[Elecraft] KX2 echo in the speaker

[Irma & Linas(LY2H)]

Hello group,

I have a bizzair effect in my KX2. When I touch the chassis of the radio
 each  touch corresponds with the echo in the speaker. The radio is not
connected to the antenna, could run on the battery or the PS, the effect is
there. Touching also makes the Smeter bar move a bit.
Does anybody has/had the same issue and know the solution?

Thanks , Linas LY2H