User Manual Part 1

Page 2-15
16 Sep 2015
23-15-29
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
JetWave™ System
© Honeywell International Inc. Do not copy without express permission of Honeywell.
The KRFU can be installed either on front or rear of tail mount antenna assembly horizontally
or vertically depending on space availability.
The KRFU is conduction cooled through the base plate with thermal pad. Mount the
Honeywell recommended thermal pad (refer to KRFU Thermal Pad Kit installation in section
3.F.) while installing KRFU LRU.
The KRFU must be installed close to the TMA assembly so as to minimize the
waveguide/coax RF losses on the RF interconnect.
It is recommended to use flexible waveguide/coax RF interface with interconnect losses not
exceeding 0.6 dB on the transmit path and 2 dB on the receive path between the KRFU and
the TMA assembly.
The typical KRFU LRU and TMA assembly (swept volume model of antenna shown)
interconnect arrangement is shown in Figure 2-4.
Figure 2-4. KRFU and TMA Interconnect Arrangement
(14) TMA Bonding Requirements
The ground straps are installed before proceeding with installation of the TMA assembly on
the antenna ad
apter plate or on the tail empennage airframe structure. The TMA assembly
and KRFU must be bonded to the airframe.
Consult the airframe manufacturer for the correct torque values.
J. OAE TMA Installation Procedure
Before doing any installation procedures, the installer must read and be aware of the safety
advisories listed in this manual. Only authorized technical personnel who are trained in general
aviation workmanship and have a basic understanding of satellite communication systems should
proceed with the following installation procedure.
The installation activities are detailed in subsequent sections as follows: