Antenna
Mobile/
Cellular Technology
Max Connectivity Speed Frequency (MHz)
Downlink Uplink Note
GSM
14.4 kbit/s 14.4 kbit/s – 900/1800
GPRS
85.6 kbit/s 85.6 kbit/s Class 12
EDGE
236.8 kbit/s 236.8 kbit/s Class 12
3G UMTS
384 kbit/s 384 kbit/s – 850/900/2100
HSDPA
42 Mbit/s – Cat 14
HSUPA
– 5.7 Mbit/s Cat 6
4G LTE
- only MRD-455
100 Mbit/s 50 Mbit/s - 800(B20)/1800(B3)/2600(B7)
Antennas Transmit
(TX)
Receive (RX) Required Label Connector
Main Antenna
Optional Antenna*
GPS Antenna**
YES YES YES MAIN SMA
NO YES NO RxDIV SMA
– – NO GPS SMA
* Antenna connector labeled RxDIV is optional and used for receive diversity.
** Passive GPS antennas only.
SIM
Electrical specification 3 volts SIM supported
Number of slots MRD-315: 1
MRD-355: 2
MRD-455: 2