Are you using the same model or even the same brand radios?So I tried the audio ground loop isolator. It didn't solve the issue. I order this isolator per the instructions of the Mr. Blanton Founder and CEO of Broadcastify. Is there a ground loop isolator that goes on coax for an antenna? It makes no sense at all the audio would mix just because 1 antenna is connected via a T connector to 2 radios.