I am having a problem with my radio when I plug in my portable intercom. I have a Icom A24 handheld and a flight com portable intercom. If I plug my headset directly into the radio everything works fine, when I plug headsets into the intercom I can barely hear transmissions. The pilot to passenger conversations are loud and clear and my transmissions to other aircraft are loud and clear. I have tried different headsets and even replaced my intercom thinking that was the problem. Let me know if you guys have seen this before or have any suggestions. Thanks!