NDR684

Four Channel, Wide Bandwidth, High Performance 18 GHz SDR in a Low SWaP, Ruggedized Package

Designed for the most difficult RF environments, the NDR684 offers 4 wideband 500 MHz receive channels that can be independently or phase coherently tuned for search, survey and direction finding (DF) applications.

The NDR684 is a four receive channel software defined radio, combining a super-heterodyne RF front end that provides 1 MHz to 18 GHz frequency coverage with an AMD Xilinx RFSoC for digitization and signal processing. The 500 MHz bandwidth channels are digitized, formatted into VITA 49 packets and are transmitted over a 100 GbE interface. Additional signal bandwidths can be realized through digital channelization. The NDR684 is enclosed in a small form factor, ruggedized package ready for airborne, vehicle, and fixed site installation.

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Specifications

FEATURES

Four High Performance Rx Channels
1 MHz to 18 GHz Frequency Coverage
500 MHz Bandwidth per Channel
Calibrated RF Performance Across Frequency
Independent and Coherent Tuning
Fast Frequency Hopping
Selectable Wideband Digital Downconverters (DDCs)
Low SWaP, Ruggedized
VITA 49 Streaming on 100 GbE
Restful API Command and Control
Commercial Off-the-Shelf (COTS)

COMPATIBILITIES

Resources

Products

All

MATCHSTIQ™ G20

MATCHSTIQ™ G40

MATCHSTIQ™ X40

MATCHSTIQ™ Z2

MATCHSTIQ™ Z3u

MATCHSTIQ™ V40

MATCHSTIQ™ Z4

NDR318

NDR325

NDR358

NDR364

NDR374

NDR504

NDR505

NDR551

NDR562

NDR585

NDR818

NDR888

NDR684

SIDEKIQ™ M.2

SIDEKIQ™ Mini PCIE

SIDEKIQ™ NV100

SIDEKIQ™ NV800

SIDEKIQ™ NVM2

SIDEKIQ™ Stretch

SIDEKIQ™ VPX400

SIDEKIQ™ VPX410

SIDEKIQ™ X4

SIDEKIQ™ Z2

Epiq Skylight™

Epiq ERA™

Epiq PRiSM™

Epiq Flying Fox® Enterprise

DeepSig

Libsidekiq

GNU Radio

VNX+ Development Platform

APPLY FILTERS

Datasheets

NDR684

04/23/2026

Epiq Datasheet NDR684

Datasheets

MATCHSTIQ™ G20

MATCHSTIQ™ G40

MATCHSTIQ™ X40

MATCHSTIQ™ Z2

MATCHSTIQ™ Z3u

MATCHSTIQ™ V40

MATCHSTIQ™ Z4

NDR318

NDR325

NDR358

NDR364

NDR374

NDR504

NDR505

NDR551

NDR562

NDR585

NDR818

NDR888

SIDEKIQ™ M.2

SIDEKIQ™ Mini PCIE

SIDEKIQ™ NV100

SIDEKIQ™ NV800

SIDEKIQ™ NVM2

SIDEKIQ™ Stretch

SIDEKIQ™ VPX400

SIDEKIQ™ VPX410

SIDEKIQ™ X4

SIDEKIQ™ Z2

VNX+ Development Platform

NDR684

02/02/2026

Epiq Block Diagram Cheat Sheet

Datasheets

MATCHSTIQ™ G20

MATCHSTIQ™ G40

MATCHSTIQ™ X40

MATCHSTIQ™ Z2

MATCHSTIQ™ Z3u

MATCHSTIQ™ V40

MATCHSTIQ™ Z4

NDR318

NDR325

NDR358

NDR364

NDR374

NDR504

NDR505

NDR551

NDR562

NDR585

NDR818

NDR888

SIDEKIQ™ M.2

SIDEKIQ™ Mini PCIE

SIDEKIQ™ NV100

SIDEKIQ™ NV800

SIDEKIQ™ NVM2

SIDEKIQ™ Stretch

SIDEKIQ™ VPX400

SIDEKIQ™ VPX410

SIDEKIQ™ X4

SIDEKIQ™ Z2

VNX+ Development Platform

NDR684

02/02/2026

Epiq RF Front Ends Cheat Sheet

Datasheets

MATCHSTIQ™ G20

MATCHSTIQ™ G40

MATCHSTIQ™ X40

MATCHSTIQ™ Z2

MATCHSTIQ™ Z3u

MATCHSTIQ™ V40

MATCHSTIQ™ Z4

NDR318

NDR325

NDR358

NDR364

NDR374

NDR504

NDR505

NDR551

NDR562

NDR585

NDR818

NDR888

SIDEKIQ™ M.2

SIDEKIQ™ Mini PCIE

SIDEKIQ™ NV100

SIDEKIQ™ NV800

SIDEKIQ™ NVM2

SIDEKIQ™ Stretch

SIDEKIQ™ VPX400

SIDEKIQ™ VPX410

SIDEKIQ™ X4

SIDEKIQ™ Z2

VNX+ Development Platform

NDR684

02/02/2026

Epiq Product Groups Cheat Sheet

Application notes

Case studies

Open-source repositories

NDR818

NDR888

NDR684

11/19/2025

NDR GitHub Repository

We support open-source efforts such as GNU Radio, SoapySDR as well as PlutoSDR on some of our products. Visit our GitHub repositories to learn more.

Blog

User Manuals

ndr684

Matchstiq V40: Use Cases, Capabilities, and Key Questions Answered

What is the Matchstiq V40 used for?

The Matchstiq V40 is a high-performance software-defined radio (SDR) designed for advanced RF applications such as electronic warfare, spectrum monitoring, signals intelligence (SIGINT), and next-generation communications. It is built for scenarios that require wide bandwidth, low latency, and real-time processing at the edge.

When should I choose Matchstiq V40 over other SDR platforms?

The V40 is best suited for applications that require extremely wide instantaneous bandwidth (up to 2 GHz), direct RF sampling, and high-throughput data streaming. It is typically chosen over traditional SDRs when performance, speed, and flexibility are critical, especially in defense, aerospace, and advanced R&D environments.

What makes the Matchstiq V40 architecture different from traditional SDRs?

The V40 uses a direct RF sampling architecture with the Analog Devices AD9084 MxFE and an AMD Versal Adaptive SoC. This eliminates the need for intermediate frequency stages, reducing latency and enabling significantly higher bandwidth and more efficient signal processing compared to legacy SDR designs.

What frequency range and performance capabilities does the Matchstiq V40 support?

The V40 operates from 1 MHz to 9 GHz with up to 2 GHz instantaneous bandwidth and a 2.5 GS/s sample rate. It also supports high-speed VITA 49 data transfer via 100 GbE, making it suitable for real-time, data-intensive RF applications.

Is the Matchstiq V40 suitable for deployment in field or embedded systems?

Yes. The V40 is designed with a low SWaP profile, operating at around 40W and supporting temperatures from -40°C to 70°C. Its compact form factor and rugged design make it suitable for airborne platforms, mobile deployments, and other demanding field environments.

Why choose Epiq Solutions for high-performance SDR platforms like Matchstiq V40?

Epiq Solutions combine advanced RF hardware, FPGA development, and high-performance processing capabilities into a unified SDR platform. Our ecosystem, including APIs and development tools, enables faster prototyping and deployment for teams building production-grade RF and spectrum intelligence systems.