DOW-KEYS NEW COAXIAL MATRIX SWITCH OFFERS TOTAL INTEGRATION WITH ETHERNET NETWORKS

Ventura, California – March, 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 Reconfigurable CANBus-based Integrated Switch Matrix (P/N 13D12-480822T) equipped with a built-in Ethernet Port. This Switch Matrix is based on the well- established standard design of the SP12T switch with internal termination. Access to the termination port via SMA connectors provides an opportunity to utilize this switch as a redundancy solution by allowing insertion of one redundant unit into one of 12 main network lines. This dual use technology has been implemented with the focus on the wireless market needs, more specifically in the area of satellite ground stations and wireless networking solutions. The 13D12-480822T performs up to 18 GHz. This Ethernet (802.3) based switch matrix can be easily accessed from anywhere in the world via TCP/IP protocols on 1OBaseT networks. The switch can also be controlled using the CANBus interface. Characteristics include 22-26 VDC (24 VDC nominal operating current is 500 mA typical (a 20°C) operation. Equipped with a self cut-off latching actuator, this device switches in 60 ms (max). 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 50Q terminations installed on all termination ports,

Typical Specifications:

Frequency Range (GHz) DC-4 4-8 8-12 12-16 16-18
VSWR (Max.) 1.25:1 1.35:1 1.40:1 1.50:1 1.80:1
Insertion Loss (dB Max.) 0.20 0.30 0.40 0.60 0.80
Isolation (Db Min.) 70 65 60 60 55

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

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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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