Additional information

Product Series

Rf Direction

Remote Control

Local Control

Chassis Size

Storage Temperature

Operating Temperature

Relay Type


Product Status



Output Ports

Input Ports

Input/output Configuration

Matrix Type




The L-band Dual System is composed of two Full Duplex Transmitter (Tx) and Receiver (Rx) racks; operating from 900 to 2050 MHz. This L-band Teleport is unique such that the system has a single Master Control Module (located on the Rx rack), while the Tx rack is controlled via a Slave Control Module. Thus, when closing a path on the receiver side a matching path will also be closed on the transmitter end.

This sophisticated switching system is built by cascading (4) 12×12 Fan-Out and (4) 12×12 Fan-In Modules to create 12×48 configuration on the Rx rack respective 48×12 configuration on the Tx rack. On the Rx rack, all (4) 12×12 modules are routed to a Master Control Module and integrated to a 12×48 system, while on the Tx rack it goes to the Slave Control Module.

The system is fully controlled through Master Controller Module (from Rx rack) which is equipped with Windows 2000 Professional operating system (CPU), graphical LCD touch screen display and a removable hard disk. On the rear panel, 12×12 Modules Fan-out modules are interconnected using 9-pin CANbus D-connector.

The L-band system is also loaded with (4) Fiber Optic Modules; two for transmitting and two for receiving signals. In addition, each rack is equipped with a Power Supply module, a Signal Monitor panel, and a Signal Attenuation Control module. Furthermore, the Rx rack is populated with (6) L-band amplifiers.

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Dow-Key Microwave Corporation, the world's largest manufacturer of electromechanical RF Switches and Switching Systems, is part of the Microwave Products Group (MPG), which is a subsidiary of Dover Corporation. We specialize in Coaxial Switches, Waveguide Switches, Space Qualified Switches, Electromechanical Switch Matrices, Solid State Switch Matrices, Fiber Optic Switch Matrices, Programmable Delay Lines and much more. Specializing in RF Matrix, Switch Matrix, and RF Switches.

As a leader in RF technology, Dow-Key offers high performance waveguide switches operating up to 70 GHz, coaxial switches operating up to 40 GHz, Hi-Rel switches such as SPDT, transfer switch, T-Switch, various waveguide switches and switching blocks, and switching systems such as SATCOM modules, RF matrices with individual switches, non-blocking crossbar, fan-in and fan-out modules, hybrid switching solution and much more (electromechanical, solid state and fiber optics), in addition to, custom switching designs and reliable solutions, as it is required in today's fast paced communication industry. Our products are used in a wide range of different markets, from commercial, military and to space, with applications in ATE, avionics, ground based, satellite communications, broadcasting, Hi-Rel, and many more. We are specialized in RF technology and custom switching needs. Dow-Key Microwave is AS9100 / ISO-9001:2008 certified and is committed to provide unparalleled customer service, competitive pricing and on-time delivery. Founded in 1945, Dow-Key is the oldest continuously operational RF Relay manufacturer in the United States.

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