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Satellite communication systems rely on seamless integration between indoor equipment and outdoor RF components to deliver reliable, high-performance connectivity. While Block Upconverters (BUCs), Low Noise Block converters (LNBs), and satellite modems receive most of the attention, one critical component often overlooked is the Bias Tee. This compact device plays a vital role by combining DC power, IF signals, and reference frequencies onto a single coaxial cable, simplifying installations and improving system reliability.
The AMKOM AMST-05N Indoor Bias Tee for BUC is engineered to provide an efficient and dependable solution for powering outdoor BUCs while simultaneously passing the L-Band Intermediate Frequency (IF) signal and a 10 MHz reference signal from the modem. Designed by Amkom Design Group, the AMST-05N features an ultra-compact aluminum enclosure, low insertion loss, excellent RF performance, and rugged construction, making it suitable for professional VSAT, broadcast, teleport, enterprise, and government satellite communication systems.
Available from VSATplus, the AMST-05N is an excellent choice for integrators and network operators looking for a reliable indoor Bias Tee that simplifies installation while maintaining signal integrity.
A Bias Tee is a passive RF device used to inject DC power onto an RF transmission line while allowing RF signals to pass with minimal loss. In satellite communication systems, it enables a single coaxial cable to carry:
This eliminates the need for separate power cables, reducing installation complexity and improving overall system reliability.
The AMST-05N is specifically designed for indoor installation and supports professional satellite uplink systems requiring efficient DC and RF signal distribution.
Today’s VSAT and satellite communication systems demand components that are compact, durable, and easy to integrate. The AMST-05N meets these requirements with a rugged aluminum enclosure that occupies very little space while delivering reliable long-term performance.
The device is suitable for installation in:
Its robust mechanical design allows it to withstand demanding operational environments while maintaining excellent electrical performance.
The AMKOM AMST-05N offers a range of practical features that simplify satellite communication installations.
These characteristics make the AMST-05N ideal for professional satellite communication systems where reliability and signal quality are essential.
One of the most impressive aspects of the AMST-05N is its extremely compact size.
Dimensions:
36 × 30 × 17.5 mm
(excluding connectors)
The enclosure is manufactured from Aluminum 6082, providing excellent durability while keeping the overall weight low. Its small footprint allows easy installation inside communication racks, satellite modem cabinets, or equipment shelters without occupying valuable space.
Unlike simple DC injectors, the AMST-05N simultaneously passes multiple signals over the same coaxial cable.
Supported signals include:
This allows satellite modems to communicate efficiently with outdoor BUCs using a single coaxial connection, simplifying cable management and reducing installation costs.
The AMST-05N supports an IF frequency range of:
950 MHz to 2150 MHz
This frequency coverage ensures compatibility with virtually all modern satellite modems and VSAT systems operating within the standard L-Band frequency range.
The Bias Tee is capable of supplying DC power directly to the outdoor BUC through the IF cable.
Specifications include:
This wide voltage range allows compatibility with numerous BUC models from different manufacturers while providing sufficient current capacity for higher-power outdoor RF equipment.
Maintaining RF signal quality is critical in satellite communication systems.
The AMST-05N minimizes signal degradation with:
These exceptionally low insertion losses ensure that transmitted and received signals retain their integrity, contributing to improved overall link performance.
The Bias Tee also provides excellent impedance matching.
Maximum VSWR:
1.5 : 1
A low VSWR minimizes reflections on the RF transmission line, helping maintain stable communication links and maximizing RF efficiency.
The AMST-05N utilizes professional-grade:
These connectors are widely used in commercial and military satellite communication systems because of their excellent RF performance and durability.
The documentation specifies:
ensuring compatibility with standard L-Band satellite equipment.
The AMST-05N has been designed to operate in demanding environmental conditions.
Operating Temperature:
−60°C to +85°C
Such an extensive temperature range allows installation in environments ranging from Arctic climates to hot desert regions without compromising performance.
| Specification | Details |
|---|---|
| Product | AMKOM AMST-05N Indoor Bias Tee |
| Application | Indoor Bias Tee for BUC |
| IF Frequency | 950–2150 MHz |
| IF Signal | L-Band Pass-through |
| Reference | 10 MHz Pass-through |
| DC Input | 12–60 VDC |
| Maximum Current | 5 A |
| VSWR | 1.5:1 Max |
| IF Insertion Loss | 0.3 dB Max |
| 10 MHz Loss | 0.3 dB Max |
| Connectors | N-Type / N-Type |
| Operating Temperature | -60°C to +85°C |
| Construction | Aluminum 6082 |
| Dimensions | 36 × 30 × 17.5 mm |
| Mounting | Compact & Mountable |
| Compliance | RoHS |
| Warranty | 3 Years |
Although the AMST-05N is a small passive device, it performs an essential function in professional satellite communication systems. By combining DC power, IF signals, and a 10 MHz reference over a single coaxial cable, it simplifies system architecture and reduces installation costs.
The AMST-05N is ideal for:
Its compatibility with standard L-Band satellite equipment makes it suitable for nearly any professional SATCOM installation requiring indoor DC injection for outdoor BUCs.
Selecting the right Bias Tee can significantly improve the overall reliability and efficiency of a satellite communication system. The AMST-05N offers several advantages that make it an excellent choice for system integrators and network operators.
The ability to transmit IF, DC power, and the 10 MHz reference over a single coaxial cable eliminates unnecessary wiring, reducing installation time and minimizing cable management complexity.
Measuring just 36 × 30 × 17.5 mm, the AMST-05N can easily fit into crowded equipment racks and communication cabinets where space is at a premium.
With insertion loss limited to only 0.3 dB for both the IF and reference signals, the Bias Tee preserves signal integrity, helping maintain reliable satellite links with minimal attenuation.
Supporting 12 to 60 VDC with up to 5 A of current, the AMST-05N provides sufficient power for a wide variety of outdoor BUCs without requiring additional power infrastructure.
Its rugged aluminum enclosure, RoHS compliance, and 3-year manufacturer warranty ensure dependable operation even in demanding professional environments.
System installers appreciate products that reduce installation complexity while improving long-term serviceability. The AMST-05N delivers several installation benefits:
These features make the AMST-05N particularly attractive for both new satellite deployments and system upgrades.
According to the product documentation, the enclosure is manufactured from Aluminum 6082, providing excellent mechanical strength while maintaining a lightweight form factor. The engineering drawings also specify:
This robust construction helps protect the internal circuitry while ensuring long service life in professional installations.
Every RF component inserted into a satellite communication chain introduces some degree of signal loss. Excessive insertion loss can reduce link performance, forcing operators to compensate with higher transmit power or more sensitive receiving equipment.
The AMST-05N minimizes this issue with:
These low values help maintain signal quality between the indoor modem and the outdoor BUC, contributing to stable and efficient satellite communications.
When purchasing satellite communication equipment, choosing an experienced supplier is just as important as selecting the right hardware.
At VSATplus, we supply genuine AMKOM products to customers worldwide, supported by experienced satellite communication professionals who understand the technical requirements of modern VSAT and SATCOM networks.
When ordering from VSATplus, customers benefit from:
Whether you are deploying a single VSAT terminal or building a large satellite communication network, VSATplus can help you source the right RF components for your project.
Several characteristics distinguish the AMST-05N from conventional indoor Bias Tees:
These features make it an excellent choice for mission-critical satellite communication systems where reliability and performance are essential.
The AMKOM AMST-05N Indoor Bias Tee for BUC is a compact yet essential component for modern satellite communication systems. Designed to simplify installations by combining DC power, L-Band IF signals, and a 10 MHz reference over a single coaxial cable, it offers excellent electrical performance, minimal signal loss, and exceptional reliability.
Its rugged aluminum construction, wide operating temperature range, low insertion loss, and professional RF connectors make it suitable for enterprise VSAT networks, teleports, broadcast facilities, maritime communications, government systems, and other demanding SATCOM applications.
Available through VSATplus, the AMST-05N provides satellite operators and system integrators with a dependable, space-saving solution backed by expert technical support and worldwide delivery. Whether you’re building a new satellite communication network or upgrading an existing installation, the AMST-05N is a practical and reliable choice for ensuring efficient power and signal distribution between indoor and outdoor equipment.
