📡
Frequency
1 MHz
Frequency
1 MHz
🧭
Range
1–30 MHz
Range
1–30 MHz
🧩
Band Group
HF (<30 MHz)
Band Group
HF (<30 MHz)
🌐 Summary
1 MHz: Maritime, aeronautical, amateur, broadcast (varies); Broadcasting; Handheld radios, vehicle radios, dispatch equipment
🔍 Explore the full RF Spectrum database
📡 Band & Geometry key
| Field | Value |
|---|---|
| Wavelength (m) | 300 |
| Waveforms | AM, SSB, CW |
| Antenna Form Factor (Typical) | ¼-wave ≈ 7500 cm |
| Band Family | Other |
| Band | HF / MF Band |
| Primary Common Name | 1 MHz Allocation |
| FSPL @ 1 km [dB] | 32.44 |
| FSPL @ 10 km [dB] | 52.44 |
| Fresnel Radius @ 1 km (m) | 273.85324537058 |
| Band Group | HF (<30 MHz) |
| Tax Band Family | MF |
| Tax Band Class | MF (1–3 MHz) |
🧩 Applications & Usage
| Field | Value |
|---|---|
| Primary Application | Maritime, aeronautical, amateur, broadcast (varies) |
| Lower Neighbor Use | Regional variation |
| Upper Neighbor Use | Land mobile / Fixed (VHF low) |
| Typical Services Devices | – |
| Market Common Devices | Handheld radios, vehicle radios, dispatch equipment |
| Refarming Use | No |
| Device Ecosystem Size | Low (<100 models) |
| Device Hotspots (MHz) | 1 |
| Device Category | Specialized Industrial / Scientific Equipment |
| Typical Use Cases | – |
| Modulation (Device) | Varies by device |
| Channel Width (Device) [kHz] | Varies |
| Device Region Profiles | Varies by country / allocation |
| Per-Region EIRP Or Duty (Device) | Varies by regulation |
| Allocation Relevance (Device) | Medium |
| Adjacent-Band Collision Risks (Device) | Low–Moderate |
| Example Devices Or Skus | Specialized Industrial / Scientific Equipment |
| Common Protocols | VHF AM Voice (8.33 kHz); VDL Mode 2 (select freqs); Analog FM (12.5 kHz); DMR; P25 (region); TETRA (region); Marine VHF Voice; DSC (CH70); AIS (162 MHz); Amateur (various modes) |
🗒️ Notes
| Field | Value |
|---|---|
| Receiver Selectivity Notes | ≥40 dB @ ±2.4 kHz |
| Interference Notes | – |
| Compatibility Risk Notes | – |
| Notes | In the MF band near the medium‑wave AM broadcast range (≈530–1700 kHz); famous for nighttime skywave AM reception. |
| Propagation Notes | Strong coverage, good indoor penetration |
⚙️ Technical Rules
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 1 |
| Upper Band Frequency Limit | 30 |
| EIRP Indoor Limits | N/A (licensed; verify national rules) |
| EIRP Outdoor Limits | N/A (licensed; verify national rules) |
| PSD Limit | — |
| Emission Mask Class | HF narrowband/SSB |
| Guardband Minimum [kHz] | 50 |
| Typical Bandwidths | 12.5, 25 kHz |
| Autocalculated Bandlimits | No |
| Typical Bandwidths (Estimated) | 12.5, 25 kHz |
| Max EIRP [dBm] | Varies by regulation |
| Power Source Or Duty Profile (Typical) | – |
| Channelization Plan | – |
| Channelization | AM, SSB, CW |
| Guard Band Requirement | – |
| OOB Emission Limit [dBm/MHz] | -13 (baseline) |
| Spurious Emission Limit (dBm) | -30 (baseline) |
| RX Blocking Min [dBm] | -15 (planning) |
| Duplexing | Half-duplex |
| Duplexing Information | Half-duplex: push-to-talk / single-frequency |
| Uplink Pairing | – |
| Downlink Pairing | – |
| 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 |
|---|---|
| Post Status | publish |
| Tax Service Category | Other / Various |
| Tax License Type | Licensed / Service-Specific |
| Tax Regions | Global / Varies |
| ITU Region 1 | Fixed, Mobile |
| ITU Region 2 | Fixed, Mobile |
| ITU Region 3 | Fixed, Mobile |
| License Type | Land mobile / Fixed service (licensed, often public safety/commercial) |
| Primary Application | Maritime, aeronautical, amateur, broadcast (varies) |
| Primary Services | Broadcasting |
| Spurious Emission [dBm] | -30 (baseline) |
| Lower Neighbor Use | Regional variation |
| Upper Neighbor Use | Land mobile / Fixed (VHF low) |
| Licensing Model | – |
| Typical Services Devices | – |
| US FCC Alloc | -– |
| CA IC Alloc | -– |
| UK Ofcom Alloc | -– |
| US Ref | – |
| Typical Bandwidths | 12.5, 25 kHz |
| Market Licensing Model | Government / Public Safety |
| Market Common Devices | Handheld radios, vehicle radios, dispatch equipment |
| Fresnel Radius (1st, 1 km) [m] | 273.85324537058 |
| Typical Bandwidths (Estimated) | 12.5, 25 kHz |
| Auction Status | Assigned |
| Refarming Use | No |
| Typical Site Spacing km | – / – |
| Device Ecosystem Size | Low (<100 models) |
| Traffic Load Share | Coverage-heavy, low capacity share |
| Device Hotspots (MHz) | 1 |
| Device Category | Specialized Industrial / Scientific Equipment |
| Typical Use Cases | – |
| Typical Center Frequencies [MHz] | – |
| Rule Part (Fcc Or Region) | – |
| Modulation (Device) | Varies by device |
| Channel Width (Device) [kHz] | Varies |
| Device Region Profiles | Varies by country / allocation |
| Per-Region EIRP Or Duty (Device) | Varies by regulation |
| Allocation Relevance (Device) | Medium |
| Adjacent-Band Collision Risks (Device) | Low–Moderate |
| Example Devices Or Skus | Specialized Industrial / Scientific Equipment |
| Antenna Form Factor (Typical) | ¼-wave ≈ 7500 cm |
| Power Source Or Duty Profile (Typical) | – |
🛡️ Regulatory & Neighbors
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 1 |
| Upper Band Frequency Limit | 30 |
| Rx Blocking Min dBm | -15 (planning) |
| Lower Neighbor Use | Regional variation |
| Upper Neighbor Use | Land mobile / Fixed (VHF low) |
| Lower Neighbor Band | – |
| Lower Neighbor Range | – |
| Upper Neighbor Label | Land mobile / Fixed (VHF low) |
| Upper Neighbor Range | 31.000–49.000 MHz |
| Adjacent-Band Collision Risks (Device) | Low–Moderate |
| 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 | – |
| Auction Status | Assigned |
| Guard Or Pair | – |
📈 Market & Measurements
| Field | Value |
|---|---|
| Noise Floor | High atmospheric noise in HF |
| Interference Cases | Atmospheric & man‑made |
| Lower Neighbor Range | – |
| Upper Neighbor Range | 31.000–49.000 MHz |
| Interference Notes | – |
| Market Licensing Model | Government / Public Safety |
| Market Commercial Value | Low |
| Market Common Devices | Handheld radios, vehicle radios, dispatch equipment |
| Market Deployment Density | Medium |
| Noise Floor (Estimated) | High atmospheric noise in HF |
| Market Commercial Value (Estimated) | Low |
| Ecosystem Maturity | Emerging |
| Indoor Penetration | Good |
| Known Interference | No major interference issues noted |
| Device Ecosystem Size | Low (<100 models) |
| Real-World Range (Indoor/Outdoor) | – |
| Antenna Form Factor (Typical) | ¼-wave ≈ 7500 cm |
| Ecosystem Maturity | Emerging |
| Device Ecosystem Size | Low (<100 models) |
| Chipset Availability | Ham radio equipment vendors |
| Operator Deployments | Individual operators worldwide |
| Technology Generations Deployed | Amateur voice/data modes |
| Roaming Support | No |
| Traffic Load Share | Coverage-heavy, low capacity share |
| Indoor Penetration | Good |
| Known Interference | No major interference issues noted |
| Occupancy | Varies by region/time |
| 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) | – |
