4G LTE Connectivity

Vartech’s DiamondVue and fully sealed ToughStation series of rugged computers and kiosks are now available with optional 4G LTE connectivity. Ideal for industrial Internet of Things (IoT) applications.

Industrial 4G LTE connections allow users to benefit from secure, low latency, and high bandwidth wireless communications by expanding the connectivity to isolated and off-site applications. This was developed to be used at remote locations, on the go, and always connected. The technology serves as a great backup for WiFi in case your wireless connection fails you. In addition to higher capacity, the benefits of 4G LTE are lower latency times that play a key role in the smooth data retrieval of IoT applications that rely on real-time information, such as data from production systems.

The antenna is available as non-weatherproof or IP67 certified and uses Distributed Network Protocol 3 (DNP3) for HMI, SCADA, and PLC operations. The modem supports Global Navigation Satellite System (GNSS), dual SIMs, single SKU for AT&T/ T-Mobile/ Verizon Networks, and integrated TCP/IP stacks. Allowing for more flexible placement options, dedicated and responsive customer care, and continuous monitoring for disruption-free connectivity.


4G LTE connectivity is available on our DiamondVue and ToughStation series of computers, as well as our ToughStation kiosks and hazardous area kiosks.

Modem Features:

  • Small Form-Factor
  • 4G LTE Category 4 with 3G Fallback
  • Band 14 support – FirstNet on AT&T’s Network
  • GNSS Support for GPS, Glonass, Beidou, Galileo, and QZSS
  • Multi-Carrier Support
  • Longest Network Life
  • CAT 4 LTE Speeds (Up to 150 MB down/50 MB up)
  • Easily Connect to AT&T, T-Mobile, or Verizon Networks.
  • Improved Reception with RX Diversity
  • 8 Band LTE Support
  • Integrated GNSS Support
  • Optional dual SIM Support

DV Antenna Features:

  • 698-960 MHz
  • 1710-2170 MHz
  • 2500-2700 MHz
  • Ultra-Wide Band Antenna
  • High Performance
  • Hinged Detachable Antenna

TS Antenna Features:

  • 698-960 MHz
  • 1710-2170 MHz
  • 2500-2700 MHz
  • Ultra-Wide Band Antenna
  • High Performance
  • IP67 Certified


4G Long Term Evolution (LTE) is a standard for wireless transmission data, commonly called the fourth generation of mobile network technology. The standard is designed for lower latency (the time data travels via the network) and increased bandwidth. Bandwidth speeds can be as high as 150 Mbps on the downlink and up to 50 Mbps on the uplink.

The technology is SIM (Subscriber Identification Module) card based, and our modems support AT&T, T-Mobile, and Verizon as carriers.

Important Benefits of 4G LTE:

  • The higher bandwidth enables faster access to content and applications, particularly video applications that can only be offered today on fixed systems.
  • The low latency enables time-sensitive applications like voice services.
  • The all-IP architecture enables new converging services based on the IP Multimedia Subsystem (IMS).

What are some applications that can benefit from 4G/LTE connections?

Military & Emergency


Mission critical vehicles and remote sites for military and first responders.



Remote construction sites where wired or wifi connections are unavailable.

Oli & Gas


Remote well site, compressor, and storage tank monitoring for HMI access from anywhere.


Public service computers such as toll stations or informational kiosks in remote areas.



Automation and equipment management at remote locations, such as weigh stations.

Modem Specifications:

Throughput: 150 Mbps Download
42 Mbps Upload
Supply Voltage: 3.8V Nominal
Input Voltage: 3.4 V to 4.2 V
I/O Voltage: 1.8 V to 5.5 V
Temperature Range (C): -40º to +85º
Dimensions (mm): 29 × 33 × 10.5
Weight: 8 grams
Compliance: RoHS
Parameters Cellular/LTE Antenna
Region: North America
Carriers: AT&T, T-Mobile, or Verizon
Bands (LTE Cat 4): FDD B2 (1900), B4 (1700), B5 (850), B12 (700),
B13 (700), B14 (700), B66 (1700), B71 (600)
Bands (DC-HSPA+): B2 (1900), B4 (1700), B5 (850)
Download (Mbps): LTE: 150 HSPA+: 42.0
Upload (Mbps): LTE: 50 HSPA+: 5.76
Network Stack Support: Integrated TCP/IP, UDP/IP, HTTP, FTP, SSL/TLS, SMTP,
IPv4/IPv6, NITZ, PING, PPP Stacks
Location GNSS: GPS, Glonass, Beidou, Galileo, and QZSS
SIM Type: Dual MFF2 Verizon and 3FF standard

Antenna Specifications:

Parameters DV Antenna IP67 TS Antenna
Technologies: GSM, CDMA, DCS, PCS, GPRS, WCDMA,
Standards: 2G 3G 4G 2G 3G 4G
Band (MHz): 700/850/900 1700/1800/1900/2100 2600 700/850/900 1700/1800/1900/2100 2600
Frequency (MHz): 698 – 960 1710 – 2170 2500 – 2700 698 – 960 1710 – 2170 2500 – 2700
Return Loss (dB): ~ -16.0 ~ -9.8 ~ -8.3 ~ -11.2 ~ -12.8 ~ -14.3
Voltage Standing Wave Ratio: ~ 1.6:1 ~ 2.1:1 ~ 2.3:1 ~ 2.1:1 ~ 1.6:1 ~ 1.5:1
Efficiency (%): ~ 41.6 ~57.6 ~ 55 ~ 56 ~51 ~ 43
Peak Gain (dB): ~ -1.6 ~ 1.5 ~ 2.9 ~ 2.0 ~ 3.9 ~ 3.5
Average Gain (dB): ~ -3.8 ~ -2.4 ~ -2.6 ~ -2.6 ~ -2.9 ~ -3.6
Impendance (Ohm): 50 50
Polarization: Linear Linear
Radiation Pattern: Omni-Directional Omni-Directional
Max. Input Power (W): 25 25
Radome: PC/ABS UV Stable PC/ABS UV Stable
Operating Temperature (C): -10 to 60 -10 to 60

Antenna Dimensions and Drawings:

DiamondVue Antenna
External Dimensions: 135 mm × 19 mm × 10 mm
IP67 ToughStation Antenna
External Dimensions: 60 mm × 81 mm

4G-LTE Connectivity is available on the following product families

DiamondVue Industrial Grade Displays


  • Industrial-grade computers and monitors
  • Screen sizes 6.5” to 43”
  • NEMA 4/4X (IP65/66) protection
ToughStation Fully Sealed with NEMA 4 Protection


  • Fully sealed computers and monitors
  • Screen sizes 8.4” to 43”
  • NEMA 4/4X (IP65/66) protection
Workstation Computers


  • Fully sealed industrial-grade kiosks
  • 3 enclosure designs
  • Screen sizes 15″ to 21.5″
  • Available as purge-protected hazardous units