FR1-NTN · FDD · Release 19 reference
5G NR n253 frequencies and NR-ARFCN ranges
5G NR n253 is FDD (FR1-NTN): downlink 1518–1525 MHz, uplink 1668–1675 MHz. View exact NR-ARFCN ranges, rasters and specification notes.
- downlink
- 1518–1525 MHz
- uplink
- 1668–1675 MHz
Band-specific conditions
- Satellite access (NTN); requires a satellite-capable configuration and the applicable regional conditions.
Channel reference ranges
| Direction | Raster / condition | First channel | Step | Last channel |
|---|---|---|---|---|
| downlink | 100 kHz | 303600 | 20 | 305000 |
| downlink | 10 kHz (enhanced) | 303600 | 2 | 305000 |
| uplink | 100 kHz | 333600 | 20 | 335000 |
| uplink | 10 kHz (enhanced) | 333600 | 2 | 335000 |
Inclusive endpoints describe the reference grid. A usable carrier must also satisfy bandwidth, edge clearance, subcarrier spacing, synchronization raster, equipment and band-specific requirements. Enhanced rasters require corresponding support. Allocation edges are not automatically usable centre frequencies.
Worked downlink conversion
NR-ARFCN 304300 maps to 1521.5 MHz.
F_REF = F_offset + ΔF_global × (N_REF − N_offset). Below 3000 MHz use (0 MHz, 5 kHz, 0); from 3000 MHz use (3000 MHz, 15 kHz, 600000); from 24250.08 MHz use (24250.08 MHz, 60 kHz, 2016667). The band raster is an additional constraint on that global grid.
Open 5G NR n253 in the NR-ARFCN calculator
Electrical length and propagation example
At 1521.5 MHz, the free-space wavelength is 19.704 cm, the half-wave length is 9.852 cm and the quarter-wave length is 4.926 cm. Free-space path loss over 1 km is 96.093 dB.
These are reference calculations, not an antenna cut length or coverage prediction. Add feeder losses, antenna gains and propagation effects in the full link budget. A band match does not identify an operator or grant permission to transmit.
Sources and version
3GPP TS 38.101-5 V19.5.0 (Release 19, August 2026), tables 5.2.2-1, 5.2.3-1 and 5.4.2.3-1 through 5.4.2.3-3. Dataset 3gpp-rel19-2026-10-01; checked 2026-10-01. This page records that specification version rather than implying support in every device or country.
Bands with overlapping allocations
At least one corresponding uplink or downlink range overlaps; this does not imply equipment compatibility.