[Elecraft] K3: DVR open ground problem

K3 #24 was upgraded to include the DVR earlier this year. It worked fine while testing just after installation and configuring. I used the DVR a few times for contesting, but not much recently. I noticed recently that any recording I make has the hum of an open mic (ground or shield?)

Re: [Elecraft] K3: DVR open ground problem

Hi Matt. I used the DVR controlled by N1MM in the last NAQP phone contest and it worked and sounded fine. - 73, Greg - AB7R Whidbey Island WA NA-065 On Fri Sep 25 11:04 , Matt Zilmer sent: K3 #24 was upgraded to include the DVR earlier this year. It worked fine