8.33 KHz spacing was introduced over 5 years ago. Initially the new frequencies were spoken as Channels but this proved to be too difficult and Eurocontrol changed the method of reading frequencies about 3 years ago. All frequencies must use 6 digits unless the last two digits are both zero. That is what you are required to do on the radio and in the test.
The practical tests however do not include any frequencies that do not end in two zeros so you will not have the opportunity to display you knowledge! The written exams do! The confuser is based on old exam papers.
The real answer is always in CAP413
Last edited by Whopity; 4th Dec 2008 at 08:59.