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The stack is ours. The silicon decides what it can run on.

FLSEMI's DECT NR+ MAC stack is developed for the Nordic nRF9151 System-in-Package. That choice narrows the hardware question to one thing: which nRF9151 module carries it. We work with module partners in North America and Asia so that customers can source the hardware where it makes sense for them — and still run the same stack.

DECT NR+ · written to ETSI TS 103 636 Nordic nRF9151 target LTE-M · NB-IoT 3GPP NB-NTN satellite

Why nRF9151

One System-in-Package, four ways to reach the network

Nordic's nRF9151 carries LTE-M, NB-IoT, DECT NR+ and 3GPP NB-NTN satellite. For us the last two matter most — DECT NR+ because it is what our MAC stack implements, NB-NTN because it is what happens when there is no tower at all.

Our layer

DECT NR+ MAC stack

FLSEMI's DECT NR+ MAC stack is written to ETSI TS 103 636 Release 2 and runs on the nRF9151. It is our own software IP — the part we develop, maintain and license. It has not yet been submitted for conformance testing.

Their layer

The module

The stack needs a physical module: RF matching, antenna, power, a footprint. That is what a module supplier brings, and why the choice of supplier is a real engineering decision rather than a purchasing one.

The seam

Where the two meet

Certification status, pin exposure, antenna architecture and integration BOM decide how much of our engineering budget goes into bring-up instead of into the application.

LooUQ MTC.2 N9151 embedded modem based on Nordic nRF9151

Image courtesy of LooUQ, used with permission

Module Partner · North America

MTC.2 N9151

Embedded modem · Michigan, United States

LooUQ is a Michigan-based embedded modem manufacturer. Its MTC.2 N9151 is built on the same nRF9151 our MAC stack targets, and we have run our DECT NR+ MAC stack on it — on an earlier revision; the current revision has not been re-verified. Its Skylo NTN certification is inherited from Nordic's pre-certified nRF9151, so satellite coverage does not require a separate certification programme.

SiliconNordic nRF9151 System-in-Package

TerrestrialLTE-M · NB-IoT

Non-terrestrial3GPP NB-NTN · Skylo certified · automatic cellular↔satellite switching

Also supportedDECT NR+ (ETSI TS 103 636)

AntennaUnified architecture — terrestrial LTE and satellite NB-NTN bands on a single element

IntegrationTwo-component design; minimal external parts

VariantA1A (915 MHz / 1.9 GHz) — the sub-GHz variant. A0A is 1.9 GHz only and is not usable for DECT NR+ in the United States.

InterfaceLooUQ MTC.2 footprint, exposing the nRF9151's full pin capability

FLSEMI part numberMTC2-N9151-FL — the module supplied with FLSEMI's DECT NR+ MAC stack pre-flashed

FLSEMI stackDECT NR+ MAC stack brought up on this module (earlier revision) — not re-verified on the current revision, and not a claim of protocol conformance

ManufacturerLooUQ · Michigan, United States

Development Board · LooUQ

MTC2-UXplor

Development board for the MTC.2 N9151

The fuller of LooUQ's two evaluation routes. Where the BRK breakout exposes the module for quick bring-up, UXplor adds integrated voltage regulators and an I²C-controlled RGB LED — enough to exercise power sequencing and field behaviour on the bench before a custom carrier board exists.

PurposeAdvanced evaluation platform for MTC.2 N9151

PowerIntegrated voltage regulators

IndicationI²C-controlled RGB LED

AlternativeMTC2-N9151-BRK-KIT — streamlined breakout for early evaluation

Remote infrastructure Utilities & water Agriculture Environmental sensing

LooUQ MTC.2 N9151 UXplor development board

Image courtesy of LooUQ, used with permission

Evaluation kit

MTC2-N9151-UXP-KIT-FL

Two of everything — because a radio stack is judged on a link, not on an endpoint. The -FL suffix marks the FLSEMI build: modules pre-flashed with our DECT NR+ MAC stack, on the A1A variant that carries the 915 MHz band DECT NR+ needs in the United States.

Kit contents

Two nodes, pre-flashed

2 × MTC2-N9151-FL modems — A1A (915 MHz / 1.9 GHz), pre-flashed
2 × MTC2-UXplor development boards
2 × Taoglas FXP40.07.0085A antennas

Supplied as assembled units, ready to run. Pricing is quoted per enquiry — contact us for a quote →

Module Partners

Two regions, one stack

Hardware sourcing is rarely only a technical decision — tariffs, lead times, certification regimes and procurement rules all pull in different directions. We keep module partners on both sides of the Pacific so the stack is never the reason a project has to buy from somewhere it would rather not.

North America

LooUQ · Michigan, USA

MTC.2 N9151 embedded modem and MTC2-UXplor development board, built on Nordic nRF9151 with Skylo NTN certification inherited from the module. Detailed above.

Asia

Module partner in place

Asian module sourcing for volume programmes where cost structure decides the design. The partner is established; we do not name it publicly at this stage.

What stays constant

Change the module, keep the stack

Every partner module is built on the Nordic nRF9151, so FLSEMI's DECT NR+ MAC stack — written in-house to ETSI TS 103 636 Release 2 — ports across them rather than being rewritten for each. The module is a sourcing decision. The stack is not.

Nordic nRF9151DECT NR+ MAC · in-houseETSI TS 103 636LTE-M · NB-IoT · NB-NTN