was a staple of the DOS era, today’s hams have better options for Windows 10 and 11. Winlink Express:
: This is the default state. You use terminal software to send text commands to the TNC. It is great for learning and manual operation. Use any terminal program (PuTTY, Tera Term, or built-in software like minicom on Linux) with these settings:
The PK‑232MBX’s support for PACTOR I (and II with the optional DSP‑232 upgrade) makes it a budget Winlink radio mailbox. The recommended software today is or VARA for soundcards, but for pure PACTOR, Winlink Express (latest version 1.8.14) includes a “PK‑232 PACTOR” session type. Set it to COM port, 4800 baud, and you can connect to RMS stations — no extra drivers needed.
— if you enjoy a weekend project that yields a rock‑stable, RF‑immune TNC. The PK‑232 still outperforms cheap soundcard interfaces in high‑noise environments (e.g., mobile HF or urban QRM). Its front‑panel LEDs for DCD, PTT, and status are irreplaceable. pk232mbx software updated
(Hardware mod)
Most modern PCs lack native RS-232 DB9 serial ports. Operators must use USB-to-Serial adapters (often using FTDI or Prolific chipsets). The updated software optimizes data buffering to prevent dropped packets and timing errors caused by these adapters. 3. Expanded Mailbox Capabilities
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. was a staple of the DOS era, today’s
Unplug the cable from the PK-232 end. Short pins 2 and 3 on your computer's serial cable. Type characters in the software terminal. If they echo back on your screen, your PC and cable are working perfectly; the issue lies in the TNC hardware settings.
Locate EPROM sockets U1 and U3 on the front left of the board.
For detailed technical support, you can contact Timewave's Support Department at (651) 489-5080 during business hours. PK-232 Upgrade Guide - Timewave It is great for learning and manual operation
Updating the firmware is the single most effective way to improve your TNC. It fixes bugs, adds new modes (like PACTOR and DSP filtering), and ensures compatibility with modern software.
Adds an interface to use your computer's sound card for modes like PSK-31.
| Hardware | Notes | | :--- | :--- | | | With custom firmware, this old router can be turned into a low-cost APRS iGate connected to the PK-232's serial port. |