Engineering reference · source verified
3450 MHz frequency reference
3450 MHz maps to NR-ARFCN 630000 and falls inside both n77 and n78 TDD bands. It also falls within LTE Band 42 at EARFCN 42090.
| Frequency | 3450 MHz / 3.45 GHz |
|---|---|
| NR bands | n77 and n78 / TDD |
| NR-ARFCN | 630000 |
| LTE band | 42 / TDD |
| LTE EARFCN | 42090 |
| Direction | Shared TDD uplink/downlink |
Electrical lengths at 3450 MHz
- Wavelength
- 8.690 cm
- Half wave
- 4.345 cm
- Quarter wave
- 2.172 cm
λ = 299,792,458 / f_Hz. Free-space values; antenna end effects and propagation velocity change physical lengths.
Worked channel conversion
NR N_REF = 600000 + (3450 − 3000)/0.015 = 630000. LTE Band 42: N = 41590 + (3450 − 3400)/0.1 = 42090.
Propagation example
At 3450 MHz over 1 km, free-space path loss is 103.204 dB. This assumes far-field, unobstructed propagation. Antenna gain, cable loss, obstructions and fading belong in the full link budget.
Assumptions and limits
These are channel reference points. A complete radio configuration also needs supported bandwidth, guard bands, subcarrier spacing and device capabilities. Band membership does not show operator use or permission to transmit. See the LTE and NR directories for the full versioned band catalogue.
Sources and citation
Dataset: rf-reference-2026-10-01. Fixed specification versions, not a claim to cover the latest releases. Calculations are generated from reviewed values.
- 3GPP TS 38.104 V16.4.0, tables 5.2-1, 5.4.2.1-1 and 5.4.2.3-1
- 3GPP TS 36.101 V12.16.0, tables 5.5-1 and 5.7.3-1
- NIST speed of light definition
Cite “RF Utility — 3450 MHz frequency reference”, rf-reference-2026-10-01, with this permanent URL and your access date.