Part #: E-04C.1 ACK Technologies Inc. ELT SYSTEM/121.5/406MHz. GPS capable, includes 250 Knot Whip antenna (E-04.8) and full install kit
Part #: E-04C.3 ACK Technologies Inc. ELT SYSTEM/121.5/406MHz/GPS capable/includes AV-300-1 350 knot rod antenna & install kit
Part #: E-04C.2 ACK Technologies Inc. ELT SYSTEM/121.5/406MHz/GPS capable/includes full install kit/no antenna
Part #: E-04C ACK Technologies Inc. ELT SYSTEM/121.5/406MHz/GPS capable/includes Mach 1 blade antenna & full install kit
Part #: E-04 ACK Technologies Inc. ELT SYSTEM/E-04/406MHz/GPS Interface/Includes: transmitter 406 & 121.5, lithium battery pack, external antenna, remote control, mounting tray & retaining straps, plug-in audible alert, remote cable, coax cable, installation manual
Part #: E-04R ACK Technologies Inc. ELT SYSTEM/E-04/406MHz/GPS/Includes: transmitter, lithium battery pack, external antenna, plug-in audible alert, install manual