The NT1065 - the low-power low-cost all-GNSS RF-to-bits receiver for enthusiasts

Today multi-frequency multi-signal satellite navigation equipment is designed by professionals working in large companies. It is also manufactured by large specialized companies. But tomorrow everything will change. The NTLab — a fabless semiconductor company - started to manufacture the Four-Channel All-Frequency Front-End chip - NT1065. It brings professional navigation to the masses. We are introducing NUT4NT - a development board with NT1065 on USB3 interface for fastest evaluation. Full continuous samples stream is captured to the PC for recording and/or processing. Now professional equipment products could be developed and produced even by small or startup companies. For more information about the NT1065 please refer to its specification.

New age of Multi-Frequency Software Defined GNSS Receivers

The main use case of the NT1065 chip is centimeter level precision positioning. This is possible even without the RTK algorithm, which requires the high quality antenna with low phase center variation and sufficient time to converge. The NUT4NT with two inputs provides fast evaluation of such receiving system in the software. Developers can set all the modes of NT1065, capture samples and process it offline or online, in real time.

The second use case of the NT1065 is the array antenna processing system for jammer or interference mitigation. With the NUT4NT with four inputs, fast evaluation of complex antenna array processing system in the software is simplified.

Features and Specifications

The NUT4NT - the multi-Frequency multi-Signal Satellite Navigation Front-End Receiver Board. The NUT4NT is connected to the PC by USB 3.0 interface. The hardware is open source. The software provides the ability to set receivers modes and frequencies, to capture all signals continuously and to make an examples of primary processing features. The software is open source.


Hardware specifications:

  • receiver chip - NT1065

  • USB3 controller - CYUSB3014

  • Clock - 10 MHz TCXO soldered on board or external from SMA connector;

  • RF inputs - 2 or 4, depends on board option;

  • RF inputs referred Noise Floor - 1 dB;

  • ADC resolution - 2 bits;

  • ADC frequency - up to 99 MHz;

  • samples transfer - continuous full stream, from 20 to 100 Mbytes/sec;

  • power - 5V @ 0.5 A from USB or external adapter;

  • size - 70x50x20 mm;

  • All GNSS systems: GPS, GLONASS, Galileo, BeiDou, IRNSS and future;

  • All GNSS band: L1/L2/L3/L5, G1/G2/G5, B1/B2, E1/E5 and future;

  • Four-Channel synchronous receiving for antenna array processing.


Software specifications:

  • Signal dumper (grabber) software

  • Spectrum analyze software

  • nt1065 configure software

  • Support libusb API

  • Support native cypress driver API

  • Software for windows, Linux and potentially all other Op.Systems with libusb

Open Source Hardware and Software

The open sources of board schematics and PCB designs accelerate the evaluation of the hardware. The NUT4NT is also provided with enclosure and so can be used as is in the software receiving system. Antennas and antenna arrays are  provided with optional enclosure and cables to make the evaluation of the system faster. The board schematics and PCB is now documented and will be available after campaign ends. The software source code is now available on GitHub.

RF-to-Bits ICs for the GNSS reception in the market

There are several chips in the world almost suitable for designing GNSS receiver. Some are commonly used in Software Defined Radio boards and have wider frequency range. Some are designated to Satellite Navigation receiving. But no one can provide such capabilities in Multi-Frequency Multi-Standard GNSS receiving as NTLab’s NT1065. It is really first in the world low-cost low-power Multi-Frequency GNSS RF-Front End solution.

Software Defined Receiption of GNSS

Today CPU and GPU computational power makes possible many applications. A GNSS Software Defined Reception is not an exception. There are many books and open source projects about the subject in the world. Nobody will be surprised if in the near future tablets and smartphones will be used for the GNSS Software Reception.


Review of NT1065

Read review of NT1065 chip in Michele's GNSS blog.

NTLab's NT1065

The chip's documentation.


Get the latest ItsFx3 software.

Test of IRNSS-1B

Example of capturing signal of IRNSS-1B satellite.