Multi-Signal RF Cable Assemblies

When performance depends on more than one signal type, ConductRF delivers engineered multi-signal cable assemblies that combine RF, high speed data, power, and optional fiber into a single rugged connector system (D38999, VITA67, subminiature, and more). These integrated cabling solutions are built for high-reliability defense, aerospace, telecommunications, and industrial platforms where dense interconnects, environmental resilience, and signal integrity are non-negotiable.

Unlike our Flexible, Hand-formable, Semi-flexible, Semi-rigid, and Ruggedized solutions, multi-signal assemblies are not composable through Maestro. Each one is made to order, built around your exact requirements, and quoted directly through our engineering team.

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At a Glance – ConductRF Multi-Signal Cable Assembly Solutions

• D38999 Multi-Signal Cable Assemblies (Circular Connectors): Combine RF, fiber, data, and power in one MIL-DTL-38999 shell for rugged field and aerospace deployments.
• VITA 67 RF Coaxial Cable Assemblies (Connector Blocks): Modular, SOSA™-compliant connector block systems supporting SMPM, SMPS, and NanoRF contacts for avionics, radar, and modular communications.
• Custom Multi-Signal Harnesses: Tailored cable harnesses for data acquisition, test systems, and industrial integration, including DB25 and hybrid RF/control lines.

D38999 Multi-Signal Cable Assemblies (Circular Connectors)

The MIL-DTL-38999 family of circular connectors has been the backbone of rugged, multi-signal interconnect technology for decades, and ConductRF continues to advance our D38999 design engineering, manufacturing, and testing capabilities for today’s most advanced platforms. By integrating coaxial RF contacts, high-speed data pairs, fiber optic channels, and low- to mid-power lines into a single shell, these assemblies condense complex wiring into one quick-action, field-deployable connector.

These solutions are offered in single strand (for customer integration into shells) or multi-strand configurations (turnkey D38999 circular connector solutions).

D38999 Circular Shell and Contact Options:

• Series I, II, and III shells across 9+ sizes
• Insert arrangements to combine RF, power, data, and optional fiber
• Coax contact sizes #8, #12, #16 (SMPM, SMPS, BMA, M39029)
• Wide range of backshells: straight, angled, clamp, crimp
• Plating finishes: cadmium, nickel, black zinc, or specialty options for EMI and corrosion resistance

D38999 Cable Options

• RF coax: flexible RG styles, low-loss replacements, semi-rigid, hand-formable, semi-flexible
• High-speed data: Cat5e, Cat6a, Cat7, twinax/quadrax
• Fiber: single-mode, multi-mode, expanded beam
• Power & signal: low- and mid-power harnessing

D38999 Ruggedization Options

• Overmolded strain relief for sealing and impact protection
• Armored cables with stainless-steel braid or conduit for crush resistance
• Environmental sealing with IP-rated backshells and gaskets
• Abrasion-resistant jackets (polyurethane, woven-braid) for handling durability
• LSZH jackets for shipboard/enclosed environments
• High-temperature builds rated -65 °C to +200 °C

For compatibility, D38999 coaxial solutions from ConductRF are available with three standard contact sizes (#8, #12, #16). ConductRF also ensures optimal performance and dependability by matching materials and plating options across connectors, backshells, and cables—an often-overlooked detail that ensures long-term reliability.

D38999 Performance Capabilities

Performance extends from L-band through Ka-band (DC-40+ GHz), with many assemblies used reliably in Ku-band and Ka-band applications, and some extending to 65 GHz.

D38999 Typical Applications

Adaptability in routing, configuration, and environmental protection makes D38999 assemblies indispensable across radio communication systems, radar, and electronic warfare equipment.

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VITA67 RF Coaxial Cable Assemblies (Connector Blocks)

For modular platforms, ConductRF offers a complete suite of VITA 67 connector block assemblies designed to meet SOSA™ standards. These solutions are offered as single strand (customer installed) or multi-strand (turnkey connector block) solutions and give integrators flexibility in choosing contact types and brands while ensuring open-standard compliance for modular RF subsystems.

VITA 67 Connector Options

• VITA 67.1 (SMPM), VITA 67.2 (SMPS), VITA 67.3 (NanoRF) Contact Options
• Configurations: module connectors, backplane assemblies, daughtercard assemblies
• Brands supported: SV Microwave, TE Connectivity, Amphenol, Radiall, HUBER+SUHNER

VITA 67 Cable Options

• Low-loss flexible and semi-rigid coax up to 18 GHz
• Phase-matched assemblies for timing-sensitive applications
• Custom lengths, routing, and connectorization for integration flexibility

VITA 67 Ruggedization Options

• Vibration-resistant mounting for airborne and vehicle platforms
• Thermal resilience for extended operating temperature ranges
• Shock-tested connector blocks for defense and aerospace modules
• Durable plating for repeat mating cycles
• Secure retention features to ensure connection stability under dynamic load

VITA67 Performance Capabilities

ConductRF’s VITA 67 cable assemblies are specifically designed to meet all SOSA™ standards and are available with SMPM, SMPS, and NanoRF contacts. These assemblies deliver high-frequency RF performance for modular and scalable systems where high-speed data transmission and minimal signal loss are critical.

VITA 67 Typical Applications: By adhering to SOSA, ConductRF ensures interoperability and flexibility across defense and aerospace systems, enabling more efficient and adaptable infrastructures.

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Custom-Engineered Multi-Signal Harnesses

In addition to D38999 circular and VITA67 connector block-style assemblies, ConductRF designs and manufactures custom multi-signal harnesses for data acquisition, test systems, and industrial control environments. These harnesses integrate RF lines with digital lines and control circuits, and are bundled and protected to meet unique system requirements.

Custom Harness Capabilities

• Bundled and shielded harnesses, with armored options for physical protection
• Integration of DB25 (D-Sub 25-pin, P15) for digital/control signals alongside RF lines
• Build-to-print manufacturing and collaborative custom design services
• Complex hybrid harnesses combining RF, data, and control circuits into a single assembly-delivered fully tested

Why ConductRF for Multi-Signal?

ConductRF is uniquely positioned to support multi-signal integration with a full range of solutions. Our team has expertise in combining RF, fiber, data, and power into one assembly, supported by access to the industry’s leading connector and cable brands, including Harbour Industries, Insulated Wire, Radiall, Southwest Microwave, SV Microwave, TE Connectivity, Times Microwave, Teledyne Storm, and ConductRF’s own high-performance solutions. This unique versatility ensures every assembly is tailored quickly and precisely to program requirements.

100% Lot Testing

Every cable assembly ConductRF ships undergoes 100% testing to confirm electrical and mechanical performance. This rigorous process guarantees that assemblies not only meet program requirements on day one but also provide a data record that ensures consistency across future orders.

How to Order Multi-signal RF Cable Assemblies

Multi-signal solutions are complex, but ConductRF makes it simple to get them right. These assemblies are not available through Maestro. Instead, work directly with our engineers to specify your requirements and receive a tailored solution.

Request a quote today and let us do the hard work of designing the right D38999 circular connector, VITA 67 connector block, or custom multi-signal harness assembly for your program.

Request a Quote on Multi-signal RF Cable Assemblies/Harnesses