How do you report interference?

[VK3RX]

Last time I looked the report interference form on the ACMA website wasn't suited to reporting radiocommunications issues, and instead I read a while back the email addresses to use were interference@acma.gov.au and FieldOperations.Mail@acma.gov.au

As regards the "maths" you can play around with the calculator here:

Calculate intermodulation products from 2 and 3 frequencies.