A few weeks ago Clem Schmidt released QIRX 4.0.4. Download it here.
QIRX manuals: here.
Mind: QIRX 4 is not free. You need a licence key.
What’s new?
The CPU load has been reduced.
1. A red dot indicates the active receiver.
2. Settings can be edited for non-active receivers while listening to an active receiver.
3. Automatic setting of DAB TII threshold. Manual setting is possible.
4. ADS-B squawk number has been added to the aircraft data.