India UHF RFID Frequency 865-867 MHz

In India, the Wireless Planning & Coordination (WPC) wing of the Department of Telecommunications (DoT) governs all radio frequency spectrum. Under Gazette Notification GSR 564(E) (Use of Low Power and Very Low Power Radio Frequency Devices, Exemption from Licensing), the frequency band 865 MHz to 867 MHz is de-licensed for indoor and outdoor Radio Frequency Identification (RFID) systems, provided that equipment operates strictly within specified emission masks and transmitter power constraints.

WPC regulations mandate that passive UHF RFID reader transmissions must not exceed 4 Watts Effective Isotropic Radiated Power (EIRP), which corresponds to approximately 2.46 Watts Effective Radiated Power (ERP). For fixed reader setups, this typically means a transmitter conducted power of +30 dBm (1 Watt) connected to a circular polarized panel antenna with maximum gain of 6 dBi (factoring in 1–2 dB of coaxial cable and connector insertion loss).

The 865–867 MHz band spans a total bandwidth of 2 MHz. Under Indian spectrum rules, carrier frequencies are spaced at 200 kHz intervals, yielding approximately 10 discrete carrier channels (centered at 865.1 MHz, 865.3 MHz, 865.5 MHz, up to 866.9 MHz). Industrial readers utilize frequency-hopping spread spectrum (FHSS) or listen-before-talk (LBT) mechanisms across these channels to prevent inter-reader collision in multi-dock warehouse environments.

While end-users do not need an operational wireless station license to use 865–867 MHz equipment, manufacturers and importers must obtain Equipment Type Approval (ETA) from WPC before commercializing RFID readers in India. Commercial customs clearance requires a valid ETA certificate demonstrating that the hardware cannot be software-unlocked to transmit outside the 865–867 MHz window.

A frequent pitfall in Indian supply chain rollouts is deploying imported equipment configured for the US FCC band (902–928 MHz) or European ETSI band (865–868 MHz). Passive UHF tags tuned for US frequencies suffer a 40% to 70% read range degradation when queried at 865 MHz due to antenna impedance mismatch. Furthermore, transmitting on 902–928 MHz in India is illegal and causes harmful interference with licensed GSM/CDMA telecom operators.

To achieve 99.8%+ read rates while maintaining WPC compliance, field engineers should configure reader transmitter attenuation between +27 dBm and +30 dBm, utilize high-rejection bandpass filters tuned to 865–867 MHz, and employ circular polarized antennas tilted at 15-degree inward angles to contain the RF energy strictly within the dock door aperture.