I am still building in my garage. I have just fitted my GNC255. Good news and bad news. It powers up OK and seems to talk to my Skyview using legacy SL30 settings. However, there is a loud background noise.
I have nothing else powered up and there is no noise on the intercom or my GNS430 when I power those up. Therefore I don't think it is a power or ground issue. The noise is there on both the COM and NAV monitor. If I turn the volume down low to below about 1/4, the noise goes away.
Could it be that I am in my garage and there is such a bad S/N ratio that the auto squelch can't cope? Am I worrying about nothing?
I have nothing else powered up and there is no noise on the intercom or my GNS430 when I power those up. Therefore I don't think it is a power or ground issue. The noise is there on both the COM and NAV monitor. If I turn the volume down low to below about 1/4, the noise goes away.
Could it be that I am in my garage and there is such a bad S/N ratio that the auto squelch can't cope? Am I worrying about nothing?