[Elecraft] K3 high pitched tone and noise when keying the mic

[Pierfrancesco Caci]

>>>>> "Paul" == Paul Taenzer <ptaenzer at gmail.com> writes:

    Paul> I recently developed a high pitched tone and seemingly random
    Paul> noise when 
    Paul> keying the mic with either PTT or VOX


    Paul> The noise goes away when the mic gain is set to zero. Changing
    Paul> from the 
    Paul> Yamaha CM500 to a random computer headset made no difference.


how's your monitor level set? I once forgot to turn it down after some
tests, and it was getting back in the mic, causing the typical loop whistle.

-- 
Pierfrancesco Caci, ik5pvx