Radio hops over digits after the decimal

[Arnason]

I have been having this problem for a long time

If atch is on 128.770 I can tune in 765 and the 775

i am unable to tune hin in between> 770

What could cause this}

[Martyson]

I have been having this problem for a long time

If atch is on 128.770 I can tune in 765 and the 775

i am unable to tune hin in between> 770

What could cause this}

Is it a P3D default atc that is asking you to tune 128.770 ?


Here you mentioned building a home cockpit:
https://www.prepar3d.com/forum/viewtopi ... 91#p187491

Is this the setup you are using?

If so, which aircraft and radio are you using?