# DBHamPlot

> Amateur radio tool for distance and bearing calculation using Maidenhead grids. (iPhone/iPad app by Thomas Sullivan.)

- Source: https://appshunter.io/ios/app/dbhamplot/id799430275 (this page in markdown: same URL + `.md`)
- Developer: [Thomas Sullivan](https://appshunter.io/developer/307748713)
- Category: Utilities, Navigation
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 9.1 · 12 MB
- Languages: American English
- Released: 2014-01-31
- Data updated: 2026-08-02
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dbhamplot/id799430275/reviews.md

## What is DBHamPlot?

Compute distance and bearing using Maidenhead location. This was originally intended for use by amateur radio operators who participate in microwave communications however it can be used by any ham in order to determine a distance and bearing to another radio amateur. 

This version specifically for the iPad provides map and controls all on one screen. The larger map area over both iPhone versions should prove helpful. You get a map of the source and target along with a pin annotation and an overlay identifying the six-digit grid area. If a user touches an empty location on the screen for one second a new annotation is added at that spot identifying the grid. Any user-added annotations are removed if a new source or target are entered. This feature is great because you can zoom in on a location, touch the screen, and get a 6 digit grid; this is especially handy when your microwave buddy pulls over to the side of the road to make a contact with you (or someone else) but he/she has no idea what their grid square is.

## Key features

- Compute distance and bearing
- Maidenhead location input
- Map display with annotations
- Identify six-digit grid areas
- Interactive map for location pinpointing
- User-added annotation removal


## Frequently asked questions about DBHamPlot

### What is DBHamPlot used for?

DBHamPlot is used to compute the distance and bearing between two locations based on their Maidenhead grid coordinates. It's particularly useful for amateur radio operators to quickly find the relative position of other hams.

### Is DBHamPlot available on iPhone?

This version of DBHamPlot is specifically designed for the iPad, offering a larger map area and controls on a single screen. The description mentions previous iPhone versions, but this release focuses on the iPad experience.

### How does DBHamPlot help with grid squares?

You can zoom in on a location on the map, touch the screen for one second, and DBHamPlot will add an annotation identifying the six-digit grid square for that spot. This is helpful if you don't know your grid square.

### Can I save locations in DBHamPlot?

User-added annotations are removed when a new source or target location is entered. The app does not appear to have a persistent save feature for locations based on the description.

### What is the rating of DBHamPlot?

DBHamPlot has a perfect rating of 5.0 stars based on 1 review, indicating a highly positive user experience among its current users.

### How often is DBHamPlot updated?

The app was last updated on July 24, 2017, with version 2.0. This indicates a relatively infrequent update cycle for the application.

### What is the age rating for DBHamPlot?

DBHamPlot has an age rating of 4+, making it suitable for a wide range of users, including younger individuals.

### Does DBHamPlot have ads?

No, DBHamPlot does not contain advertisements. The application is free to download and use without any ad interruptions.

## Version history (last 2 releases)

### 2.0 — 2017-07-24

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

Updated for latest iOS. Resolved issue with using location services. Added a Geodesic line between grids. I swapped the control and display on the top. I guess it favors right-handed people but, I'm one of them. Also, the source button is green in color and that matches the annotation pin color for the source. The target button and annotation pin are red. Any touch-generated grids have an annotation pin colored blue.

### 1.0 — 2014-01-31

No release notes.

## Apps similar to DBHamPlot

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ham Radio Tools.](https://appshunter.io/ios/app/ham-radio-tools/id6759591447) | — | Free | Utilities |
| [Max Calc](https://appshunter.io/ios/app/max-calc/id6463495098) | 5.0 (1) | Free | Utilities |
| [StayReady Kits](https://appshunter.io/ios/app/stayready-kits/id6759260973) | — | Free | Utilities |
| [Iron Index](https://appshunter.io/ios/app/iron-index/id6759079356) | — | Free | Utilities |
| [Guard7-Lite](https://appshunter.io/ios/app/guard7-lite/id6482847900) | 3.5 (2) | $6.99 | Utilities |
| [xCluster](https://appshunter.io/ios/app/xcluster/id1644543785) | 4.0 (5) | Free | Utilities |

## More apps by Thomas Sullivan

- [DBHam](https://appshunter.io/ios/app/dbham/id558673465)
- [DBHamPlus](https://appshunter.io/ios/app/dbhamplus/id683196156)

All apps by Thomas Sullivan: https://appshunter.io/developer/307748713

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-02.*