Re: [Elecraft] K2: what is this strange intermittent buzzing sound?

2010-11-28 Thread Don Wilhelm
Bob, That is normal - see page 38 of the KDSP2 manual, not to worry. "Receiver noise heard when Clock or DSP menus displayed. This is normal. The main microcontroller in the K2 polls the KDSP2 for information to display about once per second, waking up all option module processors, which gener

[Elecraft] K2: what is this strange intermittent buzzing sound?

2010-11-28 Thread Bob
My K2 seems to have a rather strange intermittent buzzing sound that occurs only when I press DISPLAY for the display to turn on/off the DSP noise reduction and notch filter. The buzzing sound goes on and off at an approximately 1 sec cycle. This occurs only when the NR and notch filter settings a