Dow-key Space Switch Solution

Space – Switch Solutions

Our Experience

We have been a premier supplier of space qualified RF switches, coaxial and waveguide, since 1970. Dow-Key Microwave designs, fabricates and tests all integrated switch blocks assemblies and individual switches in our facility. Our switches have had an in-flight failure free record in over 100 different space programs using 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.


SPDT switchesDow-Key’s innovative and proven high reliability, superior RF performance, and low current/magnetic latchSPDT switcheshave played a part in hundreds of successful space missions since the 1970’s. Some of these missions include: GPS III (Global Positioning System), Atlas (launch vehicle), Pegasus (rocket), Milstar (satellite communication system), and Optus (leading operator of satellites in the Asia Pacific region).
transfer switchesOur rigorous quality assurance processes allowtransfer switchesto be used in critical programs such as Inmarsat-4 satellite system which supports Broadband and Global Area Network for delivering Internet and intranet content solutions (e.g. video, fax, email and LAN access). On other space missions like the ACE (Advanced Composition Explorer – an explorer mission) our lightweight (less than 55 grams) and highly reliable qualified transfer switches were a perfect fit.
T switchThe benefit of aT-switch在一个transfer switch is that up to three combinations of RF paths are available, which is perfectly suited for space applications where more than two path combinations (DPDT) are required. In addition to superior RF performance and lightweight/high power capabilities, Dow-Key distinguishes itself from others by introducing random drive (minimizing the switching time) rather than forcing the application to switch RF paths in sequential order. TheseRF switches已在包括MUOS(太空工艺),伊罗斯(印度空间计划)和INSAT-3(多用途卫星设计提供电信,电视广播,气象,搜索和救援服务)的方案中有资格。


In 1993 Dow-Key expended its involvement in Hi-Rel space programs with the acquisition of the Transco Space Qualified Products from Datron/Transco Systems in Southern California, including space programs dating back to 1968. In addition to inheriting many of the Hi-Rel (and commercial) waveguide switches, many of the veteran Transco design engineers stayed with Dow-Key and are still employed with us today. Thus, this unique combination of experience and innovation enhances our capabilities. Dow-Key can supply waveguide switches with or without windows, and also in C (DPDT) or R (4-Position) configuration.

Some of the design advantages of Dow-Key waveguide switches are:

  • Simple light weight design with very few parts
  • Low current actuator design with no moving parts
  • Simple magnetic latching. No mechanisms, springs or detents required
  • 执行器完全由RF波导部分密封

转变blockOver the years, Dow-Key’s outstanding Hi-Rel track record has generated interest in combining space qualified switches and other components such as power dividers in a block of switches, a.k.a.转变blocks, to achieve the matrix complexity needed in programs such as GPS-3, Kompsat-3 (satellite), Inmarsat-4, and other classified programs. Experience gained in over 150 years of combined knowledge and practice in design, test, and manufacturing of Hi-Rel products, makes Dow-Key a perfect investment for custom and complex switching needs.

For specific part numbers and RF refer to ourSpace Brochure.


We have an entire team of experts – from devoted sales and program managers, QA and procurement personnel to design, test, and manufacturing engineers – dedicated solely to space production that is supported by a well trained and certified group of technicians and production personnel. Our entire staff is fully dedicated to our customer base, with comprehensive focus on each project from the design phase all the way to final test and beyond.

Dow-Key Facility, Quality and Equipment

Dow-Key Microwave has heavily invested in technical staff and capital equipment to provide the right environment and tools for manufacturing products of the highest quality and reliability for use in manned and unmanned space vehicles.

Facility/Test Equipment

  • Two Class 7 Clean Rooms with humidity and temperature controlled environment
  • Prohibited materials and screening chamber
  • Three full time T-VAC test stations
  • RF Power and Multipaction stations
  • Vibration Room


  • AutoCAD.
  • SolidWorks
  • 基于(高频率uency Structural Simulator)
  • Cosmos FEA (validation and failure mode simulation)

Quality Certifications

  • Quality Management System (QMS) evolved from MIL-Q-9858A & MIL-I-45208
  • DOD classified certifications
  • AS9100和ISO-9001通过BSI管理系统认证
+ Learn More
Dow-Key Microwave Corporation, the world's largest manufacturer of electromechanicalRF开关Switching Systems, is part of the Microwave Products Group (MPG), which is a subsidiary of Dover Corporation. We specialize inCoaxial Switches,bobapp手机客户端下载 ,Space Qualified Switches,bobapp下载 ,Solid State Switch Matrices,光纤开关矩阵,Programmable Delay Lines和much more. Specializing inRF Matrix,Switch Matrix和rf开关。

As a leader in RF technology, Dow-Key offers high performance波导开关高达70 GHz,同轴开关,操作高达40 GHz,HI-REL开关,如SPDT,转移开关,T-Switch,各种波导开关和切换块,以及诸如SATCOM模块,RF矩阵等开关系统开关,非阻塞横杆,扇入和扇出模块,混合开关解决方案等等(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 operationalRF Relay manufacturer在美国。

搜索这个网站:rf switch, rf relay, SPDT switch, 1x2 switch, DPDT switch, transfer switch, SP3T switch, SP4T switch, SP5T switch, SP6T switch, SP7T switch, SP8T switch, SP9T switch, SP10T switch, SP12T switch, SP14T switch, SP3T coaxial switch, SP4T coaxial switch, SP5T coaxial switch, SP6T coaxial switch, SP7T coaxial switch, SP8T coaxial switch, SP9T coaxial switch, SP10T coaxial switch, SP12Tcoaxial switch, SP14T coaxial switch, 40 Ghz switch, coaxial relay, switch matrix, coaxial switch, coaxial relay, L-band matrix,L-band switch, VHF-band matrix, VHF-band switch, IF-band matrix, If-band switch, HF-band matrix, HF-band switch, C-band matrix, Ka-band matrix, Ku-band matrix, waveguide, waveguide switch, space switch, space relay, hi-rel switch,space waveguide, and much more.