Updated | Pk232mbx Software

If you just want to send commands to the TNC:

The latest software update for the PK232MBX device includes several key improvements: pk232mbx software updated

Here’s the real update. BPQ32 (Windows) and LinBPQ (Linux/macOS) are node software for packet radio, but they include native support for the PK‑232MBX as a “L1” device. BPQ handles all the TNC’s modes — even PACTOR I — and exposes the PK‑232 as a TCP‑connected KISS port. If you just want to send commands to the TNC:

Why this matters: BPQ32 version 6.0.25 (released January 2026) fixes a long‑standing DCD‑hold bug with the PK‑232 on HF. You can now run a 24/7 Winlink gateway with an old PK‑232 and a $15 USB‑serial adapter. It just works. The latest software update for the PK232MBX device