SPACE QUALIFIED HIGH POWER T SWITCH

Ventura, California – September, 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. Its newest product is the High Power T Switch. This space-qualified unit (511H-730322) offers a perfect solution for S-Band and C-Band redundancy systems.

Maximum weight of this High Power T Switch is 195 grams. DC characteristics include 32-43 VDC (42 VDC nominal) operating voltage and 510 mA (max) operating current @ 43 VDC and 20ºC. Equipped with a random latching actuator, this device switches in less than 25 ms.

>With a focus on S—Band applications, this space-qualified unit tested successfully for multipaction free operation up to 270 W Peak Power at 1.9 GHz. The average power test was conducted at 4 GHz with a 140 W power level. Both tests were performed with the RF power transmitted through both closed paths.

Specifications:

Frequency Range (GHz) DC-4 GHz 4-4.8
VSWR (Max.) 1.20:1 1.25:1
Insertion Loss (dB Max.) 0.15 0.20
Isolation (dB Min.) 65 60

Dow-Key”s product line of switches range from single-pole single-throw to single-pole 14-throw as well as Transfer, Inline, Waveguide, Switch Matrices, and Integrated Modular Switch Assemblies. For more information, call the Dow-Key Sales Department at (805) 650-0260 or visit our web site at http:/www.dowkey.com.

For more information, call the DowKey Sales Department at (805) 650-0260 or visit our web site at http://www.dowkey.com.

Enabling Communication and Signal Control

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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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