📡
Frequency
1443 MHz
Frequency
1443 MHz
🧭
Range
1427–1452 MHz
Range
1427–1452 MHz
🧩
Band Group
L‑Band Active (1433–1449 MHz) — Fixed/Mobile (national variations)
Band Group
L‑Band Active (1433–1449 MHz) — Fixed/Mobile (national variations)
🌐 Summary
The 1443 MHz allocation is part of the L‑Band Active (1433–1449 MHz) — Fixed/Mobile (national variations) 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: L‑band active segment used for fixed/mobile/telemetry (national variations). Strict protection is required for the passive 1401–1427 MHz band below; apply tight OOBE and guard-band planning near 1427 MHz..
Protect passive 1401–1427 MHz; confirm national band plans before deployment
🔍 Explore the full RF Spectrum database
📡 Band & Geometry key
| Field | Value |
|---|---|
| Wavelength (m) | 0.207756 |
| Waveforms | FM/NFM, FSK/4FSK, QPSK; telemetry/proprietary; occasional wideband data |
| Antenna Form Factor (Typical) | Yagi/sector/panel for links; compact telemetry antennas |
| Band Family | Mobile / Fixed Service L‑Band |
| Band | 1427–1452 MHz Telemetry, MBANS, and Fixed/Mobile Links (Region-dependent) |
| Primary Common Name | L-band |
| FSPL @ 1 km [dB] | 95.63 |
| FSPL @ 10 km [dB] | 115.63 |
| Fresnel Radius @ 1 km (m) | 7.207 |
| Band Group | L‑Band Active (1433–1449 MHz) — Fixed/Mobile (national variations) |
| Tax Band Family | UHF/L-band Transition |
| Tax Band Class | 1428 MHz – 1452 MHz UHF/L-band Transition Passive Mobile / Telemetry / MBANS |
🧩 Applications & Usage
| Field | Value |
|---|---|
| Primary Application | Mobile Broadband, Wireless Telemetry (aeronautical, industrial), and MBANS (Medical Body Area Networks) |
| Lower Neighbor Use | Passive EESS/RAS (1401–1427 MHz) — strongest protection |
| Upper Neighbor Use | Active services above 1452 MHz (region-dependent) |
| Typical Services Devices | – |
| Market Common Devices | LMR handhelds/base, telemetry RTUs, fixed-link radios |
| Refarming Use | Under study (FWA/utility) |
| Device Ecosystem Size | Small / specialized |
| Device Hotspots (MHz) | – |
| Device Category | Telemetry / Fixed Wireless |
| Typical Use Cases | Flight-test telemetry; FWA backhaul; industrial links |
| Modulation (Device) | – |
| Channel Width (Device) [kHz] | – |
| Device Region Profiles | – |
| Per-Region EIRP Or Duty (Device) | – |
| Allocation Relevance (Device) | High (core aero telemetry) |
| Adjacent-Band Collision Risks (Device) | High – protect 1401–1427 MHz passive services |
| Example Devices Or Skus | – |
| Common Protocols | NFM, FSK/4FSK, QPSK; proprietary telemetry |
🗒️ Notes
| Field | Value |
|---|---|
| Receiver Selectivity Notes | High-selectivity front-ends; SAW/Cavity filtering |
| Interference Notes | – |
| Compatibility Risk Notes | High risk to passive band if OOBE insufficient; plan guards and filters |
| Notes | Protect passive 1401–1427 MHz; confirm national band plans before deployment |
| Propagation Notes | LOS planning with directional antennas recommended |
⚙️ Technical Rules
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 1427 |
| Upper Band Frequency Limit | 1452 |
| EIRP Indoor Limits | – |
| EIRP Outdoor Limits | – |
| PSD Limit | – |
| Emission Mask Class | Telemetry/NB mask (Class B) |
| Guardband Minimum [kHz] | – |
| Typical Bandwidths | Narrowband 12.5/25 kHz; wider channels 200 kHz–5 MHz (where allowed) |
| Autocalculated Bandlimits | 1427.0–1452.0 MHz |
| Typical Bandwidths (Estimated) | Narrowband 12.5/25 kHz; wider channels 200 kHz–5 MHz (where allowed) |
| Max EIRP [dBm] | – |
| Power Source Or Duty Profile (Typical) | Varies: utility telemetry low duty; fixed links continuous |
| Channelization Plan | Region-specific telemetry blocks; 1430–1452 MHz common core |
| Channelization | National channel plans; telemetry/utility segments; PPDR/PMR in some countries |
| Guard Band Requirement | As per national plan; maintain protection to 1401–1427 MHz |
| OOB Emission Limit [dBm/MHz] | – |
| Spurious Emission Limit (dBm) | – |
| RX Blocking Min [dBm] | – |
| Duplexing | Varies (simplex/duplex) |
| Duplexing Information | Simplex links, split repeater offsets, or paired channels per national plan |
| Uplink Pairing | Not universally paired; per national plan |
| Downlink Pairing | Not universally paired; per national plan |
| Paired Band Info | Varies by country |
| Max EIRP [dBm] | – |
| Channelization Block Size | 5–20 MHz |
| 3GPP Band Number | |
| Example 3GPP Bands | None (non‑3GPP) |
| LTE Uplink Bands | – |
| LTE Downlink Bands | – |
| NR Uplink Bands | – |
| NR Downlink Bands | – |
| Guard Bands | Use ≥1–2 MHz guard band near 1427 MHz; maintain frequency separation between co-located telemetry systems. |
| Protocol Or Standard | – |
🌎 Country Overrides
| Field | Value |
|---|---|
| Tax Service Category | Fixed / Mobile / Biomedical Telemetry |
| Tax License Type | Licensed / Coordinated (national plans) |
| Tax Regions | Global (ITU Regions 1/2/3) — national variations |
| ITU Region 1 (Europe, Africa, Middle East (west of Persian Gulf), Western Russia & Mongolia) | Region 1 (EMEA): Fixed/Mobile allocations common; protect 1401–1427 MHz passive below; national variations. |
| ITU Region 2 (North America, South America, Central America, Caribbean, Greenland, Eastern Pacific Islands (Americas region)) | Region 2 (Americas): Fixed/Mobile/telemetry allocations may apply; guard the passive band below; national rules vary. |
| ITU Region 3 (Asia, Australia, Pacific Islands, Oceania, Indian Subcontinent, East Asia & Southeast Asia) | Region 3 (APAC): Mix of fixed/mobile/utility links; protect passive below; observe national plans. |
| License Type | Licensed / Regionally Authorized (Shared and Primary allocations) |
| Primary Application | Mobile Broadband, Wireless Telemetry (aeronautical, industrial), and MBANS (Medical Body Area Networks) |
| Primary Services | Fixed, Mobile, Telemetry, MBANS (in selected regions); secondary to passive EESS/RAS above 1427 MHz |
| Spurious Emission [dBm] | – |
| Lower Neighbor Use | Passive EESS/RAS (1401–1427 MHz) — strongest protection |
| Upper Neighbor Use | Active services above 1452 MHz (region-dependent) |
| Licensing Model | Licensed or lightly-licensed depending on region; MBANS and telemetry allocations vary by national authority. |
| Typical Services Devices | – |
| US FCC Alloc | Fixed/Mobile (national variations); coordination required; protect passive band below– |
| CA IC Alloc | Fixed/Mobile (national variations); coordination and OOBE control required– |
| UK Ofcom Alloc | Fixed/Mobile (national variations); coordination as per Ofcom plans– |
| US Ref | – |
| Typical Bandwidths | Narrowband 12.5/25 kHz; wider channels 200 kHz–5 MHz (where allowed) |
| Market Licensing Model | Partial commercial use; shared industrial and healthcare telemetry spectrum. |
| Market Common Devices | LMR handhelds/base, telemetry RTUs, fixed-link radios |
| Fresnel Radius (1st, 1 km) [m] | 7.207 |
| Typical Bandwidths (Estimated) | Narrowband 12.5/25 kHz; wider channels 200 kHz–5 MHz (where allowed) |
| Auction Status | Varies by nation (assigned/licensed) |
| Refarming Use | Under study (FWA/utility) |
| Typical Site Spacing km | 1–10 km (LMR/telemetry); fixed links point‑to‑point / 5–50 km (LMR/telemetry); long hops for fixed links |
| Device Ecosystem Size | Small / specialized |
| Traffic Load Share | <1% of L-band traffic |
| Device Hotspots (MHz) | – |
| Device Category | Telemetry / Fixed Wireless |
| Typical Use Cases | Flight-test telemetry; FWA backhaul; industrial links |
| Typical Center Frequencies [MHz] | – |
| Rule Part (Fcc Or Region) | – |
| Modulation (Device) | – |
| Channel Width (Device) [kHz] | – |
| Device Region Profiles | – |
| Per-Region EIRP Or Duty (Device) | – |
| Allocation Relevance (Device) | High (core aero telemetry) |
| Adjacent-Band Collision Risks (Device) | High – protect 1401–1427 MHz passive services |
| Example Devices Or Skus | – |
| Antenna Form Factor (Typical) | Yagi/sector/panel for links; compact telemetry antennas |
| Power Source Or Duty Profile (Typical) | Varies: utility telemetry low duty; fixed links continuous |
🛡️ Regulatory & Neighbors
| Field | Value |
|---|---|
| Lower Band Frequency Limit | 1427 |
| Upper Band Frequency Limit | 1452 |
| Rx Blocking Min dBm | – |
| Lower Neighbor Use | Passive EESS/RAS (1401–1427 MHz) — strongest protection |
| Upper Neighbor Use | Active services above 1452 MHz (region-dependent) |
| Lower Neighbor Band | Passive EESS/RAS |
| Lower Neighbor Range | 1401–1427 MHz |
| Upper Neighbor Label | Active Services |
| Upper Neighbor Range | ≥1452 MHz (varies by region) |
| Adjacent-Band Collision Risks (Device) | High – protect 1401–1427 MHz passive services |
| Real-World Range (Indoor/Outdoor) | 1–50 km depending on EIRP and height |
| US FCC Alloc | Fixed/Mobile (national variations); coordination required; protect passive band belowFixed/Mobile (national variations); coordination required; protect passive band below |
| CA IC Alloc | Fixed/Mobile (national variations); coordination and OOBE control requiredFixed/Mobile (national variations); coordination and OOBE control required |
| UK Ofcom Alloc | Fixed/Mobile (national variations); coordination as per Ofcom plansFixed/Mobile (national variations); coordination as per Ofcom plans |
| Regulatory References | US: -; CA: -; UK: – |
| Global Harmonization | Partial; national differences significant |
| Crossborder Coordination | – |
| Sharing Mechanism | Time/frequency coordination for telemetry users; geographic separation for MBANS and industrial telemetry; dynamic spectrum access frameworks under test in some regions. |
| Auction Status | Varies by nation (assigned/licensed) |
| Guard Or Pair | Guard toward 1401–1427 MHz passive band; manage duplex splits where used |
📈 Market & Measurements
| Field | Value |
|---|---|
| Noise Floor | Typical land-mobile assumptions; manage self-interference in dense deployments |
| Interference Cases | Leakage into passive band; co-channel/adjacent mobile/fixed links |
| Lower Neighbor Range | 1401–1427 MHz |
| Upper Neighbor Range | ≥1452 MHz (varies by region) |
| Interference Notes | – |
| Market Licensing Model | Partial commercial use; shared industrial and healthcare telemetry spectrum. |
| Market Commercial Value | Moderate; valuable for utilities/LMR |
| Market Common Devices | LMR handhelds/base, telemetry RTUs, fixed-link radios |
| Market Deployment Density | Urban utility density moderate; rural sparse |
| Noise Floor (Estimated) | Typical land-mobile assumptions; manage self-interference in dense deployments |
| Market Commercial Value (Estimated) | Moderate; valuable for utilities/LMR |
| Ecosystem Maturity | Established for aerospace; limited consumer ecosystem |
| Indoor Penetration | Moderate (~8 dB wall loss typical) |
| Known Interference | Potential interference to passive services below 1427 MHz; coordination required to protect EESS (passive) receivers; interference among telemetry systems possible without channel management. |
| Device Ecosystem Size | Small / specialized |
| Real-World Range (Indoor/Outdoor) | 1–50 km depending on EIRP and height |
| Antenna Form Factor (Typical) | Yagi/sector/panel for links; compact telemetry antennas |
| Ecosystem Maturity | Established for aerospace; limited consumer ecosystem |
| Device Ecosystem Size | Small / specialized |
| Chipset Availability | Custom telemetry silicon; limited COTS |
| Operator Deployments | Defense, aerospace, utilities |
| Technology Generations Deployed | Proprietary / non-3GPP |
| Roaming Support | None (closed networks) |
| Traffic Load Share | <1% of L-band traffic |
| Indoor Penetration | Moderate (~8 dB wall loss typical) |
| Known Interference | Potential interference to passive services below 1427 MHz; coordination required to protect EESS (passive) receivers; interference among telemetry systems possible without channel management. |
| Occupancy | Moderate (utility/LMR/telemetry) — depends on country |
| Occupancy Bucket Pct | Varies by country |
| Latency Profile | Low-latency telemetry (<10 ms typical) |
| Common Channels Or Profiles | – |
| Security Features | Encrypted links; authentication |
| Lbt Or Fhss Requirement | – |
| Popularity (Installed Base) | Low-volume / high-value |
| Coexistence Tips | Tight OOBE masks; cavity/SAW filters; directional antennas; site coordination |
| Latency Class | Low-latency for telemetry/LMR; depends on system |
| Device Hotspots (Scoped && Tagged) | Edge segments near 1428–1432 for telemetry in some nations |