Trinidad and Tobago National Frequency Allocation Plan Summary
The Trinidad and Tobago Frequency Allocation Table (TTFAT), Version 4.0 (January 2026), published by the Telecommunications Authority of Trinidad and Tobago (TATT), replaces the 2019 version (Version 3.0). This updated plan incorporates decisions from the 2023 World Radiocommunication Conference (WRC-23) and aligns with ITU-R Region 2 allocations while prescribing specific national footnotes (prefixed with "TT") to address domestic spectrum requirements and class-licensing regimes.
Key Frequency Allocations for Radio Devices
Mobile and Cellular Services (IMT)
In alignment with regional harmonization, the Authority has identified several bands for International Mobile Telecommunications (IMT) and public mobile telecommunications services:
700 MHz Band: 703–748 MHz paired with 758–803 MHz (TT17).
850 MHz Band: 824–849 MHz and 869–894 MHz (TT20).
1.8/2.1 GHz Bands: 1710–1780 MHz and 2110–2180 MHz (TT24).
1.9 GHz Band: 1850–1915 MHz and 1930–1995 MHz (TT26).
2.6 GHz Band: 2600–2690 MHz (TT60).
3.5 GHz Band: 3300–3400 MHz and 3550–3650 MHz (TT59) are allocated on a national basis for public mobile services.
Wireless LAN and WiFi (WLAN)
Bands designated for Broadband Wireless Access (BWA) and WLAN devices are generally subject to class licensing, meaning they are exempt from individual frequency permits if they meet specified technical standards:
2.4 GHz Band: 2400–2483.5 MHz (TT29).
5 GHz Bands: 5150–5250 MHz (restricted to indoor use only per TT30), 5250–5350 MHz, 5470–5725 MHz, and 5725–5850 MHz.
6 GHz Band (Wi-Fi 6E): 5925–6425 MHz is now class-licensed for Wi-Fi 6E devices (TT72).
60 GHz Band: 57–71 GHz is class-licensed for data communications transmission modules (TT69).
Short Range Devices (SRD), RFID, and Bluetooth
Trinidad and Tobago utilizes extensive class-licensing for Short Range Devices to simplify type approval for manufacturers:
Bluetooth: Operates in the 2400–2483.5 MHz range under class license (TT51).
RFID: Designated bands include 13.110–14.010 MHz, 902–928 MHz, and 903.14–927.26 MHz (TT44).
Ultra-Wideband (UWB): Handheld UWB systems are permitted in the 3,100 MHz–10,600 MHz range (TT62).
LoRaWAN: Specifically identified in the 902–928 MHz range (TT64).
FRS/GMRS: Family Radio Service and General Mobile Radio Service devices are class-licensed in the 462.525–462.750 MHz and 467.525–467.750 MHz ranges (TT12).
MURS: Multi-Use Radio Service is permitted at 154.6 MHz (TT71).
Technical Restrictions and Coordination
Manufacturers and service providers must adhere to the following general and specific requirements:
Class License Requirement: While individual licenses may not be required for devices in the bands mentioned above, all such equipment must undergo the Authority’s equipment certification process (Type Approval) to ensure compliance with emission and power limits.
Harmful Interference: Secondary services (such as those under class licenses) must operate on a non-interference, non-protection basis relative to primary services. If interference occurs, the secondary user must cease operation.
Power Limits: Specific EIRP and power spectral density limits are governed by the Schedule of Devices Eligible for Use under a Class Licence. For example, amateur use in the 5332–5405 kHz range is strictly limited to 100W ERP (TT37).
Moratoriums and Relocation: A moratorium exists on new fixed systems in the 1452–1492 MHz band to facilitate digital radio broadcast (TT23). Similarly, existing fixed systems in the 1990–2025 MHz and 2160–2200 MHz bands are subject to a migration plan to accommodate mobile-satellite systems (TT27).
Modifications to Previous Plans
Version 4.0 integrates the outcomes of WRC-19 and WRC-23, specifically introducing allocations for High-Altitude Platform Stations (HAPS) as IMT base stations (HIBS) in several bands (e.g., 694–960 MHz and 2.5 GHz range) and updating frequency identifications for the latest generation of WiFi (6E) and IoT (LoRaWAN) technologies.
