Data Sheet: NL-2450-2F / NM-2450-2F

2.4 GHz ISM Band – MIMO Broadband Transceivers with Power Boosters

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Designed in the compact miniPCI-Express form factor, the NL-2450-2F and NM-2450-2F are Long Range, 2 MIMO streams, IEEE 802.11n compliant Radio subsystems.  They are developed specifically for applications requiring high throughput over very long range in the outdoor/rugged environments. The N*-2450-2F consists of a high throughput 802.11n radio and 2x bi-directional embedded Power Amps carefully tuned and calibrated together to deliver high performance. The N*-2450-2F radio operates on 2412 MHz~2484 MHz bands. Doodle Labs offers a complete family of models optimized for different applications.

Target Applications 

The N*-2450-2F are ideal for applications that require long range wireless links with very high throughput. With cross polarized, high gain directional antennas, the user can expect to get range of over 25 Km.

  • Mesh applications
  • Point-to-Point links for building to building connectivity
  • Police/ Surveillance Car video transfer
Model No.

NL-2450-2F (802.11n, ath9k driver) NM-2450-2F (Rugged, 802.11n, ath9k driver)

MAC Chipset

11n models – Qualcomm Atheros
QCA9590-BR4B with Extended Temperature range for Outdoor and Rugged models)

Software Support Open Source Linux Driver
ath9k for 11n models

OpenWRT (Wireless Router/Linux OS)

Center Frequency Range 2.412 GHz ~ 2.484 GHz
This varies by the regulatory domain
Channel Bandwidth*

5, 10, 20, and 40 MHz channels (11n models)

Radio Modulation (Auto Adjust)

CCK, BPSK, QPSK, 16 QAM, and 64 QAM (2.4 GHz – 11n models)

Data Rates Supported 802.11n: MCS0-23
802.11b/g: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48 and 54 Mbps (2.4 GHz)
802.11n version 2.0 Capabilities Packet aggregation: A-MPDU (Tx/Rx), A-MSDU (Tx/Rx), Maximal ratio combining (MRC), Cyclic shift diversity (CSD), Frame aggregation, block ACK, 802.11e compatible bursting, Spatial multiplexing, cyclic-delay diversity (CDD), low-density parity check (LDPC), Space Time Block Code (STBC)
Operating Modes AP, STA and Adhoc modes to implement Point to Point, Point to multi Point, and Mesh networks
MAC Protocol TDD with Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)
Wireless Error Correction FEC, ARQ
Wireless Data Security 128 bit AES, WEP, TKIP and WAPI hardware encryption. Support for IEEE 802.11d, e, h, i, k, r, v, w and time stamp standards
FIPS Certification Loop back mode to facilitate FIPS AES certification, Small packet size (96 bytes) in AES encryption at full packet rate
Tx/Rx Specification  Radio Modulation Coding
Max Tx Power
(± 2 dB)
Rx Sensitivity

20 MHz Channel – 11n models
802.11b, STBC CCK 1/2
33 -100
802.11b, STBC  64 QAM 3/4
27 -80
MIMO BPSK 1/2 33 -92
16 QAM 3/4 33 -82
64 QAM 5/6 27 -72
40 MHz Channel – 11n models
MIMO BPSK 1/2 33 -90
MIMO  16 QAM 3/4 33 -79
MIMO  64 QAM 5/6 27 -70
10 MHz Channel – 11n models only
MIMO BPSK 1/2 33 -95
MIMO  16 QAM 3/4 33 -85
MIMO  64 QAM 5/6 27 -75
5 MHz Channel – 11n models only
MIMO BPSK 1/2 33 -97
MIMO  16 QAM 3/4 33 -87
MIMO  64 QAM 5/6 27 -77
Power Offset = 3 dBm

* It is advantageous to use the smallest Channel Bandwidth that can support the Throughput requirements. Smaller bandwidths provide more channels to choose and help avoid interference issues. The system’s SNR is higher at smaller Channel Bandwidths and Range is longer. 

** De-rating of -3 dBm for NL-2450-2F models

Antenna Signal Strength
-35 dBm to -85 dBm (Recommended), (Absolute Maximum=+12 dBm)
Antenna port isolation for concurrent operation +10 dBm signal strength for 5 GHz signal without degrading 2.4 GHz operation
Integrated Antenna Port Protection >20 KV (Human Body Model)
Receiver LNA Gain +10 dB
Receiver Adjacent Channel Rejection (ACR) >38 dB @ 11g, 6 Mbps (Typ)
Receiver Alternate Channel Rejection (ALCR) >42 dB @ 11g, 6 Mbps (Typ)
Receive chain Noise Figure +6 dB
Transmitter Adjacent Channel Leakage power Ratio (ACLR) 
45 dB (Fc ± ChBW)
Transmitter Spurious Emission Suppression -40 dBc
RF Hardware Disable (RF Kill) Pin 20 of miniPCI-E interface. (Required for FAA compliance) 
Control for External Power Amp Available as an optional configuration 
RF Power control In 0.5 dBm steps. Accuracy of power calibration loop ±2 dBm. Each transceiver individually calibrated and tested.
Antenna Ports 2 MMCX Ports (50 Ohms)
Host CPU Board Any CPU board with Industry standard miniPCI-Express interface with minimum 6 mm connector height    
Operating Voltage 3.3 Volts from miniPCI-E interface for radio
3~4.5V for FES. Optional DC-DC converter available for 6V~38V power input.  
Power Consumption Total 16W (14W @ Max power for FES, in data transfer mode on all chains + 2W for radio module)
Total 10W (8W @ 20 dBm power for FES in continuous data transfer mode on all chains + 2W for radio module)
1.2W total power in continuous data receive mode
Shield case temperature range (Operating) -40°C to +80°C (*M-2450-1F, Rugged models)
-40°C to +60°C (*L-2450-1F)

The System’s thermal design should ensure that the transceiver’s shield case temperature is maintained within these specifications. Prism-FES can be mounted away from the host CPU board for better thermal design

Cable Assembly Includes the harness with RF cable and DC power for Prism-FES
Humidity (Operating) 0% – 95% (Non-condensing)    
Dimensions 1x 30 x 50 x 6 mm Radio module, 2x 30 x 52 x 7 mm FES modules, 14 + 2×23 = 60 grams
Mechanical drawing and 3D-CAD files available upon request    
Regulatory Requirements

Designed and Verified to meet various regulatory requirements. Formal testing and approval is required based on the Integrator’s particular host platform. The Integrator is also responsible for obtaining any other required regulatory approvals in target markets for the finished product.

Doodle Labs can offer assistance for compliance testing of the System Integrator’s host platform.

CE Certification Certificate # TCT160601E007C. in conformity with all the requirements of the European Directive 1999/5/EC – EN 301 893 V1.8.1, EN 300 328 V.1.8.1, EN 301 489-1 V1.9.2, EN 301 489-17 V2.2.1, EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011+ A2:2013
IC Certification 21411-NM24502F
RoHS/WEEE Compliance  Yes. 100% Recyclable/Biodegradable packaging    

 * Specifications are subject to change without prior notice.

System Integration


As shown in the block diagram, the modular nature of the MIMO radio transceivers allow for accelerated development of the wireless modem. Any embedded Single Board Computer with standard miniPCI-Express interface is required. The Linux distribution OpenWRT has evolved over time and provides advanced features in a wireless router. It is a stable distribution and many OEMs are using OpenWRT as a starting point and customize further for their application. The distribution includes the ath9k or ath10k drivers to interface with the MIMO transceivers. Both OpenWRT and open source drivers (ath9k and ath10k) have extensive online documentation available. The user group forums also provide responsive technical support.