Pearl Gateway User Manual
T0004906
Version 1.6
TEKTELIC Communications Inc.
Confidential
Page 5 of 52
1
Product Description
1.1
Introduction
This User Guide covers two systems. One system is referred to as the Mobile Gateway which is
comprised of a single module while the second system is referred to as the Fixed Gateway
which is comprised of two modules, the Gateway Module and the Tower Top Unit (TTU)
module. As used within this document, unless otherwise qualified, the term “Gateway” will
refer to the Gateway system which includes the Gateway module, the TTU in the case of the
fixed Gateway, and any accessories such as cables and antennas, etc. Reference to individual
components will generally use the qualifying term “module”.
1.2
Overview
The Pearl Gateway is a wireless base station which operates using LoRa or FSK modulation in
the North American ISM band of 902 MHz – 928 MHz with TDD operation across the entire
band. LoRa is a long range, low power wireless standard for Internet of Things (IoT) application
(
https://www.lora-alliance.org/
). The FSK modulation is customer proprietary. The Gateway is
designed to be compliant with FCC Part 15.247 as either a frequency hopping spreads spectrum
(FHSS) or Digital Transmission (DTS) System. The module has a single transmitter capable of
approxi28 dBm maximum for the fixed gateway (conducted at the TTU antenna port)
and about +20 dBm at the mobile gateway antenna port.
Table 1-1 lists the Pearl system hardware.
Table 1-1: Pearl Gateway Models
Product Code
Description
T0004437
Pearl Mobile Gateway Module
T0004438
Pearl Fixed Gateway Module
T0004372
Pearl Tower Top Unit
The Fixed Gateway is designed to operate always with the Tower Top Unit (TTU) which also
contains an LNA and as well amplifies the RF transmit signal. The TTU and antenna LNA are
powered from the Gateway which injects a bias supply voltage onto the RF antenna feed center
conductor. The Gateway RF antenna feed is protected against overload conditions and short
circuit conditions with an internal auto-resetting protection circuit.
Both Gateways support an active GPS antenna which is powered through the GPS antenna feed
from the Gateway. The GPS antenna feed is protected against overload conditions and short
circuit conditions with an internal auto-resetting protection circuit.
