All the major radio makers have support forums on RCU. This is the one for Hitec. Great place to look for an answer to your question or to post the question directly.
http://www.rcuniverse.com/forum/forumid_52/tt.htm
Actually I posted a similar question as one of our new members is thinking of getting an A9
http://www.rcuniverse.com/forum/m_11...m.htm#11366974