Connecting External Antennas

The CTM-ONE comes equipped with internal antennas but offers the option to utilize external antennas when needed. It's important to select antennas based on the specific application for which the device will be used. All antenna connectors utilize SMA jacks, except for Wi-Fi/Bluetooth, which require reverse polarity SMA (RP-SMA) connectors.

For optimal performance, antennas should be mounted vertically as high as possible and with clear line of sight in all directions. Regulatory requirements mandate that the device must be positioned to maintain a separation distance of at least 20cm (8") from any person.

The choice to utilize external antennas should be determined through a performance evaluation of how the product operates when positioned in the desired location within the vehicle or fixed site.

Cellular

The cellular connection supports MIMO (multiple-input multiple-output) for LTE Category 1 and 4 models. To optimize performance, it is recommended to connect both the primary and secondary cellular antennas to an antenna system that supports diversity, or alternatively, to two separate antennas.

GNSS

The GNSS antenna should be an active type with a minimum gain of 26dB and compatible with a 3.3 volt DC supply provided directly by the CTM-ONE via the coax cable. Typically, the antenna should be installed on the upper horizontal surface of a vehicle or building, ensuring a clear 360-degree view of the sky.

Connect a suitable GPS antenna to the port labeled "GPS". For optimal performance, choose a GPS antenna that supports GPS, Glonass, Beidou, Compass, Galileo, and QZSS (GNSS) constellations.

Wi-Fi/Bluetooth

Local Wireless via Wi-Fi (802.11bgn) and Bluetooth (802.15.1) requires an external Wi-Fi antenna connected via a reverse polarity SMA connector.