Ventura, California – July, 2002

Dow-Key Microwave (a subsidiary of Dover Corp., NYSE: DOV), is an ISO 9001 certified manufacturer of electromechanical coaxial and waveguide switches, Switch Matrices, Integrated Modular Assemblies, and related passive components.

Dow-Key Microwave (a subsidiary of Dover Corp., NYSE:DOV), is an ISO 9001 certified manufacturer of electromechanical coaxial and waveguide switches, Switch Matrices, Integrated Modular Assemblies, and related passive components. Its most recent family of switch matrices consists of CANBus-based Integrated Switch Matrices P/N 9D8-420822T and P/N 13D12-4808221. Both are equipped with built-in Ethernet control.

termination, dramatically increasing the power handling of these units. Access to the termination ports via SMA connectors make these switch matrices suitable as building blocks for redundancy solutions, especially when insertion of multiple redundant units into any of the 8 or 12 main network lines is required. This new dual-use technology is implemented with a focus on the wireless market, specifically in satellite ground stations and wireless networking solutions.

The 13D12- 480822T performs up to 18 GHz; the 9D8-420822T performs up to 26 GHz. These Ethernet (802.3) based switch matrices can be easily accessed from anywhere in the world via TCP/IP protocols on 10BaseT networks. The switches can be also controlled using the CANBus interface. Each unit is supplied with the contact-less indicator circuitry monitoring the movement of the RF contact actuators using photo-sensors. Available options include external 2WCW 50W terminations installed on all termination ports.


Typical RF Performance (9D8):

Frequency Range (GHz) DC —4 4-8 8-12 12-22 22-26
VSWR (Max.) 1.15:1 1.35:1 1.4:1 1.8:1 2.0:1
Insertion Loss (dB Max.) 0.2 0.3 0.4 0.80 1.20
Isolation (dB Min.) 80 80 75 55 50
RF Power, WCW 100 70 60 30 15

For more information, call the DowKey Sales Department at (805) 650-0260 or visit our web site at

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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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