QRP Labs QDX-M firmware `v1_06`

QRP Labs · Released Dec 12, 2022 · First seen Sep 7, 2026

v1_06 is not the latest firmware for the QRP Labs QDX-M: the current version is v1_10 (July 19, 2023). Go to v1_10

In short — summary by updatemystuff.com

Adds 2200m band support and night mode, improves transmit accuracy, fixes split mode.

Written from QRP Labs's release notes, which are printed in full below.

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Resolved bugs and accuracy issues to greatly improve transmit tone setting accuracy
Add "Night mode" to configuration screen - makes panel LED very dim
New "TX shift threshold" parameter in Configuration screen, determines when TX freq updated (mHz)
Now successful TX is a 1Hz pulsating indication; 2 blinks is wider spaced for easy counting
When bias mA is 5mA, disable SMPS completely
Change default 80m Frequency min to 3200000
Firmware support for 2200m
Changed length of band name in the Band Config screen to 4 digits (to allow 2200m)
Correctly implement split mode (in split, RX on VFO A and TX on VFO B)
Changed minimum TX freq from 300kHz to 75kHz (to allow 2200m)
Qn CAT commands return string length is now longer to fit larger numbers
Implement fix to SP; command; now correctly returns SP1; if Split is set.
Added TP CAT command to return STM32 ADC temp sensor value (128-sample average)
More aggressive timeout for lack of audio to stop TX (to work with HF pager app)

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