When you speak on the radio, follow these steps to assure you are heard correctly.
Keep messages clear and concise and follow the standardized message structure to avoid confusion.
Lets say you, the squad leader of Bravo, need to report infantry north of you. Here is how you would do so.
"Command, this is Bravo."
"Go for Command."
"Enemy squad. Patrolling. 300 meters north of us."
"Copy Bravo."
There are three parts of a radio transmission.
Again, It's important to keep your messages concise. When you are transmitting, no one else can transmit. Don't talk about long and detailed plans over the radio if you can take a 1 minute walk over to whoever you need to talk to.
This also helps with "radio fatigue". The more unnecessary transmissions are on the radio, the more likely someone will start tuning the sound of it out and miss extremely important calls