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 Families

Revolutionized Defense & Aerospace Rugged Computing Technology. Explore the RIPR, RAPTOR, SPIDR, MONSSTR, and ARMOR Product Brands

CALCULEX is a reputable name in the defense industry, renowned for its exceptional high-performance flight data recorders. With years of experience in real-time, high-speed data acquisition, processing, routing, and data recording, CALCULEX has cemented itself as a leader in the development and supply of cutting-edge technology. The CALCULEX product family comprises four distinct brands, namely RIPR, RAPTOR, SPIDR, MONSSTR, and ARMOR. Each product family possesses a rugged and durable build, designed to withstand harsh environmental conditions.








MONSSTR  Recorders

Modular Non-volatile Solid State Recorder

CALCULEX offers a cutting-edge brand line of recorders known as MONSSTR, which are specifically designed to overcome the limitations of magnetic recording technology. The harsh environments that are often encountered in military and aerospace programs prohibit the use of magnetic tapes or disks for instrumentation data recording. Additionally, the increasing demand for higher data recording rates is difficult to achieve with conventional magnetic recording technology. Therefore, MONSSTR recorders are designed to utilize high-density, non-volatile flash memory in an innovative system architecture, enclosed in modular rugged packaging.

The MONSSTR recorders feature sustained data rates of up to one gigabit per second, storage capacities of up to 274.7 gigabytes, and a wealth of features that are uniquely possible with solid-state, random-access devices. These recorders are the most suitable solution to meet the stringent requirements of the next generation of instrumentation data recorders.

The minimum configuration of a MONSSTR recorder consists of an enclosure with a power module, one controller, and one memory canister. Additionally, an optional second controller may be included to provide full dual-recorder operation. The data multiplexer that is compliant with either the CALCULEX ARMOR system or IRIG 106 Chapter 10 may be installed in the secondary controller slot to combine multiple analog and digital data channels into a single composite data stream for input to the primary controller. Furthermore, MONSSTR recorders have power modules that are available for use with AC or DC power sources, including standard power modules for ruggedized units, which are 115VAC/400Hz, 28VDC, and 270VDC.

The storage capacity of MONSSTR recorders is remarkably impressive, with model 6000 memory canisters capable of holding up to 274.7 gigabytes, while model 5000 recorders can store up to 90.1 gigabytes of non-removable memory. Additionally, the data rates of MONSSTR recorders are exceptional, with model 6000 internal busses capable of sustained data rates of up to 128 megabytes per second and model 5000 busses capable of sustained data rates of up to 64 megabytes per second.

MONSSTR I/O controller design is elegantly organized into three “layers” of internal hardware and firmware: a physical layer, a logical layer, and a virtual layer. The physical layer performs basic memory read and write operations, while the logical layer performs error detection and correction operations and memory management. The virtual layer defines the “personality” of the controller for the user equipment interface. All MONSSTR I/O controllers are identical at the physical and logical layers.

CALCULEX offers a variety of MONSSTR I/O controllers featuring different virtual layer firmware and hardware to accommodate a variety of user equipment data communication protocols. The CSR-6121 and -5121 controllers feature a generic parallel I/O user equipment interface with maximum data transfer rates equal to that of the internal system bus, while the CSR-6123 and -5123 controllers emulate the Ampex DCRsi tape recorder. Additionally, the CSR-6124 and -5124 controllers feature ANSI Standard Fibre Channel fiber optic interfaces. MONSSTR recorders are designed to accommodate higher memory densities as they become available.



SPIDR Recorders

Scalable Performance Instrumentation Data Recorder

SPIDR (Scalable Performance Instrumentation Data Recorder) is a brand line of data recording systems offered by CALCULEX. These systems are designed to deliver high-performance, application-specific data recording at a lower cost than traditional analog and digital cassette recorders.

One of the key features of SPIDR systems is their multi-channel recording capability. They can handle varying data formats at user-configurable speeds, providing a flexible solution for a wide range of recording applications. In addition, SPIDR systems can be customized to support the optimum recording media for any given application. They can integrate a variety of commercially available I/O devices such as tape recorders, disk drives, CD-ROM and RWCD-ROM, and solid-state devices.

SPIDR systems are built to handle high-speed parallel data capture as required, thanks to their ability to support a virtually limitless aggregate data rate. They support multiple IRIG 106, Chapter 10 channels to record data from multiple data input channels using standard IRIG-106, Chapter 10 format. PCM input channels are frame-synchronized, variable-length words are unpacked and aligned on 16-bit-word boundaries to simplify subsequent processing.

SPIDR systems also support configurable I/O channels. To create optimal configurations, they can accommodate CALCULEX PCI bus telemetry I/O modules and third-party modules, such as multi-channel bit-syncs and serial I/O modules. This level of customization allows users to tailor the system to their specific application needs.

Furthermore, SPIDR systems support software decommutation and raw data reconstruction, making them highly flexible for data analysis and processing. They can output recorded data in its original format with excellent phase coherence between channels. SPIDR systems are also easy to operate both locally and remotely, thanks to their large touch screens with self-explanatory buttons and support for serial links including Ethernet, IEEE-488, and RS-232. The help screens provide on-line documentation, and built-in hardware and software tests simplify the diagnosis of system problems.

Overall, SPIDR systems offer low cost, high-performance, and application-specific recording for a wide range of data-intensive applications. Their multi-channel recording capability, support for configurable I/O channels, and software decommutation and data reconstruction make them an ideal choice for data recording needs across various industries.



RIPR Recorders

Recorder Integrated Processor and Router

The RIPR brand line of recorders offered by CALCULEX includes three models – the RIPR Model 1201/1401, the RIPR 2600L, and the RIPR Model 2300. These recorders are designed for use in a variety of applications, from unmanned systems and commercial aircraft to military aircraft and flight test operations.

The RIPR Model 1201/1401 is a small, rugged, multi-channel recorder that features the industry standard CFast 3.0 removable memory, an open standard IRIG 106 Chapter 10 Packet Data Recording Format, and compliance with IRIG 106 Chapter 4, 6, 7, 8, 9, 10, and 11. This model allows for input power from 5VDC, 28VDC, or 270VDC and includes command control options such as Ethernet/COAP, serial communication, and discrete time sync options such as IRIG B AM/DC, MIL-STD-15531, IEEE-1558, and GPS.

The RIPR 2600L is a 19-inch rackmount multi-purpose recorder/router/reproducer designed for laboratory or control room environments. Offering a wide array of I/O channels and local and/or remote data storage and retrieval media, the 2600L complies with applicable sections of IRIG Standard 106 Chapters 4, 6, 7, 8, 9, 10, and 11. Its aggregate media data rate can reach up to 1600MB/Sec, and its users can access Analog and Digital High Definition Video with Audio recording, MIL-STD-1553 and 16PP194, PCM/UART/PULSE to 30Mbps, 10/100/1000 and 10G Ethernet, Fibre Channel 1G/2G/4G, ARINC 429 and 708, as well as command and control options such as Ethernet, serial COMM, MIL-STD-1553, and discrete.

Lastly, the RIPR Model 2300 deploys a compact, rugged, multi-channel recorder/processor that allows for up to two Terabytes of storage when equipped with removable FlashCache memory modules. As a brand that co-authored the USAF of IRIG Standard 106 Chapters 6, 10, and 11, CALCULEX data recordings comply with the applicable sections of these Chapters and Chapters 4, 7, 8, and 9 of the Standard. Its aggregate media data rate can reach up to 25MB/Sec or 125MB/Sec, with available card types including 4 Ch SD Video with Audio, 4 Ch HR Video with Audio, 8 Ch PCM/UART/PULSE, 8 Ch MIL-STD-1553, 32 Ch ARINC 429, and 3 Ch 10/100/1000 Ethernet. Command and controller I/O options include various discrete, serial UART ports, MIL-STD-1553, and Ethernet communication.

Overall, the RIPR brand line of recorders offered by CALCULEX provides smart choices for any commercial or military data acquisition and processing application. With multiple configurations, various I/O module sets for each specific mission, and compliance with industry standards, these recorders offer reliability, convenience, and high-performance capabilities that can benefit a wide range of applications.



RAPTOR Recorders

Rapid Telemetry Optical Recorder

The CALCULEX RAPTOR is the ultimate solution for high-speed data acquisition, processing, and recording in military platforms. The RAPTOR sets a new standard in high-speed data capture with its advanced fiber optic 24-channel input data rates that support 2 Gbps, 10 Gbps, and 25 Gbps per channel. Its ultra-high density Removable Memory Module (RMM) storage offers 132 TB capacity, which is expandable up to 640 TB, making it the largest data storage capacity of any rugged recording device on the market.

Designed in compliance with the IRIG 106 standard, RAPTOR provides adherence to open architecture time-synchronization practices for precision data recording across multiple data sources. The RAPTOR is platform agnostic/adaptable through Telemetry Attributes Transfer Standard (TMATS) configuration files, making it an ideal solution for capturing, processing, and storing vast amounts of critical data. With its superior data storage capacity, real-time data acquisition, and open standard compliance, the RAPTOR is widely used in various applications, including Electronic Warfare, Command and Control, and Integrated Sensor System Capture. The RAPTOR offers enhanced situational awareness with its long-duration recording capabilities, making it the ultimate solution for extreme environments.