Mounted the ARTEX ELT under the rear seat. Most builders are mounting the rather long antenna under the baggage floor facing aft. The avionics guys and my neighbor IA are not keen on this mounting. I have an email to TAF to see where they have been mounting it.

The ARTEX installation guide said to mount the antenna vertically and be 36 inches from other powered antennas. I have a possible solution that my IA neighbor is ok with that I will run by my avionics vendor