# RST 599TK — CW QSO Simulator for HAM > Amateur radio CW QSO simulator with touch keyer and decoder. (iPhone/iPad app by koji kamogawa.) - Source: https://appshunter.io/ios/app/rst-599tk/id1510750204 (this page in markdown: same URL + `.md`) - Developer: [koji kamogawa](https://appshunter.io/developer/1488210713) - Category: Education, Entertainment - Price: Free - Rating: 4.10/5 from 9 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 36 MB - Languages: American English - Released: 2020-05-01 - Data updated: 2026-08-22 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/rst-599tk/id1510750204/reviews.md ## What is RST 599TK? This app is a real CW QSO simulator for Amateur Radio.  "599BK & AADX Contest type QSO" is supported.  Input of Morse Codes are by using Electric Touch Keyer.  Changing of TX/RX is by SEND button. Supported Min-in CW Decoder too. 【Characteristic】 1. "599BK" and "Contest" style support. 2.Support the CW Speed Control, Reverse of Dot/Dash pad. 3.Status display showing TX / RX operation. 4.Support the space insertion operation both automatic and manual. 5.Support the Min-in CW Decoder function. 6.Support the shortcut-key of CQ and TU. CQ Button function can be set by setting menu. 7.Support the repeat-call function. It works only when the TU button is pressed at the end of the QSO. 8.Support input function by key button 【How to use】 1.The case of CQ Calling Press SEND button Input "CQ CQ DX DE (YOUR CALLSIGN) PSE K" by Touch Keyer. Press SEND button again 2.The case of CQ Answering Press SEND button Input "QRZ DX" by Touch Keyer or Straight Key. Press SEND button again --- Examples of QSO --- [CQ Calling] "CQ CQ DX DE xxnxx xxnxx PSE K" >>> xxnxx DE **n** K "**n** DE xxnxx UR RST 559 BK" >>> R MY RPT 559 UR RST 599 BK "QSL TU" >>> R 73 TU "E E" >>> E E [CQ Ansewing] "QRZ DX" >>> "CQ CQ DE **n** **n** PSE K" "**n** DE xxnxx K" >>> "xxnxx DE **n** UR RST 579 BK" "R **n** DE xxnxx UR RST 599 TU" >>> "R TU" "E E" >>> E E --- DETEC WORDS --- [CQ Calling] CQ CQ DX CQ NA CQ JA [CQ Ansewing] QRZ QRZ DX QRZ NA QRZ JA [BOTH] DE K BK UR RST 73 TU E E etc... 【Example usage video】 - Touch Keyer - https://www.youtube.com/watch?v=CuSEaJtD3KQ - Microphone IN Mode - https://www.youtube.com/watch?v=goN9hVDEGnM ## Key features - CW QSO simulation - Electric Touch Keyer input - Contest style QSO support - CW Speed Control - Min-in CW Decoder - Shortcut keys for CQ and TU ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/rst-599tk/id1510750204/reviews.md ### 5/5 — Good CW tool. *2024-07-24* Works great.Sorry I didn’t know about the app a lot earlier than I found it **Developer response:** Thanks good comment. ### 5/5 — Good Practice simulation *2021-12-01* I enjoy the practice while i am away from my gear. Good stuff. 73 ve3myz **Developer response:** Thank you for your comment and high evaluation. ## Frequently asked questions about RST 599TK ### What is RST 599TK used for? RST 599TK is a simulator for amateur radio operators to practice Morse code (CW) communications, specifically focusing on QSO (contact) simulations. ### Does RST 599TK support different QSO styles? Yes, RST 599TK supports both "599BK" and "Contest" type QSOs, allowing users to practice various communication scenarios. ### How is Morse code input handled in RST 599TK? Morse code input is primarily done using an Electric Touch Keyer. The app also supports input via a key button and straight key for CQ answering. ### Does RST 599TK include a Morse code decoder? Yes, RST 599TK features a Min-in CW Decoder function, which can help users interpret incoming Morse code signals within the simulation. ### Can I customize shortcut keys in RST 599TK? Yes, the app supports shortcut keys for common phrases like CQ and TU. The CQ Button function can be customized through the settings menu. ### Does RST 599TK have ads? Yes, RST 599TK contains advertisements. This is part of its ad-supported monetization model. ### What devices is RST 599TK available on? RST 599TK is available for iPhone and iPod devices. It is designed for iOS users. ### How often is RST 599TK updated? The latest version of RST 599TK is 2.7.0, which was last updated on May 2, 2023. Updates typically occur to improve functionality and add features. ## Version history (last 5 releases) ### 2.8.0 — 2026-08-13 Supported the Iambic Mode A. ### 2.7.0 — 2023-05-02 Updated Admob SDK. ### 2.6.0 — 2023-04-03 An audio filter for sidetone has been added to the microphone input stage to reduce the influence of external sounds. ### 2.5.0 — 2023-04-01 Adjusted the output volume level. ### 2.4.0 — 2023-03-26 To solve the problem, disabled the CQ, TU, and KB buttons when using the Min-in decoder. To solve the problem, the Keyer cannot be switched during SEND. ## Apps similar to RST 599TK | App | Rating | Price | Category | | --- | --- | --- | --- | | [Morse Decoded](https://appshunter.io/ios/app/morse-decoded/id1578820123) | 5.0 (6) | Free | Education | | [SatNOGS](https://appshunter.io/ios/app/satnogs/id1669797826) | 5.0 (4) | Free | Education | | [Morse ICR](https://appshunter.io/ios/app/morse-icr/id6736839333) | 4.0 (4) | Free | Education | | [QRQ CW](https://appshunter.io/ios/app/qrq-cw/id6447576515) | 4.3 (7) | Free | Education | | [HAM Test Prep Lite: Extra](https://appshunter.io/ios/app/ham-test-prep-lite-extra/id303414909) | 4.6 (24) | Free | Education | | [Learn Morse Code - CW Trainer](https://appshunter.io/ios/app/learn-morse-code-cw-trainer/id1463307275) | 2.4 (5) | Free | Education | ## 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 ## Related topics [rst 599tk](https://appshunter.io/ios/topics/rst-599tk) · [rst 599](https://appshunter.io/ios/topics/rst-599) · [rst 599 pro](https://appshunter.io/ios/topics/rst-599-pro) · [morse keyer](https://appshunter.io/ios/topics/morse-keyer) · [koji kamogawa](https://appshunter.io/ios/topics/koji-kamogawa) --- *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.*