Data Sheet

Data Sheet 98-2844 Rev AA | 7
Series 6 Gridstream Mobile Radio T1651/T1661 Data Sheet
Table 2. Series 6 GMR T1661 Specification
Element Description
Radio Model Series 6 GMR T1661
Communication Protocol (PHY) 802.15.4-2015
MAC/PHY Features
MAC 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
RF Port Internal Multi-Band 1dBi Antenna
Sub-GHz Band Characteristics: North America
Network Operating Mode Wi-SUN
Frequency Range (Fc) 902.2 MHz – 927.8 MHz
Channel Width 200, 400, 800 & 1200 kHz
Number of Channels 129, 64 31 & 21
Multicast Modulation 2-FSK 50 kbps
Unicast Modulation Support
2-FSK: 50 - 200 kbps
OFDM Option 3: MCS2 - MCS3 (100 - 200 kbps)
OFDM Option 2: MCS3 - MCS5 (400 - 800 kbps)
OFDM Option 1: MCS5 - MCS6 (1600 - 2400 kbps)
Data Rate Coverage 50 kbps - 2400 kbps
Transmitter Output Power 50 mW - 800 mW
Receiver Sensitivity
(10% PER, conducted)
F2B50 = -108 dBm
F2B150 = -100 dBm
F2B200 = -99 dBm
O3M2 = -109 dBm
O3M3 = -107 dBm
O2M3 = -106 dBm
O2M4 = -104 dBm
O2M5 = -101 dBm
O1M5 = -96 dBm
O1M6 = -90 dBm
Draft 05.10.2022 A