# CQDX 59 — アマチュア無線のQSOシミュレーター

> Amateur radio QSO simulator with realistic call sign and voice variations. (iPhone/iPad app by koji kamogawa.)

- Source: https://appshunter.io/ios/app/cqdx-59/id1502565247 (this page in markdown: same URL + `.md`)
- Developer: [koji kamogawa](https://appshunter.io/developer/1488210713)
- Category: Education, Utilities
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 10 MB
- Languages: American English, Japanese
- Released: 2020-03-18
- Data updated: 2026-08-22
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/cqdx-59/id1502565247/reviews.md

## What is CQDX 59?

This App is a real QSO simulator for Amateur Radio(HAM). Reproduce “QSO for CQ call, and 59 report exchange". In addition, the call sign and the voice quality (tone, speech speed) signal level of the speaker differ for each QSO to provide realism. Furthermore, the call sign of your own station that issues CQ can be set arbitrarily.

【Characteristic】
1. 59 style QSO or AADX Contest Style QSO
2. All call signs are converted to phonetic codes
3.Pseudo signal meter
4.Status display showing TX / RX
5.Voice select function from YL / OM
6.Phonetic code select function
7.Support the Pile-up Mode

【Other features】
1. A function to select the number of QSOs to communicate.
    You can choose from 5 or 20.
2. A function to select QRN.
    ON / OFF can be selected.
3. A function to select the area of ​​the call sign of the partner station.
    You can choose from JA USA or W / W.
4. Supports easy mode.
    The pitch and volume of the partner station are constant.
5. Function to clear score information
    You can delete the high score information that you have.

Supported keyboard input from Apple Silicon Mac. 
[Support Key]
A-Z, 0-9, /
Enter:return
ESC:esc
BS:delete
CQ:UpArrow
AGN:DownArrow
TU:[
LEFT:LeftArrow
RIGHT:RightArrow

## Key features

- QSO simulation for amateur radio
- Realistic call sign and voice variations
- Customizable own station call sign
- 59 style or AADX Contest Style QSO
- Phonetic code conversion
- Pile-up mode support
- QRN selection

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/cqdx-59/id1502565247/reviews.md

### 5/5 — edit : works great

*2021-05-31*

edit: my mute switch was set to on, flipped the switch and got my audio to work.  great app qso at different voice rones and speed  **iphone 10xr ios 14.6 volume to 100% but has no audio**

**Developer response:** Thanks for your updating comment.
I was relieved to hear it.

### 5/5 — Awesome! I have suggestions for the dev.

*2020-09-06*

Hi! Your app is actually really cool and quite clever.

You should add a qso logbook history page to see all your past qsos.

You should also add a frequency spectrum, so you can make qsos on whatever frequency you would like. Whenever.

You should make it so that you can make qsos with other players too. And if there isnt enough players than mix the qsos in with robots too, like you already are doing.

This is a hidden gem and im glad i found it. You and these apps have alot of potential! Keep it up!

**Developer response:** Thank you for all your comments and suggestions. Little by little, I would like to consider the functions, additions and improvements of the app. Thank you again.

## Frequently asked questions about CQDX 59

### What is CQDX 59?

CQDX 59 is a simulator designed to replicate amateur radio QSOs (contacts). It allows users to practice making CQ calls and exchanging signal reports, offering a realistic experience with varied call signs and voice qualities.

### What are the different QSO styles supported by CQDX 59?

CQDX 59 supports two main QSO styles: the standard '59 style QSO' for general communication and the 'AADX Contest Style QSO' for competitive radio contesting.

### Can I customize my own call sign in CQDX 59?

Yes, you can set your own station's call sign arbitrarily in CQDX 59. This feature allows for a more personalized and realistic simulation of your own radio operations.

### Does CQDX 59 offer realistic audio simulation?

Yes, the app aims for realism by varying the call sign and voice quality, including tone and speech speed, of the speaker for each QSO. It also simulates different signal levels.

### What are the options for the number of QSOs in CQDX 59?

You can choose the number of QSOs you wish to communicate within the simulation. The available options are to conduct either 5 QSOs or 20 QSOs per session.

### Does CQDX 59 have ads?

Yes, CQDX 59 contains advertisements. As it is a free application, ads are displayed to support its continued development and availability.

### What devices does CQDX 59 support?

CQDX 59 is designed for iOS devices, specifically supporting iPhone and iPod. It also supports keyboard input from Apple Silicon Macs.

### How often is CQDX 59 updated?

The latest version of CQDX 59 is 3.6.1, which was last updated on January 21, 2024. This indicates regular updates to improve the application.

## Version history (last 5 releases)

### 3.6.1 — 2024-01-21

Supported keyboard input from Apple Silicon Mac. (Not compatible with iOS)
[Support Key]
A-Z, 0-9, /
Enter:return
ESC:esc
BS:delete
CQ:UpArrow
AGN:DownArrow
TU:[
LEFT:LeftArrow
RIGHT:RightArrow

### 3.5.0 — 2023-05-04

Updated Admob SDK.

### 3.4.0 — 2023-01-04

The operation has been modified so that EASY mode is easier to listen to.

### 3.3.0 — 2022-12-24

Minor bug fixes

### 3.2.0 — 2022-12-10

Fixed minor bugs.

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## More apps by koji kamogawa

- [UkeDrum](https://appshunter.io/ios/app/ukedrum/id1488210714)
- [RST 599](https://appshunter.io/ios/app/rst-599/id1488919851)
- [WabunMorse](https://appshunter.io/ios/app/wabunmorse/id1490745806)
- [音耳せん](https://appshunter.io/ios/app/id1496478545)
- [RST 599 Pro](https://appshunter.io/ios/app/rst-599-pro/id1497452984)
- [RST 599x](https://appshunter.io/ios/app/rst-599x/id1498597799)

All apps by koji kamogawa: https://appshunter.io/developer/1488210713

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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 2026-08-22.*