Calculate Vertical 40 Meter Antenna Top Hat

Calculate Vertical 40 Meter Antenna Top Hat



Calculating the vertical 40 meter antenna top hat is crucial for optimizing your antenna’s performance…

  1. Enter the frequency in MHz.
  2. Enter the height in meters.
  3. Click ‘Calculate’.

The formula for calculating the top hat is…

Frequency (MHz) Height (meters) Top Hat (meters)
7.0 10.0 1.2
Frequency (MHz) Average Top Hat (meters)
7.0 1.1
  • Always use a top hat for optimal performance.
  • Consider the surrounding environment…
What is the optimal height for a 40 meter antenna?

It depends on the frequency and other factors…

Vertical 40 meter antenna top hat calculation Antenna top hat calculation results

NTIA Antenna Regulations

FCC Propagation Standards

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