. The subscriber can expect typical NLOS performance of up to 6 miles or beyond*. Use of external antennas increases range and fade margin even farther. In addition, Spread Spectrum modulation promotes resistance to multipath fading. Combining Trango's state-of-the-art SMARTPolling™ with Spread Spectrum modulation results in maximum cell performance.
The M900S AP and SU each include an integrated 10 dBi dual polarized patch antenna as well as a connector for optional external antennas. The lower cost M915S2-SU-EXT features only a connector for an external antenna. External antenna options include omni antennas for the AP and yagi-style antennas for both the AP and SU. The auto-sensing feature on the M900S SU allows the firmware to choose the antenna with the strongest signal, or the user can manually select either the internal or external antenna.
The system delivers up to 3 Mbps and utilizes Trango's patented SMARTPolling™ algorithm (U.S. patent 7,127,255) to dynamically and adaptively poll subscriber units, ensuring the lowest latency for active subscribers.
900 MHz Channel Flexibility
The system is configured with four channels, each 6 MHz apart. The user can redefine channels by selecting frequencies in single MHz increments. The SU scans all channels until it associates with a properly configured AP. This allows redundancy of APs as well as a simple and quick method to switch channels on an entire sector.
The M900S Series offers powerful resistance to interference with the Automatic Repeat Request (ARQ) feature which automatically retransmits packets to mask RF errors to higher layer protocols. In addition, the system includes interference mitigation tools such as software selectable dual polarity antennas, automatic SU power leveling, and threshold control.
The M900S radios are fully weatherized outdoor units featuring Power-over-Ethernet (PoE) designed for quick deployment and easy installation.
The system offers remote and local management via Telnet, SNMP and HTTP via browser. Powerful tools such as site survey and upstream/downstream CIR/MIR controls allow operators total control and flexibility in managing their network.
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|M900S SU||M915S2 EXT SU|
|10 Pack||10 Pack|
|30 Pack||30 Pack|
Documents & Information
The M900S™ 900 MHz Wireless Broadband System is ideal for:
- AP or SU radio
- Standard Power Supply
- Power-over-Ethernet (PoE) injector
- Mounting bracket for wall/pole
** EXT model includes only a connector for an external antenna and does not include an integrated antenna
Exclusive PtMP Technology
SMARTPolling™ (U.S. patent 7,127,255) is a unique and powerful prioritization scheme designed to ensure the highest quality of service, such as VoIP, to each user at the maximum assigned throughput. The AP will poll each SU in a round-robin fashion, favoring subscribers which are busy passing traffic. For this reason the SMARTPolling™ protocol is adaptive and dynamic as opposed to straight Time Division Duplex (TDD). Added control of the polling sequence is provided by the ability for network operators to specify certain subscribers as PRIORITY in which case these subscribers will be polled more frequently thus guaranteeing even lower latency for critical clients.
|900 MHz System Specifications|
|Frequency of Operation||902 MHz to 928 MHz|
|User Data Throughput||3 Mbps|
|-90 dBm typical|
|RF Power Output||M900S AP & SU: +26 dBm Max Setting, -4 dBm Min Setting
M915S2-SU-EXT: +26 dBm Max Setting, 0 dBm Min Setting
|LED Indicators||7 LEDs including 4 RSSI|
|Modulation Format||Direct Sequence Spread Spectrum (DSSS) with RAKE|
|Access Method||TDD with SMARTPolling™|
|Maximum SUs per AP||126|
|Configuration/Management||Telnet, SNMP (via AP), TFTP, HTTP|
|Internal Antenna||M900S AP & SU: Integrated 10 dBi 60° X 60° patch dual polarized (HPOL/VPOL)|
|Internal Antenna Polarization||Horizontal / Vertical (Software Switchable)|
|External Antenna Connection||Reverse Polarity SMA (RP-SMA)|
|Omni Antenna** (Optional)||8.5 dBi 360° X 10° (VPOL) - Comtelco Part # BS915XL7** (Requires N-SMA RP adapter)|
|Yagi Antenna** (Optional)||8 dBi 70 ° X 90 ° (VPOL or HPOL) - Trango part # AD900-8Y-RP** (comes with N-SMA RP adapter)|
|Yagi Antenna** (Optional)||15 dBi 30° X 30° (VPOL or HPOL) - Cushcraft part # PC9013N** (Requires N-SMA RP adapter)|
|Physical Interfaces||10/100 Ethernet Autosensing, Serial Port (RJ11)|
|Power Method||Power-over-Ethernet (PoE Injector JBox included)|
|Voltage Limits||10.5 VDC 24 VDC|
|Enclosure Type||M900S AP, SU, & M915S2-SU-EXT: All-weather, powder coated, cast aluminum with polycarbonate radome|
|Temp Range||-40° to 60° C (-40° to 140° F)|
|Radio Dimensions||M900S AP, SU, & M915S2-SU-EXT: 12.5" x 8" x 2.75"|
|Radio Weight||M900S AP, SU, & M915S2-SU-EXT: 4 lbs.|
* Non-line-of-sight range and throughput may vary due to antenna height, leaf density, moisture content, and other environmental factors.
** NOTE: These external antennas require a Reverse Polarity SMA MALE to Standard N MALE-50 OHM RG142B/U Coax Adapter