Tech Notes from the Field

Has anyone run into issues with 92kHz subcarriers and HD? Seems that when I turn on our HD carrier our 92kHz subcarrier client complains of noise or static. It is a crackly type sound from what I hear over the phone. It goes away when the HD carriers are off.

My initial feeling is the radios used to receive the subcarrier are sub-par and do not do well with the additional carriers turned on. We do not have that issue on another station with a 67kHz client.

As always I am interested in your thoughts and opinions. I will post any of my findings.