Mention ten communication secrets of great leaders?

I do believe excellent communicator whether he/she is a leader or not shall assure to:1.
Be a good listener2.
Choose the right time, place, communication channel, and message content3.
Make your communication clear, accurate, realistic, easy to understand, and in the language of the audience4.
Get well prepared before the communication (fact-based), in a comprehensive and strategic approach5.
Break-The-Ice as you gets into the introduction especially on public meetings or talks6.
Always thank the people by the end of the communication

Shortly, below secrets, will creat great leaders : .
BE specific .
Focus on the leave-behinds not the take-aways: .
Have an open mind .
Shut-up and listen .
Read between the lines .Speak not with a forked tongue .Get personal .
Develop a technical command over your subject matter.
.
Speak to groups as individuals .
Be prepared to change the message if needed

- Speak your mind - Don't Mumble - If you don't know the answer of a question then prepare to say "NO I don't know but I will search" - Read blogs and tech forums on the subject - Present in a calm demeanour - Build Rapport - Give examples - Avoid Tech jargon - Open to questions - Listen to others