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Dow-Key Microwave

Company Profile

Dow-Key Microwave 150x72

Contact Information

Contact: Sara Nazemzadeh
Title: Product Sales Mgr.
Phone: 805.256.5594


Dow-Key Microwave
4822 McGrath Street
Ventura CA 93003
United States
Dow-Key Microwave Corporation, part of Microwave Products Group and a subsidiary of Dover Corporation, is a worldwide leader in electromechanical switches since 1945. We manufacture, as well as custom design, switches and switching systems for the Commercial, Military, and Space industries. Dow-Key Microwave specializes in broadband RF coaxial switches from DC to 40 GHz and waveguide switches operating from DC to 70 GHz, electromechanical and solid state switch matrices, fiber optic switch systems, in addition to programmable attenuators and delay lines.


Range of DPDT – Transfer Switches: 411HQ Series

June 11, 2015

411HQ SeriesThe 411HQ Series from Dow-Key Microwave is a range of DPDT (transfer) switches that operate from DC to 27 GHz. They have been developed for use in critical programs such as Inmarsat-4 satellite system and intranet content solutions (video, fax, email, LAN access) applications. These switches have an insertion loss up to 0.45 dB, an isolation of 65 dB and a VSWR of 1.45:1.  They can handle up to 2 W of CW power and weigh only 55 g.

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High Power T-Switch: 511H-Series

July 31, 2014

511H-Series high power T-switchDow-Key Microwave Corp. presents its 511H-Series high power T-switch which has been qualified and supplied to various domestic and international space programs for both military and commercial use.  The 511H-Series design is offered with 1.5 kW peak power at UHF, 300 W peak power both at L-Band and S-Band, and 200 W peak power at C-Band.

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Low PIM Coaxial Switches with N-Type Connectors

January 31, 2013


This series of low PIM switches is now available with N-type connectors (in addition to SMA connectors). SPDT, DPDT and SP6T with SMA or N-type connectors are available, which are specifically designed and guaranteed to meet 3rd order IM requirements below -160 dBc; at 1870 MHz and at approximately +43 dBm with carrier frequencies 1930 MHz and 1990 MHz.

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Dow-Key launches new product line

November 02, 2015

Dow-Key Microwave announces the release of its new product series called Reliant Switch™, with a SPDT being the first RF switch in this series made available to the RF & test industry.

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Dow-Key's new switch product line, Reliant Switches, on display at EuMW

August 18, 2015

Dow-Key Microwave is launching a new RF/microwave switch product line for the ATE market with 10 million life cycles and 0.03 dB insertion loss repeatability; starting with SPDT switches. In the aerospace section, Dow-Key is introducing their latest C-switch; lightweight and with low insertion loss.

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Dow-Key Microwave Corp. exhibiting at IMS2015

May 04, 2015

Dow-Key® Microwave Corp. the world’s largest manufacturer of electromechanical switches, announced that it will be exhibiting at the IMS2015, Booth 123, Phoenix, Ariz. on May 19-21 at the Phoenix Convention Center.

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Dow-Key to showcase its space qualified 411HQ switch at IMS2015

April 22, 2015

Dow-Key® Microwave Corp., the world’s largest manufacturer of electromechanical switches, will be showcasing its space qualified 411HQ switch at IEEE MTT-S 2015 Conference & Exhibition, in Phoenix, Ariz., May 17-22 at Booth 123.

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Dow-Key Microwave Corp. exhibiting at the 2015 NAB Show in Las Vegas

March 27, 2015

Dow-Key® Microwave Corp., the world’s largest manufacturer of electromechanical switches, announced that it will be exhibiting at the 2015 NAB Show, booth SU6324, in Las Vegas, Nev. on April 13-16 at the Las Vegas Convention Center.

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Dow-Key Microwave to showcase switches at SATELLITE 2015

March 11, 2015

Dow-Key® Microwave Corp., the world’s largest manufacturer of electromechanical switches, announced that it will showcase its 411HQ, 461H and 511H series of switches at the SATELLITE 2015 Exhibition, booth 7112, in Washington DC on March 17-19 at the Walter E. Washington Convention Center.

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Dow-Key® Microwave Corp. will be exhibiting at IMS 2014

June 02, 2014

Dow-Key® Microwave Corp. will be displaying its Ka Brand switches and next generation matrices at the 2014 International Microwave Symposium Exhibition (IMS 2014) in booth 1405 on June 3-5 at the Tampa Convention Center in Tampa, FL. The IMS 2014 Expo will be the center of Microwave Week, June 1-6.

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Switch Matrix Catalog - Switch Solutions

Dow-Key has vast experience in designing and manufacturing matrix solutions with excellent performance. We are experts in custom designs - from small 1RU design to full integrated 19" rack solutions - and we offer many different types of COTS (commercial off-the-shelf) switch solutions starting with 1U up to 4U design.


Switch Product Catalog

Dow-Key has an extensive coaxial and waveguide portfolio with switches operating up to 40 GHz for coaxial switches and up to 70 GHz for waveguide switches, along with miniature switches, programmable delay line and attenuators, and with the latest addition of Low PIM switches for PIM sensitive applications. 


Next Generation Matrix Platform Brochure

The next generation platform is engineered around a flexible and efficient modular system architecture comprised of a series of brackets, panels and electronic-boards that are universal among all Dow-Key electromechanical models. Commercial-Off- The-Shelf (COTS) solutions are not only cost effective, but can also easily be re-configured by adding RF switches to a single enclosure – from simple to complex combinations. This new platform is easily field upgradable and repairable.


Space Product Brochure

Dow-Key has been a premier supplier of space qualified coaxial and waveguide switches since 1970. We design, fabricate and test all integrated switch blocks assemblies and individual switches in house and have had an in-flight failure free record in over 100 different space programs using over 150 different product designs. With decades of experience and knowledge, we are confident in providing high reliability solutions which can withstand the severe environments that space imposes on complex systems.


Guide to Selecting a Coaxial Switch

This tutorial will guide the user in selecting the right switch configuration for one's application by identifying critical switch parameters and characteristics. It further introduces the user to all available options offered with a coaxial switch.


Creating Your Own RF Switching System

This application note introduces an alternative way of meeting switching needs by showing how to design your own RF switch solution using CANBus switches together with a controller kit.


A Guide to RF Switching Systems Requirements

Whether you are designing an RF switching system or planning to purchase one, it is important to understand the fundamentals of these complex systems and the ways in which application requirements impact cost and performance. This paper will explain the requirements placed on switching systems and the tradeoffs that different choices presents.


Switch Solutions for Systems with Low PIM Requirements

This paper focuses on defining Passive Intermodulation and the concerns around PIM. It also discusses the cause of PIM in both general terms and in switches, in addition to, providing a solution for systems with low PIM requirements.


Targeting PIM Testing

Bandpass/bandstop (BP/BS) and lowpass/highpass (LP/HP) diplexers meeting rigid Passive Intermodulation (PIM) specifications are the essential building blocks of innovative testing system architectures. By integrating these filters with Dow-Key's switch matrices, an OEM can construct a single automated test system capable of covering a variety of frequency bands. Test systems of this kind can be further expanded to accommodate injection of interfering signals, monitoring ports and other customer requirements.


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