📡
Frequency
611 MHz
Frequency
611 MHz
🧭
Range
600–698 MHz
Range
600–698 MHz
🧩
Band Group
UHF (300–1000 MHz)
Band Group
UHF (300–1000 MHz)
🌐 Summary
The 611 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: 611 MHz: Passive radio astronomy (Hydrogen line) — globally protected band; Radio astronomy; Smartphones, LTE/5G base stations, CPEs.
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🔍 Explore the full RF Spectrum database
📡 Band & Geometry key
| Field | Value |
|---|---|
| Wavelength (m) | 0.491 |
| Waveforms | Digital TV (ATSC/DVB/ISDB); LTE/NR 5G (Band 71) |
| Antenna Form Factor (Typical) | ¼-wave ≈ 12.3 cm |
| Band Family | Broadcast |
| Band | UHF TV / Mobile broadband (digital dividend) |
| Primary Common Name | Radio astronomy (passive) |
| FSPL @ 1 km [dB] | 88.160824204851 |
| FSPL @ 10 km [dB] | 108.16082420485 |
| Fresnel Radius @ 1 km (m) | 11.078916441844 |
| Band Group | UHF (300–1000 MHz) |
| Tax Band Family | UHF |
| Tax Band Class | RAS/WMTS (608–614) |
🧩 Applications & Usage
| Field | Value |
|---|---|
| Primary Application | Passive radio astronomy (Hydrogen line) — globally protected band |
| Lower Neighbor Use | UHF Broadcast TV / Land mobile (regional) |
| Upper Neighbor Use | 700/800 MHz Mobile (IMT) + Public Safety |
| Typical Services Devices | – |
| Market Common Devices | Smartphones, LTE/5G base stations, CPEs |
| 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 | – |
| Compatibility Risk Notes | – |
| Notes | – |
| Propagation Notes | Strong coverage, good indoor penetration |
⚙️ Technical Rules
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 600 |
| Upper Band Frequency Limit | 698 |
| EIRP Indoor Limits | Prohibited (RAS/WMTS) |
| EIRP Outdoor Limits | Prohibited (RAS/WMTS) |
| PSD Limit | — |
| Emission Mask Class | Channel 37 protected |
| Guardband Minimum [kHz] | 1000 |
| 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] | Ultra‑strict |
| 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 / Service-Specific |
| Tax Regions | Global / Varies |
| ITU Region 1 | Broadcasting |
| ITU Region 2 | Broadcasting, Mobile (IMT) |
| ITU Region 3 | Broadcasting, Mobile (IMT) |
| License Type | Radio astronomy protected (no active allocation) |
| Primary Application | Passive radio astronomy (Hydrogen line) — globally protected band |
| Primary Services | Radio astronomy |
| 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 | – |
| Typical Services Devices | – |
| US FCC Alloc | -– |
| CA IC Alloc | -– |
| UK Ofcom Alloc | -– |
| US Ref | – |
| Typical Bandwidths | 5, 10, 20 MHz |
| Market Licensing Model | Exclusive Licensed |
| Market Common Devices | Smartphones, LTE/5G base stations, CPEs |
| Fresnel Radius (1st, 1 km) [m] | 11.078916441844 |
| Typical Bandwidths (Estimated) | 5, 10, 20 MHz |
| Auction Status | Auctioned |
| 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 ≈ 12.3 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 | — |
| CA IC Alloc | — |
| UK Ofcom Alloc | — |
| Regulatory References | US: -; CA: -; UK: – |
| Global Harmonization | Regional |
| Crossborder Coordination | High |
| Sharing Mechanism | Exclusive licensed |
| Auction Status | Auctioned |
| 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 | – |
| Market Licensing Model | Exclusive Licensed |
| Market Commercial Value | High |
| Market Common Devices | Smartphones, LTE/5G base stations, CPEs |
| Market Deployment Density | High |
| Noise Floor (Estimated) | Urban RF noise can be high |
| Market Commercial Value (Estimated) | High |
| Ecosystem Maturity | Mature |
| 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 ≈ 12.3 cm |
| Ecosystem Maturity | Mature |
| 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) | – |
