Secure Communications System SCS 3.0 Compact Digital

A secure modular aircraft audio management and communication system that features scalable integration of multilevel secure voice/data/video communications. An advanced modular communications solution for the information-based, net-centric battlespace.

Dependable Technology

  • Reduced size, weight and power
  • Simultaneous clear and secure operation
  • Digital voice, data and video management
    Multilevel secure Voice over Internet Protocol (VoIP)
    Complete management of communication assets and user configurations
    Easy customization due to modern modular design
    Radio and crypto relay
    Intercom conferencing
    Wideband audio (optional)
    Binaural audio (spatial optional)
    Redundancy and emergency operations
    Extensive BIT capabilities
    Radio-priority configurable for each position
    Conduction-cooled sealed enclosures

Compatibility and Interfaces
Standard interfaces: MIL-STD-1553 and Ethernet
Compatible with all standard headsets and microphones
NVIS compatible and daylight readable
Certified Tough & Secure
DO-178B and DO-254 certifiable

Notable Platform Installations
C-130J Block 8.1 including variants AC, EC & MC


The Palomar SCS 3.0 Secure Digital Communication System and aircraft audio management system features an advanced set of modular building blocks that meet the most stringent military requirements of 21st-century information-based warfare. The solution’s native scalability supports integration of communication systems for a wide range of platforms, from compact aircraft to large secure ISR aircraft, to sizable multilevel secure, battle-ready tactical installations. Palomar has combined its proven expertise and core technologies in TDM switching, IP and TEMPEST with standards based and COTS architectures in a modern, highly flexible and upgradable design for today’s multi-mission platforms and deployments. Our systems have unmatched flexibility, from automated multiband relay of voice/data/video to radio, crypto, modem and sensor control to dynamic, multilevel secure communications management. This flexibility makes mission reconfigurations more efficient through a user-friendly configuration manager, reducing typical modification costs and timelines. An uncompromising combination of reliability, modularity, upgradability and interoperability makes the Palomar SCS 3.0 Secure Digital Audio Management and Communication System the solution of choice for all multi-mission platforms in the 21st century.

System Architecture

Documents Downloads

Palomar_3.0-Compact-Digital Brochure

PALOMAR Secure Communications Systems Overview

Performance Characteristics

Radio receive levels
Software selectable 0.1 Vrms to 15.8 Vrms and 150 Ω,
600 Ω, and >4K Ω

Radio transmit levels
Software selectable from 0.1 Vrms to 2.0 Vrms

Microphone inputs
Low-level dynamic, high-level amplified

Headphone outputs
Binaural and monaural, standard and ANR high level
(300 Ω cups) and low level
(19 Ω cups)

Frequency response
Up to 20 Hz – 20 KHz

Speech intelligibility
91 percent at peak noise

Crosstalk isolation
Red/black separation greater than 100 dB at 1 KHz

Audio and data latency
Audio: <3 milliseconds
Data: Ethernet QoS settings and load dependent

Audio quality
Distortion <3 percent, idle channel noise -56 dBr

Programmable luminosity curves

28 V per MIL-STD-704

Designed to RTCA/DO-160F, MIL-STD-810G

MIL-STD-461F and RTCA /
DO-160F, MIL-STD-464 and
RTCA / DO-160F

NSTISSAM 1-92 Level 1

Software design assurance
RTCA/DO-178B Level C

Hardware design assurance
RTCA/DO-254 Level C

Operation standards

Quality assurance and best practices
SAE AS9100, ISO 9001 and AS9115

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Palomar Secure Communications