How to turn of Roger Beep - Digitalk SP2302AA Walkie Talkie?

Hi everyone!,

I own 4 Digitalk SP2302AA Walkie Talkie's and 3 of them have the beep at the end of a transmission (roger beep) turned on whilst one of them doesn't. Does anyone know how to turn it off? I know it is possible because one of them has it turned off.

Thanks! :DHow to turn of Roger Beep - Digitalk SP2302AA Walkie Talkie?
As far as I can gather from the pitiful documentation I've found you have to go into the Menu and select Call Tones then select from the options available there. There's also a vague reference to "factory setting" for a roger bleep which may mean a jumper has to be chopped if the Call Tone menu options don't turn it off.