Audio Panel - COM1 / COM2 'Mute' question.

[Chunkymonkey633]

I'm new to both X-Plane and the Challenger and hence on a steep learning curve, but I thought that by pressing the respective illuminated VHF 1 or VHF 2 buttons on the Audio Panel they would 'mute' the respective COM 1/2 frequency(?)
When I turn them, the volume goes up and down OK, but when pressing them so that the light goes out, I can still hear for example, the ATIS.
(I've got both the LHS and RHS Audio Panels 'in-sync' with each other).
Have I misunderstood their operation, or need to do something else too?
Thankyou.

[Pils]

5 hours ago, Chunkymonkey633 said:

I'm new to both X-Plane and the Challenger and hence on a steep learning curve, but I thought that by pressing the respective illuminated VHF 1 or VHF 2 buttons on the Audio Panel they would 'mute' the respective COM 1/2 frequency(?)
When I turn them, the volume goes up and down OK, but when pressing them so that the light goes out, I can still hear for example, the ATIS.
(I've got both the LHS and RHS Audio Panels 'in-sync' with each other).
Have I misunderstood their operation, or need to do something else too?
Thankyou.

When the microphone/transmit selector (the knob in the middle) is in a particular position then the corresponding radio/audio source cannot be muted.

[Chunkymonkey633]

Thankyou Pils for the reply, and apologies for my delayed response (life/work....etc).
It has started to work now, without me having changed anything, but it's good to know about the knob position.
I did have another issue (for the Speed Call Out Mod), and that has 'fixed' itself too.
There have been a few X-Plane updates that have downloaded, so I wonder if they fixed some other underlying issues in my build.