Does this ELT require an aircraft power source?
Per the supplier: No, an aircraft power source is not necessary.
What type of wire is recommended for the remote switch assembly installation.
The manufacture recommends an eight conductor wire like our part number 11-09782.
What are the requirements for testing the ELT in the US? Can it be accomplished by an A&P without special tools?
The FAA still requires transponder and ELT checks every 2 years. The E.L.T. 406 with GPS does have a quick self test feature making it easy to check without specialized tools.
Is this certified by the FAA or any regulatory body?
All ELT's must have a TSO Approval. So, yes the E.L.T. is certified by the FAA.
Post Crash, Can this unit be detached from aircraft and used with a portable antenna? Is the USA Unit still acceptable when I fly my US registered experimental certified aircraft in Canada or Mexico?
Per the manual, this unit does not list a compatible portable antenna. This ELT supports an aircraft mounted antenna.
Is the E.L.T. 406 with GPS a multiple frequency ELT, i.e., does it transmit on 121.5/243.0, in addition to 406?
The E.L.T. GPS is not equipped with a 121.5/243 MHz transmitter. This broadcast on the 406.037 MHz frequency.
Is the supplied Blade antenna required? Can a 406MHz whip antenna and separate GPS antenna be used instead of the supplied Blade antenna?
Part of the TSO for this ELT requires that the included antenna must be installed. Although a different antenna would work, it is not recommended.