I've got the same configuration with a macbook pro, and the same issue.
--- In DVDongle@yahoogroups.com, "ing00bert" <ac8aw@...> wrote:
> I am using the DV-Tool on an MacBook. Whenever I connect to a D-Star
Gateway I get a
> constant high frequency chirping noise, which then goes away if
somebody is speaking. The
> frequency I would estimate at 8KHz or even more - so it is hard for
the ears to listen to that
> kind of noise in standby mode. Are there any settings available to
eliminate that noise? Or
> any squelch function that could be added to the software?
> 73, Ingo, West Bloomfield, MI