I recently started flying online and I am having a problem when using the PMDG 738 together with Squawk Box 4. On the radio panel the transponder is set to standby, but online controllers will see me as if I have set it to C-mode (or TA/RA mode in the PMDG)Also using the Squawk Box panel to switch modes doesn't work. It is always in C-mode and when I click on the standby button, it will switch back to C-mode after 2 seconds.Has anyone encountered this problem before and has a solution for it?ThanksJeroen

I recently started flying online and I am having a problem when using the PMDG 738 together with Squawk Box 4. On the radio panel the transponder is set to standby, but online controllers will see me as if I have set it to C-mode (or TA/RA mode in the PMDG)Also using the Squawk Box panel to switch modes doesn't work. It is always in C-mode and when I click on the standby button, it will switch back to C-mode after 2 seconds.Has anyone encountered this problem before and has a solution for it?ThanksJeroen

Works fine for me. It sounds like you have another keyboard, joystick switch or something else assigned to the transponder panel. Please provide further information concerning your setup and then we could make a few more suggestions.

Works fine for me. It sounds like you have another keyboard, joystick switch or something else assigned to the transponder panel. Please provide further information concerning your setup and then we could make a few more suggestions.

That's right. I have a knob from the GoFlight RP48 set up in such a way that when I rotate it, it will rotate the knob of the transponder panel. It does this by using FSUIPC with its mouse macros. I will try later on to see if disabling this will solve the problem.Thanks

Problem solved! :-)Was indeed the key combo assigned to it. Doesn't matter, because I now just click on the SB panel. Thanks for the tip