Data Sheet

4 | 98-2844 Rev AA Data Sheet
Series 6 Gridstream Mobile Radio T1651/T1661 Data Sheet
Table 1. Series 6 GMR T1651 Specification
Element Description
Radio Model Series 6 GMR T1651
Communication Protocol (PHY) IEEE 802.15.4-2020
MAC/PHY Features
MAC
Simultaneous multi-band support
Automatic selection of 'best' Band based on Link Quality
Automatic selection of 'best' Modulation based on Link Quality
PHY
Adaptive Power Control (i.e., Short range output power back-off) Precision Output
Power Management
Clear Channel Assessment
Hardware Capabilities
Clock Speed 120 MHz
RAM Memory 640 KB
FLASH Memory 2 MB + 4 MB External
RF Modulation IEEE 802.15.4 SUN FSK, O-QPSK & OFDM
RF Bands Sub-GHz & 2.4-GHz Simultaneous Operation
RF Port Single 50Ω U.FL Male Connector
Mechanical
Operating Temperature -20 to 65C
IP Rating IP53 (when rubber plug is closed)
Sub-GHz Band Characteristics: North America, Mexico & Brazil
Network Operating Mode Series 5 Compatible Greenfield
Frequency Range (Fc)
USA/Canada/Mexico: 902.4 - 927.6
MHz
902.4 MHz – 926.8 MHz
Brazil: 902 - 907.5 MH, 915 - 928 MHz N/A
Channel Width 400 KHz 1200 kHz
Number of Channels 64 20
Multicast Modulation 2-FSK 50 kbps OFDM Option 1 MCS0 (100 kbps)
Data Rate Coverage 50 kbps - 600 kbps 100 kbps - 2400 kbps
Transmitter Power 50 mW - 800 mW 10 mW - 427 mW (average)
Transmitter Low Power 400 µW (peak) N/A
Receiver Sensitivity
(IEEE 802.15.4)
F2B50 = -108 dBm
F2B150 = -100 dBm
F2B200 = -99 dBm
O3M3 = -107 dBm
O3M4 = -105 dBm
O3M5 = -102 dBm
O3M6 = -97 dBm
O1M0 = -110 dBm
O1M1 = -109 dBm
O1M2 = -105 dBm
O1M3 = -102 dBm
O1M4 = -99 dBm
O1M5 = -96 dBm
O1M6 = -90 dBm
Sub-GHz Band Characteristics: Philippines
Network Operating Mode Series 5 Compatible
Draft 05.10.2022 A