📡
Frequency
390 MHz
Frequency
390 MHz
🧭
Range
381–400 MHz
Range
381–400 MHz
🧩
Band Group
UHF (300–1000 MHz)
Band Group
UHF (300–1000 MHz)
🌐 Summary
The 390 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: 390 MHz: Public safety networks, secure government mobile (TETRA/PMR); UHF AM comms, datalinks; Handheld radios, vehicle radios, dispatch equipment; garage door remotes, car key-fobs, remote start.
Often inside 390–395 MHz PPDR/TETRA downlink in Region 1; coordination with adjacent services required.
🔍 Explore the full RF Spectrum database
📡 Band & Geometry key
| Field | Value |
|---|---|
| Wavelength (m) | 0.769 |
| Waveforms | – |
| Antenna Form Factor (Typical) | ¼-wave ≈ 19.2 cm |
| Band Family | LMR/Public Safety |
| Band | PPDR / TETRA (Land mobile) |
| Primary Common Name | Public Protection & Disaster Relief (PPDR), TETRA, Land mobile |
| FSPL @ 1 km [dB] | 84.26129214053 |
| FSPL @ 10 km [dB] | 104.26129214053 |
| Fresnel Radius @ 1 km (m) | 13.867098119521 |
| Band Group | UHF (300–1000 MHz) |
| Tax Band Family | UHF |
| Tax Band Class | UHF/VHF Band |
🧩 Applications & Usage
| Field | Value |
|---|---|
| Primary Application | Public safety networks, secure government mobile (TETRA/PMR) |
| Lower Neighbor Use | Aeronautical radionavigation / Radiolocation (UHF) |
| Upper Neighbor Use | UHF (Land mobile/Fixed) |
| Typical Services Devices | UHF AM comms, datalinks |
| Market Common Devices | Handheld radios, vehicle radios, dispatch equipment |
| Refarming Use | No |
| Device Ecosystem Size | Medium (100–1000 models) |
| Device Hotspots (MHz) | 315, 390, 433.92 |
| Device Category | Garage Door Opener; RKE/Key-Fob; Remote Starter |
| Typical Use Cases | garage door remotes, car key-fobs, remote start |
| Modulation (Device) | OOK/ASK |
| Channel Width (Device) [kHz] | ~10–100 |
| Device Region Profiles | US: 315/390; EU: 433.92; Other: 433.92 |
| Per-Region EIRP Or Duty (Device) | Short bursts only; low EIRP; region-specific limits |
| Allocation Relevance (Device) | SRD/ISM usage permitted for short-range remotes |
| Adjacent-Band Collision Risks (Device) | 433 MHz crowded (weather sensors, hobby RC) |
| Example Devices Or Skus | LiftMaster/Chamberlain 390 series; Genie Intellicode |
| Common Protocols | Analog FM (12.5 kHz); DMR; P25 (region); TETRA (region) |
🗒️ Notes
| Field | Value |
|---|---|
| Receiver Selectivity Notes | – |
| Interference Notes | Coordination with civil allocations at edges |
| Compatibility Risk Notes | – |
| Notes | Often inside 390–395 MHz PPDR/TETRA downlink in Region 1; coordination with adjacent services required. |
| Propagation Notes | Strong coverage, good indoor penetration |
⚙️ Technical Rules
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 381 |
| Upper Band Frequency Limit | 400 |
| EIRP Indoor Limits | Licensed PPDR |
| EIRP Outdoor Limits | Licensed PPDR |
| PSD Limit | — |
| Emission Mask Class | PPDR/TETRA |
| Guardband Minimum [kHz] | 25 |
| Typical Bandwidths | 12.5, 25 kHz |
| Autocalculated Bandlimits | No |
| Typical Bandwidths (Estimated) | 12.5, 25 kHz |
| Max EIRP [dBm] | Short bursts only; low EIRP; region-specific limits |
| Power Source Or Duty Profile (Typical) | Coin-cell burst transmit |
| Channelization Plan | 12.5, 25 kHz |
| Channelization | – |
| Guard Band Requirement | Minimal (kHz-level) |
| 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] | 30–50 dBm typical |
| 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 | Part 15 Remote |
🌎 Country Overrides
| Field | Value |
|---|---|
| Tax Service Category | Other / Various |
| Tax License Type | Licensed / Service-Specific |
| Tax Regions | Global / Varies |
| ITU Region 1 | Land mobile |
| ITU Region 2 | Land mobile |
| ITU Region 3 | Land mobile |
| License Type | Licensed public safety (PPDR/TETRA) |
| Primary Application | Public safety networks, secure government mobile (TETRA/PMR) |
| Primary Services | – |
| Spurious Emission [dBm] | -30 (baseline) |
| Lower Neighbor Use | Aeronautical radionavigation / Radiolocation (UHF) |
| Upper Neighbor Use | UHF (Land mobile/Fixed) |
| Licensing Model | Licensed (Military aeronautical) |
| Typical Services Devices | UHF AM comms, datalinks |
| 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] | 13.867098119521 |
| Typical Bandwidths (Estimated) | 12.5, 25 kHz |
| Auction Status | Assigned |
| Refarming Use | No |
| Typical Site Spacing km | 4 / 12 |
| Device Ecosystem Size | Medium (100–1000 models) |
| Traffic Load Share | Coverage-heavy, low capacity share |
| Device Hotspots (MHz) | 315, 390, 433.92 |
| Device Category | Garage Door Opener; RKE/Key-Fob; Remote Starter |
| Typical Use Cases | garage door remotes, car key-fobs, remote start |
| Typical Center Frequencies [MHz] | 315; 390; 433.92 |
| Rule Part (Fcc Or Region) | FCC Part 15.231 (remotes) |
| Modulation (Device) | OOK/ASK |
| Channel Width (Device) [kHz] | ~10–100 |
| Device Region Profiles | US: 315/390; EU: 433.92; Other: 433.92 |
| Per-Region EIRP Or Duty (Device) | Short bursts only; low EIRP; region-specific limits |
| Allocation Relevance (Device) | SRD/ISM usage permitted for short-range remotes |
| Adjacent-Band Collision Risks (Device) | 433 MHz crowded (weather sensors, hobby RC) |
| Example Devices Or Skus | LiftMaster/Chamberlain 390 series; Genie Intellicode |
| Antenna Form Factor (Typical) | ¼-wave ≈ 19.2 cm |
| Power Source Or Duty Profile (Typical) | Coin-cell burst transmit |
🛡️ Regulatory & Neighbors
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 381 |
| Upper Band Frequency Limit | 400 |
| Rx Blocking Min dBm | -15 (planning) |
| Lower Neighbor Use | Aeronautical radionavigation / Radiolocation (UHF) |
| Upper Neighbor Use | UHF (Land mobile/Fixed) |
| Lower Neighbor Band | Aeronautical radionavigation / Radiolocation (UHF) |
| Lower Neighbor Range | 331.000–380.000 MHz |
| Upper Neighbor Label | UHF (Land mobile/Fixed) |
| Upper Neighbor Range | 401.000–430.000 MHz |
| Adjacent-Band Collision Risks (Device) | 433 MHz crowded (weather sensors, hobby RC) |
| Real-World Range (Indoor/Outdoor) | Indoor: ~10–30 m; Outdoor: ~30–100 m (line-of-sight) |
| 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 | -110 dBm (est.) |
| Interference Cases | – |
| Lower Neighbor Range | 331.000–380.000 MHz |
| Upper Neighbor Range | 401.000–430.000 MHz |
| Interference Notes | Coordination with civil allocations at edges |
| 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) | -110 dBm (est.) |
| Market Commercial Value (Estimated) | Low |
| Ecosystem Maturity | Established |
| Indoor Penetration | Good |
| Known Interference | Adjacent channel & intermodulation interference risk |
| Device Ecosystem Size | Medium (100–1000 models) |
| Real-World Range (Indoor/Outdoor) | Indoor: ~10–30 m; Outdoor: ~30–100 m (line-of-sight) |
| Antenna Form Factor (Typical) | ¼-wave ≈ 19.2 cm |
| Ecosystem Maturity | Established |
| Device Ecosystem Size | Medium (100–1000 models) |
| Chipset Availability | Specialized vendors (Motorola, Airbus) |
| Operator Deployments | Regional/national public safety agencies |
| Technology Generations Deployed | LMR / TETRA digital voice |
| Roaming Support | No |
| Traffic Load Share | Coverage-heavy, low capacity share |
| Indoor Penetration | Good |
| Known Interference | Adjacent channel & intermodulation interference risk |
| Occupancy | Medium |
| Occupancy Bucket Pct | 10–30% |
| Latency Profile | <300 ms |
| Common Channels Or Profiles | US: 315 / 390 MHz; EU/Global: 433.92 MHz |
| Security Features | rolling code (e.g., KeeLoq), proprietary |
| Lbt Or Fhss Requirement | No LBT; short bursts; timing constraints |
| Popularity (Installed Base) | High |
| Coexistence Tips | Keep antennas clear; avoid continuous TX; separate receivers from noisy SMPS |
| Latency Class | Burst/Low-latency |
| Device Hotspots (Scoped && Tagged) | US (Region 2): 390 |
