I received a package today that contained my new ELT. I spent some time looking over the parts and reading the manual. I chose an ACK E-04. It is one of the later ELT’s that transmit on 121.5 and to satellite on 406. I wanted to put the antenna under the empennage fairing, but the antennas with 406 capability are just too long to mount between the aft bulkhead and the vertical stabilizer. I plan to install the antenna on the right passenger arm rest. We shall see.