Gps Coaxial Cable Fabrication; Signal Loss - Honeywell KMH 880 Installation Manual

B

2.2.8 GPS Coaxial Cable Fabrication

The GPS Antenna Splitter allows the existing KA 91 or KA 92 GPS antenna to be
interfaced to the KMH 820 EGPWS.
The following criteria must be observed when using the antenna splitter:
1. The length of an M17/128-RG400 coaxial cable cannot exceed 18 feet.
2. The maximum allowable signal loss between the KA 91/92 antenna
and the KLN series GPS receiver cannot exceed 8.0 dB. Refer to the
appropriate KLN series GPS receiver Installation Manual for determi-
nation of loss.
3. The maximum allowable signal loss between the KA 91/92 antenna
and the KMH 820 cannot exceed 8.0 dB. Refer to the following table to
determine the loss between the antenna and the KMH 820.
Part Number Description
071-01600-0001 GPS Antenna Splitter
M17/128-RG400 Coaxial Cable (18 ft max)
030-00134-0000 Straight TNC Connector
030-00134-0001 Rt Angle TNC Connector
030-00101-0002 Panel Mount Plug
M39012/28-0504 Bulkhead TNC Connector
M39012/29-0504 Panel TNC Connector
TOTAL SIGNAL LOSS (8.0 dB max.)
Rev 3, August/2002

Signal Loss

per Item
3.4 dB
0.2dB/ft
0.1dB
0.1dB
0.1dB
0.1dB
0.1dB
Table 2-1 Signal Loss
10609I03.CDL
KMH 880/KTA 870
Example Example
Quantity Signal
Loss
1 ea 3.4 dB
10 ft 2.0 dB
2 ea 0.2 dB
2 ea 0.2 dB
0 0
0 0
0 0
5.8 dB
Actual Actual
Quantity Signal
Loss
Page 2-29