📡
Frequency
674 MHz
Frequency
674 MHz
🧭
Range
600–698 MHz
Range
600–698 MHz
🧩
Band Group
UHF (300–1000 MHz)
Band Group
UHF (300–1000 MHz)
🌐 Summary
The 674 MHz allocation is part of the UHF (300–1000 MHz) spectrum. This range is used worldwide for critical applications that keep our communications and infrastructure running smoothly. On this page we highlight how each band is applied in real systems, from regulatory assignments to everyday devices. Our goal is to make spectrum data clear and practical for engineers, regulators, and enthusiasts alike.
Key uses of this band include: 674 MHz: UHF TV broadcasting; many countries repurposed to 600 MHz mobile broadband (digital dividend).; Broadcasting, Mobile; UHF TV / 600 MHz IMT; TV receivers, IMT devices.
600‑MHz mobile uplink (Band 71 UL 663–698 MHz in US/Canada); handset transmissions, licensed mobile services.
🔍 Explore the full RF Spectrum database
📡 Band & Geometry key
| Field | Value |
|---|---|
| Wavelength (m) | 0.445 |
| Waveforms | Digital TV (ATSC/DVB/ISDB); LTE/NR 5G (Band 71) |
| Antenna Form Factor (Typical) | ¼-wave ≈ 11.1 cm |
| Band Family | Broadcast |
| Band | UHF TV / Mobile broadband (digital dividend) |
| Primary Common Name | Broadcasting (TV) / IMT (600 MHz band) |
| FSPL @ 1 km [dB] | 89.013197930706 |
| FSPL @ 10 km [dB] | 109.01319793071 |
| Fresnel Radius @ 1 km (m) | 10.548432878953 |
| Band Group | UHF (300–1000 MHz) |
| Tax Band Family | UHF |
| Tax Band Class | UHF TV (614 MHz – 698 MHz) |
🧩 Applications & Usage
| Field | Value |
|---|---|
| Primary Application | UHF TV broadcasting; many countries repurposed to 600 MHz mobile broadband (digital dividend). |
| Lower Neighbor Use | UHF Broadcast TV / Land mobile (regional) |
| Upper Neighbor Use | 700/800 MHz Mobile (IMT) + Public Safety |
| Typical Services Devices | UHF TV / 600 MHz IMT |
| Market Common Devices | TV receivers, IMT devices |
| Refarming Use | No |
| Device Ecosystem Size | Medium |
| Device Hotspots (MHz) | 614, 650, 692 |
| Device Category | Wireless Microphones / Intercom |
| Typical Use Cases | – |
| Modulation (Device) | FM (wideband) / Digital Mic Links |
| Channel Width (Device) [kHz] | 200 |
| Device Region Profiles | UHF TV in many countries; mics permitted in subsets |
| Per-Region EIRP Or Duty (Device) | Wireless mics: typically 10–50 mW |
| Allocation Relevance (Device) | Medium (audio production) |
| Adjacent-Band Collision Risks (Device) | Moderate: DTV, mic intermod |
| Example Devices Or Skus | Wireless Microphones, TV Broadcast |
| Common Protocols | LTE; 5G NR; GSM/EDGE; UMTS (legacy); Digital Terrestrial TV (ATSC/DVB-T) |
🗒️ Notes
| Field | Value |
|---|---|
| Receiver Selectivity Notes | – |
| Interference Notes | Guard bands; DTT protection; L‑MICs |
| Compatibility Risk Notes | – |
| Notes | 600‑MHz mobile uplink (Band 71 UL 663–698 MHz in US/Canada); handset transmissions, licensed mobile services. |
| Propagation Notes | Strong coverage, good indoor penetration |
⚙️ Technical Rules
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 600 |
| Upper Band Frequency Limit | 698 |
| EIRP Indoor Limits | UE uplink ≤23 dBm typical |
| EIRP Outdoor Limits | UE uplink ≤23 dBm typical |
| PSD Limit | 3GPP UE mask |
| Emission Mask Class | 3GPP Band 71 UL |
| Guardband Minimum [kHz] | 5000 |
| Typical Bandwidths | 5, 10, 20 MHz |
| Autocalculated Bandlimits | No |
| Typical Bandwidths (Estimated) | 5, 10, 20 MHz |
| Max EIRP [dBm] | Wireless mics: typically 10–50 mW |
| Power Source Or Duty Profile (Typical) | – |
| Channelization Plan | 5, 10, 20 MHz |
| Channelization | TV channels (6–8 MHz); LTE/NR 5 MHz blocks |
| Guard Band Requirement | – |
| OOB Emission Limit [dBm/MHz] | -13 (baseline) |
| Spurious Emission Limit (dBm) | -30 (baseline) |
| RX Blocking Min [dBm] | -15 (planning) |
| Duplexing | FDD (600 MHz band in Region 2); N/A for broadcast |
| Duplexing Information | FDD: 617–652 MHz (uplink, Region 2 IMT) uplink / 663–698 MHz (downlink, Region 2 IMT) downlink |
| Uplink Pairing | 617–652 MHz (uplink, Region 2 IMT) |
| Downlink Pairing | 663–698 MHz (downlink, Region 2 IMT) |
| Paired Band Info | – |
| Max EIRP [dBm] | – |
| Channelization Block Size | – |
| 3GPP Band Number | |
| Example 3GPP Bands | – |
| LTE Uplink Bands | – |
| LTE Downlink Bands | – |
| NR Uplink Bands | – |
| NR Downlink Bands | – |
| Guard Bands | – |
| Protocol Or Standard | – |
🌎 Country Overrides
| Field | Value |
|---|---|
| Tax Service Category | Other / Various |
| Tax License Type | Licensed (Exclusive / Auctioned) |
| Tax Regions | Global / Varies |
| ITU Region 1 | Broadcasting |
| ITU Region 2 | Broadcasting, Mobile (IMT) |
| ITU Region 3 | Broadcasting, Mobile (IMT) |
| License Type | Broadcast (licensed); Mobile broadband IMT (licensed, regional) |
| Primary Application | UHF TV broadcasting; many countries repurposed to 600 MHz mobile broadband (digital dividend). |
| Primary Services | Broadcasting, Mobile |
| Spurious Emission [dBm] | -30 (baseline) |
| Lower Neighbor Use | UHF Broadcast TV / Land mobile (regional) |
| Upper Neighbor Use | 700/800 MHz Mobile (IMT) + Public Safety |
| Licensing Model | Licensed (Broadcasting/IMT – regional) |
| Typical Services Devices | UHF TV / 600 MHz IMT |
| US FCC Alloc | 600 MHz (Broadcast/White Space/IMT transition)– |
| CA IC Alloc | 600 MHz DTV/IMT transition– |
| UK Ofcom Alloc | 700 MHz clearance (legacy TV)– |
| US Ref | – |
| Typical Bandwidths | 5, 10, 20 MHz |
| Market Licensing Model | Transition (Broadcast/IMT) |
| Market Common Devices | TV receivers, IMT devices |
| Fresnel Radius (1st, 1 km) [m] | 10.548432878953 |
| Typical Bandwidths (Estimated) | 5, 10, 20 MHz |
| Auction Status | – |
| Refarming Use | No |
| Typical Site Spacing km | 2 / 8 |
| Device Ecosystem Size | Medium |
| Traffic Load Share | Coverage-heavy, low capacity share |
| Device Hotspots (MHz) | 614, 650, 692 |
| Device Category | Wireless Microphones / Intercom |
| Typical Use Cases | – |
| Typical Center Frequencies [MHz] | – |
| Rule Part (Fcc Or Region) | – |
| Modulation (Device) | FM (wideband) / Digital Mic Links |
| Channel Width (Device) [kHz] | 200 |
| Device Region Profiles | UHF TV in many countries; mics permitted in subsets |
| Per-Region EIRP Or Duty (Device) | Wireless mics: typically 10–50 mW |
| Allocation Relevance (Device) | Medium (audio production) |
| Adjacent-Band Collision Risks (Device) | Moderate: DTV, mic intermod |
| Example Devices Or Skus | Wireless Microphones, TV Broadcast |
| Antenna Form Factor (Typical) | ¼-wave ≈ 11.1 cm |
| Power Source Or Duty Profile (Typical) | – |
🛡️ Regulatory & Neighbors
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 600 |
| Upper Band Frequency Limit | 698 |
| Rx Blocking Min dBm | -15 (planning) |
| Lower Neighbor Use | UHF Broadcast TV / Land mobile (regional) |
| Upper Neighbor Use | 700/800 MHz Mobile (IMT) + Public Safety |
| Lower Neighbor Band | UHF Broadcast TV / Land mobile (regional) |
| Lower Neighbor Range | 513.000–600.000 MHz |
| Upper Neighbor Label | 700/800 MHz Mobile (IMT) + Public Safety |
| Upper Neighbor Range | 699.000–806.000 MHz |
| Adjacent-Band Collision Risks (Device) | Moderate: DTV, mic intermod |
| Real-World Range (Indoor/Outdoor) | – |
| US FCC Alloc | 600 MHz (Broadcast/White Space/IMT transition)600 MHz (Broadcast/White Space/IMT transition) |
| CA IC Alloc | 600 MHz DTV/IMT transition600 MHz DTV/IMT transition |
| UK Ofcom Alloc | 700 MHz clearance (legacy TV)700 MHz clearance (legacy TV) |
| Regulatory References | US: -; CA: -; UK: – |
| Global Harmonization | National-only |
| Crossborder Coordination | High |
| Sharing Mechanism | – |
| Auction Status | – |
| Guard Or Pair | Duplex gap between UL/DL in Region 2 (652–663 MHz) |
📈 Market & Measurements
| Field | Value |
|---|---|
| Noise Floor | Urban RF noise can be high |
| Interference Cases | TV vs IMT coexistence; adjacent channel leakage; passive radio astronomy interference at 608–614 MHz |
| Lower Neighbor Range | 513.000–600.000 MHz |
| Upper Neighbor Range | 699.000–806.000 MHz |
| Interference Notes | Guard bands; DTT protection; L‑MICs |
| Market Licensing Model | Transition (Broadcast/IMT) |
| Market Commercial Value | Medium to High |
| Market Common Devices | TV receivers, IMT devices |
| Market Deployment Density | Dense urban/suburban |
| Noise Floor (Estimated) | Urban RF noise can be high |
| Market Commercial Value (Estimated) | Medium to High |
| Ecosystem Maturity | Emerging |
| Indoor Penetration | Good |
| Known Interference | No major interference issues noted |
| Device Ecosystem Size | Medium |
| Real-World Range (Indoor/Outdoor) | – |
| Antenna Form Factor (Typical) | ¼-wave ≈ 11.1 cm |
| Ecosystem Maturity | Emerging |
| Device Ecosystem Size | Medium |
| Chipset Availability | Limited / TBD |
| Operator Deployments | Limited operators |
| Technology Generations Deployed | Multiple / TBD |
| Roaming Support | – |
| Traffic Load Share | Coverage-heavy, low capacity share |
| Indoor Penetration | Good |
| Known Interference | No major interference issues noted |
| Occupancy | High in TV markets; increasing IMT occupancy |
| Occupancy Bucket Pct | 10–30% |
| Latency Profile | – |
| Common Channels Or Profiles | – |
| Security Features | – |
| Lbt Or Fhss Requirement | – |
| Popularity (Installed Base) | – |
| Coexistence Tips | – |
| Latency Class | – |
| Device Hotspots (Scoped && Tagged) | – |
