
The MDM9000 Satellite Modem from ST Engineering iDirect is a high-performance, carrier-class modem engineered for mission-critical satellite communications. Designed primarily for government, defense, and high-capacity commercial applications, the MDM9000 delivers exceptional throughput, advanced waveform support, and industry-leading spectral efficiency.
At VSATplus, we provide the MDM9000 as part of our professional VSAT and satcom portfolio—offering not just the hardware, but also consultation, integration, and deployment support for complex satellite networks.
The MDM9000 is not a typical VSAT modem. It is designed for SCPC (Single Channel Per Carrier) environments, where performance, efficiency, and reliability matter more than cost per unit.
Key positioning:
Unlike entry-level modems, the MDM9000 focuses on maximizing bits per Hz, which is the real constraint in satellite communications.
It supports:
This combination puts it in the top tier of high-throughput satellite modems.

Satellite bandwidth is expensive. The MDM9000 is built to extract maximum value from every MHz.
Key technologies:
These features allow operators to:
The result: more data over the same satellite capacity.
One of the most important built-in technologies is FlexACM (Adaptive Coding and Modulation).
What it does:
Instead of dropping the link under bad conditions, the modem:
This significantly improves link availability and SLA performance.
The MDM9000 is built for data-heavy applications.
Performance benchmarks:
It also supports:
This makes it suitable for:
The modem operates in SCPC mode, which provides:
Deployment modes:
This flexibility allows it to be used across multiple network architectures.
The MDM9000 goes beyond RF—it’s also a network device.
Capabilities include:
It supports:
A unique differentiator: the modem includes intelligence gathering capabilities.
Features:
Combined with:
This makes it suitable for defense and intelligence operations.
Security is critical in government and defense networks.
The MDM9000 includes:
Reliability features:

| Parameter | Specification |
|---|---|
| Standards | DVB-S2, DVB-S2X |
| Modulation | QPSK to 256APSK |
| FEC | BCH / LDPC |
| MODCODs | 50+ combinations |
| Symbol Rate | 0.256 – 133 Msps |
| Parameter | Specification |
|---|---|
| Max Data Rate | 425 Mbps (simplex) |
| Max Data Rate | 850 Mbps (duplex) |
| TX Throughput | 300 Mbps |
| RX Throughput | 360 Mbps |
| Combined | 523 Mbps |
| Parameter | Specification |
|---|---|
| L-Band Frequency | 950 – 2150 MHz |
| IF Frequency | 50 – 180 MHz |
| Connectors | F-type / BNC |
| Max Input Power | -10 dBm |
| Feature | Specification |
|---|---|
| Interfaces | 10/100/1000 Ethernet |
| Protocols | IPv4, VLAN, MPLS |
| Encapsulation | GSE, MPE, ULE, XPE |
| Routing | Up to 100 routes |
| QoS | Advanced traffic shaping |
| Parameter | Specification |
|---|---|
| Form Factor | 1RU Rack Mount |
| Dimensions | 19” width, 51 cm depth |
| Weight | 5.8 kg |
| Power Supply | AC or DC |
| Operating Temp | 0°C to +50°C |
| Storage Temp | -40°C to +70°C |
Advanced modulation and optimization technologies reduce cost per bit.
Supports up to 850 Mbps duplex—ideal for heavy data workloads.
FlexACM and AUPC ensure continuous operation under adverse conditions.
Bandwidth cancellation and interference mitigation improve link quality.
Supports multiple architectures and integration scenarios.
Spectrum analyzer and constellation viewer reduce external tools.
Supports intelligence and secure communication applications.

The MDM9000 is not a plug-and-play consumer device. It requires:
At VSATplus, we provide:
We don’t just sell the modem—we help you build the network around it.

The MDM9000 Satellite Modem is a high-end, carrier-class solution designed for environments where performance, reliability, and efficiency are critical. With support for DVB-S2X, advanced modulation up to 256APSK, high throughput capabilities, and intelligent optimization technologies, it enables organizations to maximize satellite capacity while maintaining robust connectivity.
Whether deployed in defense networks, broadcast systems, or high-capacity backhaul links, the MDM9000 delivers the performance required for modern satellite communications.
For organizations looking to deploy mission-critical satellite infrastructure, VSATplus offers the MDM9000 with full technical support, integration expertise, and global delivery—ready to power your next-generation network.