QRP Labs QMX User Manual

8.2 Entering terminal applications mode
Normally the QMX serial port is connected internally to the QMX’s CAT command interpreter. CAT
commands include text and numbers, each CAT command is terminated by a semicolon. CAT
commands never include a carriage return (enter).
Note that when the terminal is connected, you can actually type on your keyboard to send CAT
commands. For example, try typing FA; (just those three characters – no Enter at the end). The
text FA00007074000; will appear on the terminal. FA is the command to read or set VFO A, and
the result is 7.074 kHz, the default QMX startup frequency. HOWEVER, this is not a very
convenient or easy way to try out CAT commands, there is a CAT command testing application
which is much easier to use.
To switch to terminal applications mode, simply press the Enter key on your keyboard. Now the
terminal applications mode will appear in your terminal emulator window, as shown below. The
screen shows the QMX firmware version (on the bottom line), and a main menu. You may use the
cursor keys to move the highlighted application up and down in the list, and press Enter to select
an application. Any nested menu or application can be quit by pressing Ctrl-Q which returns the
terminal to the main menu screen.
Operation of each of the applications will be described in detail in subsequent sections.
8.3 Exiting terminal applications mode
When exiting terminal applications mode, do not simply close the terminal emulator window. Doing
so will leave the QMX in terminal applications mode and it will not accept CAT commands. To
switch it back to CAT command mode, use the cursor keys to scroll down to the “Exit terminal”
option at the bottom of the main menu, and press Enter. The screen is now cleared, and QMX is
back in CAT command mode. Only then should you close the terminal emulator window.
QMX operang manual; rmware 1_00_012 61

QRP Labs QMX Specifications

General

Brand	QRP Labs
Model	QMX
Category	Transceiver
Language	English

Summary

1. Overview of Features

QMX Portability

Highlights the small size and low current consumption for portable operations.

Synthesised VFO Tuning

Details the VFO tuning using a Si5351A chip and rotary encoder, with two VFOs.

CW Keyer and Break-in

Explains the integrated lambic keyer and full/semi break-in operation.

2. Connectors

Paddle Connector Functions

Details the 3.5mm stereo jack for paddle, GPS data, and microphone input.

Audio and DC Power Connectors

Describes the 3.5mm audio output and 2.1mm barrel jack DC input.

3. Display Elements

4. Operator Controls

4.1 Tune Rate

Explains how to adjust the VFO tuning rate using the rotary encoder.

4.2 Keyer Speed

Details how to adjust the CW keyer speed using the 'Select' button and encoder.

4.3 RIT

Explains how to adjust Receiver Incremental Tuning (RIT) using double-click and encoder.

4.4 VFO Mode

Describes selecting between VFO A, VFO B, and Split modes for operation.

5. Menu System

5.1 Saving Current Operating Parameters

Stores current operating conditions like VFO frequency, mode, and keyer speed upon power down.

5.3 Editing Configuration Parameters

Details the process of editing menu parameters using the rotary encoder and buttons.

5.8 Audio Menu

Controls audio settings like volume step and sidetone volume and its absolute/relative mode.

5.11 Keyer Menu

Configures CW keyer settings like mode, swap, weight, and auto-space.

5.16 Protection Menu

Configures protection features like SWR protection, threshold, and supply voltage monitoring.

5.19 Factory Reset

Resets the radio to its default factory configuration, erasing all custom settings.

5.20 Update Firmware

Guides the user through rebooting into bootloader mode for firmware updates via USB.

6. Operating QMX on Digital Modes

WSJT-X Configuration

Step-by-step guide for configuring WSJT-X for audio and CAT control with QMX.

7. Firmware Update Procedure

Entering Bootloader Mode

Explains methods to enter firmware update mode, including button presses and jumpers.

8. Terminal Applications

PC Terminal Emulator Setup

Guides setting up terminal emulators like PuTTY for connecting to QMX.

8.5 Band Configuration

Details configuring parameters for each amateur radio band, including frequencies and PTT.

8.6 Hardware Tests Menu

Accesses tools for optimizing and testing hardware, including filter sweeps and diagnostics.

8.7 PC and CAT Menu

Covers PC interface and CAT commands, including system config and input analysis.

9. Resources

10. Document Revision History