Doodle Labs RM 915 1G User Manual

RM-915-1G

900 MHz, Rugged, Long Range 2 Stream Broadband Radio Transceiver

Features

• Very low size, weight, and power (SWaP) for mobile applications

• 37x57x11 mm, 40 grams (1 stream)

• Available in frequency bands up to 6 GHz

• Configurable channel size from 3~40 MHz

• Dynamic Link adaptation to optimize throughput depending on channel conditions

• Adaptive radio modulations from DSSS up to 64QAM

• High Tx power for long range (adjustable up to 1W)

• Up to 50 Mbps Iperf throughput

• Ethernet interface to allow easy integration into various applications

• Point-to-Point, Point-to-Multipoint, and Adhoc operating modes

• Mobile mesh router (Optional)

• High wireless data security with up to 128 bit AES encryption

• OTA firmware upgrade

• Industrial temperature range (-40C to +85C)

• COTS – Commercial off the Shelf

Target Applications

• Unmanned Aerial Vehicles (Drones)

• Mobile robotics

• Mines and Construction site machines

• Public Safety/Video surveillance

• Private Networks in Oil and gas fields

• Wind Turbine and Solar farms

• Wireless ethernet extensions

TECHNICAL SPECIFICATIONS

Model No. RM-915-1G (Rugged, Long Range applications

Qualcomm Atheros

Chipset

Software Support OpenWRT (Wireless Router/Linux OS)

Center Frequency Range 902 MHz ~ 928 MHz

Channel Bandwidth* 5 MHz

Radio Modulation (Auto Adjust) CCK, BPSK, QPSK, 16 QAM, and 64 QAM

Data Rates Supported

802.11n version 2.0 Capabilities

QCA4531 with Extended Temperature range

802.11 b/g: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48 and 54
Mbps (2.4 GHz)

802.11n: MCS0-7

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)

AP, STA and Adhoc modes to implement Point to Point,

Operating Modes

MAC Protocol

Wireless Error Correction FEC, ARQ

Wireless Data Security

FIPS Certification

Tx/Rx
Specification

5 MHz Channel

Radio

Modulation Coding Rate

Point to multi Point, and Mesh networks

TDD with Carrier Sense Multiple Access with Collision
Avoidance (CSMA/CA)

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

Loop back mode to facilitate FIPS AES certification, Small
packet size (96 bytes) in AES encryption at full packet
rate

Tx Power

(±2dBm)**

Rx Sensitivity

(Typ)

802.11n BPSK 1/2 27 -98

802.11n 16 QAM 3/4 27 -89

802.11n 64 QAM 3/4 21 -82

* 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.

Antenna Signal Strength

Receiver LNA Gain >10 dB

Receive chain Noise Figure 6 dB

RF Power control by Driver

RF Hardware Disable (RF Kill)

Control for External Power Amp Available as an optional configuration

Receiver Adjacent Channel Rejection
(ACR)

Receiver Alternate Channel Rejection
(ALCR) >35 dB @ 11a, 6 Mbps (Typ)

-35 to -85 dBm (Recommended), Absolute Maximum=+12
dBm

In 0.5 dBm steps. Accuracy of power calibration loop ±2
dBm. Each transceiver individually calibrated and
tested.

Pin 20 of miniPCI-E interface. (Required for FAA
compliance)

>18 dB @ 11a, 6 Mbps (Typ)

Transmitter Adjacent Channel Leakage
power Ratio (ACLR) 45 dB (Fc ± ChBW)

Transmitter Spurious Emission
Suppression -40 dBc

PHYSICAL, ENVIRONMENTAL AND OTHER SPECIFICATIONS

Antenna Ports 1 Ports (50 Ohms) with MMCX connectors

Integrated Antenna Port Protection >20 KV (Human Body Model)

Host Interface 100Base-T Ethernet

Host CPU Board Any CPU board with Industry standard miniPCI-Express

interface with minimum 6 mm connector height

Operating Voltage 5~42 V

6.5W in data transfer mode

Power Consumption

Shield case temperature range
(Operating)

Cable Assembly Assembly drawing available upon request.

Dimensions

Humidity (Operating) 0% – 95% (Non-condensing)

2.1W in data receive mode

-40°C to +85°C (Rugged, Long range RM-915-1G model)
The System’s thermal design should ensure that the
transceiver’s shield case temperature is maintained within
these specifications.

37 x 57 x 11.5 mm
40 grams
Mechanical drawing and 3D-CAD files available upon
request

Designed and Verified to meet various regulatory
requirements. Formal testing and approval is required
based on the System Integrator’s particular host platform
and antenna type. The System Integrator is also
responsible for obtaining all required regulatory approvals
in target markets for the finished product.
Doodle Labs can offer assistance for compliance testing

Regulatory Requirements

RoHS/WEEE Compliance Yes. 100% Recyclable/Biodegradable packaging
* Specifications are subject to change without prior notice.

of the System Integrator’s host platform.

3)The antenna must be installed with the transmitter module through the specific shield cable.

IC Statement

This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following
two conditions:

(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired

operation of the device.

The term “IC: “ before the certification/registration number only signifies that the Industry Canada

technical specifications were met. This product meets the applicable Industry Canada technical
specifications.

The host product will be labelled to display the IC number for the module, preceded by the word "Contains",
as follows: Contains IC: 21411-RM9151G

Le présent appareil est conforme aux CNR d'Industrie Canada applicable aux appareils radio exempts
de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire
de brouillage,

et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage
est susceptible d'en compromettre le fonctionnement

Singapore:
Doodle Labs (SG) Pte. Ltd.

150 Kampong Ampat
KA Center, Suite 05-03
Singapore 368324
Tel: [phone]

USA:
Doodle Labs LLC

2 Mattawang Drive
Somerset, NJ 08873
Tel: [phone]
Fax: [phone]