Locator DX
Utilities
Only for iPhone
$1.99 · Designed for iPhone. Not verified for macOS.
iPhone
Essential ham radio tool! Calculate grid square distances, azimuths, and visualize DX paths on interactive maps. GPS-enabled for quick field operations. 73!
Locator DX is the essential tool for amateur radio operators to calculate distances and bearings between Maidenhead grid locators anywhere in the world.
KEY FEATURES
Distance Calculator
Calculate precise distances between any two Maidenhead locators in 4 or 6 character format. Results displayed in both kilometers and miles with accurate great circle calculations.
Azimuth and Bearing
Get exact azimuth bearing and back azimuth for antenna pointing. Perfect for VHF/UHF operations, satellite tracking, and DX hunting.
Interactive World Maps
Visualize your connections on beautiful interactive maps with three display modes:
- Standard road map
- Satellite imagery
- Hybrid view with labels
See your QTH and DX station marked with custom icons, connected by a path line showing the exact route.
GPS Auto-Location
Instantly determine your current Maidenhead grid locator using GPS. Perfect for portable operations, Field Day, SOTA activations, and rover contests.
Calculation History
Automatically saves your last 20 calculations with timestamps. Quickly review past contacts, distances, and bearings. Swipe to delete individual entries or clear all at once.
Support for All Locator Formats
Works with both 4-character like JO70 and 6-character like JO70ab Maidenhead locators for maximum precision.
PERFECT FOR
- VHF/UHF operators planning antenna direction
- Contest participants logging grid squares
- Satellite operators tracking passes
- DX hunters finding new contacts
- Field Day and portable operations
- SOTA and POTA activations
- Learning about Maidenhead locator system
FEATURES AT A GLANCE
Worldwide coverage - calculate any two points on Earth
Accurate great circle distance calculations
Precise azimuth and back azimuth
Real-time GPS location to grid conversion
Beautiful interactive maps with satellite view
Automatic calculation history
Works completely offline except maps
Clean, intuitive interface
Optimized for both iPhone and iPad
Portrait and landscape support
No ads, no tracking, no accounts required
PRIVACY FOCUSED
Your privacy matters. Locator DX:
- Never collects or transmits your data
- Stores history only on your device
- Uses GPS only when you tap the location button
- No analytics or tracking
- No third-party services
Whether you are at home planning your next DX contact, operating portable in the field, or competing in a VHF contest, Locator DX gives you the calculations you need quickly and accurately.
73 de Locator DX
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Martin Kuera, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Martin Kuera
- Size
- 5.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.5 or later.
- iPhone
Requires iOS 18.5 or later. - Mac
Requires macOS 15.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.5 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Martin Kucera. All rights reserved.
