49 MHz β€” Band & Applications

πŸ“‘

Frequency
49 MHz
🧭

Range
30–50 MHz
🧩

Band Group
VHF (30–300 MHz)

🌐 Summary

49 MHz: Public safety, utilities, legacy FM narrowband; Handheld radios, vehicle radios, dispatch equipment

Part 15 devices/baby monitors/toys commonly use 49.82–49.90 MHz; legacy 49 MHz cordless phones overlapped these channels.

Land mobile / Fixed (VHF low) band overview (Mobitex)
VHF Low Band Overview

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πŸ“‘ Band & Geometry key

Field Value
Wavelength (m) 6.122
Waveforms
Antenna Form Factor (Typical) ΒΌ-wave β‰ˆ 153 cm
Band Family LMR/Public Safety
Band Land mobile / Fixed (VHF low)
Primary Common Name Land mobile / Fixed (VHF low)
FSPL @ 1 km [dB] 66.24392160057
FSPL @ 10 km [dB] 86.24392160057
Fresnel Radius @ 1 km (m) 39.121892195797
Band Group VHF (30–300 MHz)
Tax Band Family VHF
Tax Band Class VHF Low (30–88)

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🧩 Applications & Usage

Field Value
Primary Application
Lower Neighbor Use HF / MF Band
Upper Neighbor Use 6 m Amateur Band
Typical Services Devices Public safety, utilities, legacy FM narrowband
Market Common Devices Handheld radios, vehicle radios, dispatch equipment
Refarming Use No
Device Ecosystem Size Medium
Device Hotspots (MHz) 49
Device Category Land Mobile Radios
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 VHF Land Mobile Radio
Common Protocols Analog FM (12.5 kHz); DMR; P25 (region); TETRA (region)

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πŸ—’οΈ Notes

Field Value
Receiver Selectivity Notes β‰₯60 dB @ Β±12.5 kHz
Interference Notes Refarming underway in some regions; mixed channelization
Compatibility Risk Notes
Notes Part 15 devices/baby monitors/toys commonly use 49.82–49.90 MHz; legacy 49 MHz cordless phones overlapped these channels.
Propagation Notes Strong coverage, good indoor penetration

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βš™οΈ Technical Rules

Field Value
Lower Band Frequency Limit 30
Upper Band Frequency Limit 50
EIRP Indoor Limits N/A (licensed; verify national rules)
EIRP Outdoor Limits N/A (licensed; verify national rules)
PSD Limit β€”
Emission Mask Class LMR 12.5 kHz NB
Guardband Minimum [kHz] 12.5
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
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

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🌎 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 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 HF / MF Band
Upper Neighbor Use 6 m Amateur Band
Licensing Model Licensed (Land mobile / VHF Low)
Typical Services Devices Public safety, utilities, legacy FM narrowband
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] 39.121892195797
Typical Bandwidths (Estimated) 12.5, 25 kHz
Auction Status Assigned
Refarming Use No
Typical Site Spacing km 5 / 30
Device Ecosystem Size Medium
Traffic Load Share Coverage-heavy, low capacity share
Device Hotspots (MHz) 49
Device Category Land Mobile Radios
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 VHF Land Mobile Radio
Antenna Form Factor (Typical) ΒΌ-wave β‰ˆ 153 cm
Power Source Or Duty Profile (Typical)

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πŸ›‘οΈ Regulatory & Neighbors

Field Value
Lower Band Frequency Limit 30
Upper Band Frequency Limit 50
Rx Blocking Min dBm -15 (planning)
Lower Neighbor Use HF / MF Band
Upper Neighbor Use 6 m Amateur Band
Lower Neighbor Band HF / MF Band
Lower Neighbor Range 28.000–30.000 MHz
Upper Neighbor Label 6 m Amateur Band
Upper Neighbor Range 50.000–54.000 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

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πŸ“ˆ Market & Measurements

Field Value
Noise Floor -105 dBm (est.)
Interference Cases
Lower Neighbor Range 28.000–30.000 MHz
Upper Neighbor Range 50.000–54.000 MHz
Interference Notes Refarming underway in some regions; mixed channelization
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) -105 dBm (est.)
Market Commercial Value (Estimated) Low
Ecosystem Maturity Established
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 153 cm
Ecosystem Maturity Established
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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