Slices are coupled (cannot be moved independently of each other) with diversity reception

Reproduce the issue with a Flex 8600, two 2 m transverter receive paths, two panadapters, and diversity enabled on both slices. Start by tracing panadapter and slice handling around diversity reception and the FlexLib protocol; done means the slices remain independently tunable, or the unsupported limitation is made explicit.

Report preparation

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What happened?

When operating 2 m SSB with two transverters, I use two receive paths so I can use diversity reception.

With two panadapters open, I can initially tune the slices independently. However, when I enable diversity reception on both panadapters, the slices begin following each other as though they have been coupled or linked.

Changing the frequency of the slice on one panadapter causes the slice on the other panadapter to move with it.

This prevents using two independently tuned panadapters while also using diversity reception.

What did you expect?

Each panadapter and its associated slice should remain independently tunable.

Enabling diversity for one receive setup should only associate the diversity resources needed for that slice. It should not cause a slice associated with another panadapter to become frequency-linked.

For example:

Panadapter 1 / Slice A can be tuned to one 2 m SSB frequency with diversity enabled.
Panadapter 2 / Slice B can be tuned to a different 2 m SSB frequency with diversity enabled.
Tuning Slice A should not move Slice B.
Tuning Slice B should not move Slice A.

If FlexRadio hardware or the FlexLib protocol does not support two completely independent diversity groups simultaneously, AetherSDR should make that limitation explicit rather than silently coupling the slices.

Steps to reproduce

Connect AetherSDR to a FlexRadio with two 2 m transverter receive paths available.
Open two panadapters.
Create/use a slice on each panadapter.
Verify that the two slices can initially be tuned independently.
Enable diversity reception on the first panadapter/slice.
Enable diversity reception on the second panadapter/slice.
Tune the VFO/slice on one panadapter.
Observe that the slice on the other panadapter follows the frequency change as though the two slices are coupled.
Disable diversity and observe that the slices can again operate independently.

AetherSDR version

26.8.2

Radio model & firmware

Flex 8600

Operating system

Windows

OS version and hardware

Windows 11