Elta ADT 406 AF, Руководство пользователя, Страница: 26 / 54

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Page 25
Feb 15/03
C. External antenna installation
This antenna should be approved by ELTA.
ELTA recommend to use P/N 25988 (antenna model 2624-82 manufactured by CHELTON)
The external antenna must be installed on the upper part of the fuselage, as far aft as possible.
Particular care must be taken with this attachment. Standart industry means must be used to lock the
screws.
The contact surface should be reinforced to prevent the antenna from tearing away at high speeds.
The cable used shall be of a high quality with very low losses.
RG 142 cable type is recommended with a length lower than 2 meters to keep losses close to 0.5 dB.
Connect the connector to the antenna and to the EXT. ANT. access on ELT, and install the coaxial cable.
This cable must be fixed to rigid aircraft structure all along its routing, and it should be as short as possible
to avoid Radio Frequency losses and/or cable destruction in case of crash.
D. Remote control unit installation
The ELT ADT 406 AP can be remotely controlled by using a remote control panel installed in the cockpit of
the aircraft.
The maximum length of this link is 200 meters and requires no grounded cable. The link requires 4 wires.