VHF / Radio Range Estimator

Radio System Parameters

Your Station

Your Antenna Height

Height above water level.

Your Transmit Power

watts

VHF radio output power (1-25W typical).

Your Antenna Gain

dBi

Antenna gain in dBi (typically 0-6 dBi for marine VHF).

Remote Station

Remote Antenna Height

Height of shore station or other vessel antenna.

Remote Station Type

Affects typical antenna height and power.

Environmental Conditions

Atmospheric Conditions

Affects radio wave propagation.

Terrain Type

Affects signal obstruction and reflection.

Range Analysis Results

Line of Sight

nautical miles

Practical Range

nautical miles

Communication Range Visualization

Your Boat

Shore

0 nm

Signal Strength vs Distance

Radio Performance Analysis

Horizon Distance: 0 nm

Path Loss: 0 dB

Fresnel Zone: 0% clear

Link Margin: 0 dB

Reliability: 0%

Max Theoretical: 0 nm

Based on VHF marine band propagation characteristics and line-of-sight calculations.

Communication Assessment

Communication quality: Excellent

DSC alert capability: Reliable within range

Recommendation: Normal VHF operation suitable