What's New

This app has been updated by Apple to display the Apple Watch app icon.

Bug fixes to prevent crashing

App Description

The Maidenhead & HF Beam Antenna is a useful utility to calculate the the Maidenhead LOCATION as well as HF Elements' size in Feet, Inches, and Meters for the Reflector, Driven Element, Director, and Spacing for two and three element beam antennas. Just input the frequency and select the number of elements.

Automated Calculator

• Maidenhead Locator System

Calculators

• HF Beam Antenna with 2 or 3 Elements
• EIRP
• Pure ERP

Area Converters

• Square Inches and Shorter Conversion
• Square Feet & Yards & Meters Conversion

Distance Converters

• Inches & Centimeters & Millimeters Conversion
• Feet & Yards & Meters Conversion
• Nautical Miles, Statue Miles and Kilometers Conversion

Volume Converters

• US/Imperial to Metric Units Conversion
• Metric to US/Imperial Units Conversion
• Inches & Centimeters Volume Conversion
• Feet, Yards, & Meters Volume Conversion

This app features:

• Send your calculations or conversions by email
• Universal App (iPhone, iPod Touch, and iPad)
• Latest version of iOS is supported
• All iPhone screens are supported
• Retina Display graphics
• Fast app switching
• Automatically Saves Your Inputs

No network connectivity required.

iPhone Screenshots

(click to enlarge)

HF Beam Antenna Calculator screenshot 1 HF Beam Antenna Calculator screenshot 2 HF Beam Antenna Calculator screenshot 3

iPad Screenshots

(click to enlarge)

HF Beam Antenna Calculator screenshot 4 HF Beam Antenna Calculator screenshot 5 HF Beam Antenna Calculator screenshot 6

App Changes

  • June 07, 2014 Initial release
  • July 20, 2014 New version 4.1
  • September 16, 2014 New version 4.2
  • October 10, 2014 New version 4.4
  • March 03, 2015 New version 4.5
  • June 13, 2019 New version 4.6