QRP Labs QMX Transceiver: Operating Manual

Introduction to the QMX Transceiver

The QRP Labs QMX is a high-performance, 5 or 6-band multi-mode 5W QRP transceiver kit. It features a sophisticated Software Defined Radio (SDR) receiver integrated within a 168MHz 32-bit ARM Cortex M4 microcontroller. This manual details the operation of the QMX, including its various modes such as CW, digital modes, and its capabilities as a standalone transceiver or a Digimodes modem.

Explore the intuitive controls, extensive menu system, and advanced features like synthesized VFO tuning, memory presets, and message modes. The QMX is designed for portability, making it an ideal companion for field operations like SOTA (Summits on the Air) and POTA (Parks on the Air) activations.

Key Features

• Multimode operation: CW, FSKCW, WSPR, SSB
• Synthesized VFO with rotary encoder tuning
• 16 frequency presets
• 12 programmable messages
• Built-in CW keyer with adjustable speed
• Full or semi break-in (QSK) capability
• CW decoder
• High-performance 48ksps 24-bit USB soundcard
• CAT control via USB
• GPS interface for calibration and time discipline

Getting Started

This manual is essential for understanding the assembly and operation of your QMX transceiver. Please read the basic assembly and use instructions carefully before applying power. For detailed assembly instructions, refer to the separate assembly document.

For more information on QRP Labs products, visit www.qrp-labs.com.