Spectra Aerospace & Defense is a trusted and growing platform of C5ISR companies – CALCULEX, Galleon Embedded Computing, and ArgonFDS - bringing over a half-century of rugged, mission-ready, battle-tested experience to bear in aerospace and defense applications. From high-speed data acquisition, data recording and secure, high-density storage, to computing and rugged, clear display of mission data, Spectra delivers the products and subsystems needed for the most demanding military air, land, and sea platforms. With our comprehensive portfolio of rugged products, systems, and solutions, the Spectra family of companies’ customized end-to-end solutions for the C5ISR market help military end-users achieve mission success. Simply put, Spectra's rugged solutions Capture, Process, and Display your mission-critical data in the harshest environmental conditions. In the air, at sea, on land, and in space; We simplify integration.


Data Acquisition

Sensor Recording


Mission Computing

Encrypted Storage

NAS & File Serving

Processing & Routing






Product Brands

Setting the Industry Standard for Over 30 Years

For over 30 years, CALCULEX has been a leading provider of cutting-edge data recording systems that have set the industry standard. Our product families include RIPR, SPIDR, MONSSTR, RAPTOR, and ARMOR, each designed for specific recording needs. From high-performance and smart choices for any application, to low-cost, multi-channel recording for data-intensive industries, our systems offer reliability and convenience. Our MONSSTR recorders overcome the limitations of magnetic recording technology, while the RAPTOR sets a new standard in high-speed data capture. With various I/O configurations and compliance with industry standards, our recorders are an ideal choice for any commercial or military data acquisition and processing need. Explore each product brand below.