Ventura California – November, 2001 — Dow-Key Microwave (a subsidiary of Dover Corp., NYSE:DOV), is an ISO 9001 Certified manufacturer of Electro-mechanical Coaxial and Waveguide switches, Switch Matrices, Integrated Modular Assemblies, and related Passive components. Dow-Key’s Micro Miniature Bypass Switch (P/N 411FL-2308-1) performs from DC to 3 GHz with upgrade capability to 18 GHz. DC characteristics include 22-32 VDC (28 VDC nominal operating current is 250 mA typical @ 20ºC) operation. Equipped with a failsafe actuator, this switch has an operating speed of 15 ms (max).

This very reliable and extremely small bypass switch targets the wireless market. One ideal application is to bypass an LNA (Low Noise Amplifier). The switch allows removal of the LNA from the critical path in case of LNA failure or required maintenance.


Frequency Range(GHz) DC-1 1-2 2-3
VSWR (max.) 1.10:1 1.15:1 1.20:1
Insertion Loss(max.) 0.05 dB 0.10 dB 0.15 dB
Isolation (Min.) 80 dB 80 dB 80 dB
RF Power, WCW 50 35 25

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, Integrated Modular Switch Assemblies. For more information, call the Dow-Key Sales Department at (805) 650-0260 or visit our web site at https://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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