Apr/2006 - Honeywell KHF 1050 System Installation Manual

Hf communication system
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When the acceptable settings are dialed in, remove the ground from the
FCDE pin, returning the unit to normal operation. These settings are now
retained in non-volatile memory.
The factory default settings are:
LO L -
HI L -
F0 L - 90 *
LO P - 0
HI P - 50
LO A - 1
HI A - 9
F0 A - 90 *
* NOTE: F0L and F0A are for software releases 160 12 and higher.)
6.F.
Antenna Installation
6.F.(1)
Selecting an Antenna Configuration.
While numerous options are available in the choice of antenna configurations,
some configurations will be better suited for a particular installation than others.
Refer to Paragraph
configuration.
6.F.(2)
Bonding
Good electrical bonding of all antenna connections is required. Particularly
important is the bonding of the far end of the antenna in a grounded-antenna
configuration. If using the KHF 1050 Antenna Kit (P/N -71-01214-0002), the
ground plate associated with the 25ARM300-20E 30 feed-through termination
must be well bonded to the fuselage.
Similarly, good grounding is also required if using the 15ARM300-21 grounded
shackle. Additionally, it is important that the surface to which the antenna is
grounded be well bonded to the rest of the aircraft structure.
When using shunt antennas, such as described in Paragraph
Leading Edge of Vertical Stabilizer Antenna Mounting Location"
Paragraph
Location"
all connections are well bonded is critical. Refer to Paragraph
Coupler Electrical Bonding Connections"
considerations when installing an antenna configuration.
Revison 2
N
KHF 1050 SYSTEM INSTALLATION MANUAL
4
7
"5.B.(5) Antenna Location"
"5.B.(5)(j) Shorted Tranline or Towel Bar Antenna Mounting
, the importance of using low resistance conductors and ensuring that
when selecting an antenna
for special electrical bonding
23-10-09
"5.B.(5)(i)
and
"6.A.(1) Antenna
Page 2045

Apr/2006

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