149 MHz – Frequency Band & Applications

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Frequency
149 MHz
🧭

Range
148–174 MHz
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Band Group
VHF (30–300 MHz)

🌐 Summary

The 149 MHz allocation is part of the VHF (30–300 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: 149 MHz: Public safety, commercial LMR; Public safety radios, business radios.

VHF‑High LMR/government allocations vary by country (β‰ˆ148–150 MHz).

 VHF Band overview (Mobitex)
VHF Band Overview

πŸ” Explore the full RF Spectrum database

πŸ“‘ Band & Geometry key

Field Value
Wavelength (m) 2.013
Waveforms
Antenna Form Factor (Typical) ΒΌ-wave β‰ˆ 50.3 cm
Band Family LMR/Public Safety
Band Land mobile / Fixed (VHF high)
Primary Common Name Land mobile / Fixed (VHF high)
FSPL @ 1 km [dB] 75.903725368246
FSPL @ 10 km [dB] 95.903725368246
Fresnel Radius @ 1 km (m) 22.434932014531
Band Group VHF (30–300 MHz)
Tax Band Family VHF
Tax Band Class VHF Band

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🧩 Applications & Usage

Field Value
Primary Application
Lower Neighbor Use 2 m Amateur (R2/R3); Land mobile (R1)
Upper Neighbor Use Broadcasting (VHF TV)
Typical Services Devices Public safety, commercial LMR
Market Common Devices Public safety radios, business radios
Refarming Use No
Device Ecosystem Size Medium
Device Hotspots (MHz) 149
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 Analog FM (12.5 kHz); DMR; P25 (region); TETRA (region)

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πŸ—’οΈ Notes

Field Value
Receiver Selectivity Notes
Interference Notes Narrowband FM; region-specific channel plans
Compatibility Risk Notes
Notes VHF‑High LMR/government allocations vary by country (β‰ˆ148–150 MHz).
Propagation Notes Strong coverage, good indoor penetration

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βš™οΈ Technical Rules

Field Value
Lower Band Frequency Limit 148
Upper Band Frequency Limit 174
EIRP Indoor Limits N/A (licensed; verify national rules)
EIRP Outdoor Limits N/A (licensed; verify national rules)
PSD Limit β€”
Emission Mask Class Generic (planning)
Guardband Minimum [kHz] 100
Typical Bandwidths 11–20 kHz
Autocalculated Bandlimits No
Typical Bandwidths (Estimated) 11–20 kHz
Max EIRP [dBm] Varies by regulation
Power Source Or Duty Profile (Typical)
Channelization Plan
Channelization
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 Simplex or paired allocations
Uplink Pairing
Downlink Pairing
Paired Band Info
Max EIRP [dBm]
Channelization Block Size 12.5 / 25 kHz channels
3GPP Band Number
Example 3GPP Bands
LTE Uplink Bands
LTE Downlink Bands
NR Uplink Bands
NR Downlink Bands
Guard Bands Channel guard bands
Protocol Or Standard

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🌎 Country Overrides

Field Value
Tax Service Category Other / Various
Tax License Type Licensed / Service-Specific
Tax Regions Global / Varies
ITU Region 1 Land mobile, Fixed
ITU Region 2 Land mobile, Fixed
ITU Region 3 Land mobile, Fixed
License Type Land mobile / Fixed service (licensed, often public safety/commercial)
Primary Application
Primary Services
Spurious Emission [dBm] -30 (baseline)
Lower Neighbor Use 2 m Amateur (R2/R3); Land mobile (R1)
Upper Neighbor Use Broadcasting (VHF TV)
Licensing Model Licensed (Land mobile)
Typical Services Devices Public safety, commercial LMR
US FCC Alloc -–

CA IC Alloc -–

UK Ofcom Alloc -–

US Ref 47 CFR Part 90 (Private Land Mobile)
Typical Bandwidths 11–20 kHz
Market Licensing Model Licensed (LMR)
Market Common Devices Public safety radios, business radios
Fresnel Radius (1st, 1 km) [m] 22.434932014531
Typical Bandwidths (Estimated) 11–20 kHz
Auction Status
Refarming Use No
Typical Site Spacing km 5 / 30
Device Ecosystem Size Medium
Traffic Load Share Coverage-heavy, low capacity share
Device Hotspots (MHz) 149
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) ΒΌ-wave β‰ˆ 50.3 cm
Power Source Or Duty Profile (Typical)

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πŸ›‘οΈ Regulatory & Neighbors

Field Value
Lower Band Frequency Limit 148
Upper Band Frequency Limit 174
Rx Blocking Min dBm -15 (planning)
Lower Neighbor Use 2 m Amateur (R2/R3); Land mobile (R1)
Upper Neighbor Use Broadcasting (VHF TV)
Lower Neighbor Band 2 m Amateur (R2/R3); Land mobile (R1)
Lower Neighbor Range 147.000–148.000 MHz
Upper Neighbor Label Broadcasting (VHF TV)
Upper Neighbor Range 175.000–215.000 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: 47 CFR Part 90 (Private Land Mobile); CA: ISED RSS‑119 (Land Mobile 27.41–960 MHz); UK: Ofcom PMR/Business Radio (UK FAT)
Global Harmonization Regional
Crossborder Coordination High
Sharing Mechanism
Auction Status
Guard Or Pair

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πŸ“ˆ Market & Measurements

Field Value
Noise Floor -105 dBm (est.)
Interference Cases
Lower Neighbor Range 147.000–148.000 MHz
Upper Neighbor Range 175.000–215.000 MHz
Interference Notes Narrowband FM; region-specific channel plans
Market Licensing Model Licensed (LMR)
Market Commercial Value Medium
Market Common Devices Public safety radios, business radios
Market Deployment Density Dense in urban PS networks
Noise Floor (Estimated) -105 dBm (est.)
Market Commercial Value (Estimated) Medium
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) ΒΌ-wave β‰ˆ 50.3 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 Medium
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) –

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