Pakö ("to communicate" in the Bribri language of Costa Rica) is a free, open-source program for amateur radio digital modes: FT8, FT4 and the new JTTY mode. It is a simple, friendly alternative for operators who want to get on the air quickly: pick a station, double-click, and Pakö completes the QSO and logs it.

Version 2 adds JTTY (keyboard-to-keyboard, RTTY-style operation without time slots, using the engine from WSJT-X 3.2), editable macros, rig control through Hamlib, new/worked colour highlighting, PSKReporter spotting and an interface in seven languages.

Pakö is now released under the GNU GPL v3. Source code: https://github.com/ti5lx/Pako

Written by TI2LX, Costa Rica. Windows 10/11, 64-bit.

Features

  • FT8 and FT4, switchable with one click
  • Multi-pass decoder with signal subtraction, which recovers weak and overlapping signals hidden under strong ones
  • SNR, time offset (DT) and audio frequency shown for every station
  • Color-coded message list: red for calls to you, green for CQs, yellow for your own transmissions
  • Hover over any message for a plain-language explanation of what it means
  • Real-time waterfall with RX and TX frequency markers; click to set RX, right-click to set TX
  • Automatic ADIF log, compatible with any logging program
  • Automatic upload of each QSO to QRZ.com, eQSL and LoTW (via TQSL), each enabled separately
  • Live server traffic window showing exactly what was sent and what each service answered
  • Clean, simple Spanish-language interface
  • Lightweight Windows installer
  • JTTY mode (engine from WSJT-X 3.2.0-rc1): free-text, RTTY-style contacts with no time slots.
  • 16 editable macros for JTTY, automatic CQ, call queue and serial number.
  • Built-in JTTY receive self-test (no radio needed).

Project Samples

Project Activity

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License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Windows

Languages

Spanish

Intended Audience

Other Audience

User Interface

.NET/Mono

Programming Language

Visual Basic .NET

Registered

2026-09-27