Installation Manual

DRAFT COPY
NOMAD MXU Installation Manual
3:36 PM 02/12/99
DRAFT COPY
27
APPENDIX “B” – Coax Cable Options
Figure B1: Standard cable lengths as shipped with the NOMAD MXU.
Figure B2: Custom cable lengths to be ordered by the user.
MXU
W1-A
0.1 dB
SURGE
PROT.
Plug
Aero
AT1621-73W-TNCF
Polyphaser
IS-CLF50LN
Jack
Jack
0.1 dB
Type N
Type N
Jack
Plug
Jack (Bulk Head)
Type N
0.3 m (1 ft.)
LMR-240
TNC
0.1 dB
W3
Earth for
Lighting Protection
Plu
g
TNC
W2
0.5 dB
Plug
TNC
Plug
W1-B
Antenna Component Length dB Loss
W3 Antenna Lead-in
0.3 Meters (1 ft) NOTE 1
0.1 dB
Outside Coax Connector 0.1 dB
W1 = W1A + W1B ( NOTE 2)
X Meters NOTE 3
1.5 dB
Lighting Surge Protector 0.1 dB
W2 Inside Coax 1.5 Meters (5 ft) NOTE 1 0.5
Totals X + 1.8 Meters 2.3 dB Loss
Non - Standard Length / Type Cables
NOTE 3: The allowable length of the W1 cable, or W1A + W1B cables, is based on dB loss.
The total dB loss through W1, or W1A + W1B, and related connectors and adapters must be less
than 1.5 dB.
NOTE 1: Supplied coax cables W3 and W2 must be used in the installation to serve as strain
reliefs; else, damage to the antenna or the antenna connections on the MXU will occur..
NOTE 2: Depending on the installation, W1 and or W3 may be too short. If so, custom coax cable
W1, or two custom cables W1A and W1B, may be procured from a cable vendor.
Type of coax depends on the length Type of coax depends on the length
PlugJack (Bulk Head)
Type N
Bulk head connector to be used as the
anchor for the strain relief.
W1A + W1B must total less than 1.5 dB of loss.
Plug
Jack
Antenna Component Length Db Loss
W3 Antenna Leadin
0.3 Meters (1 ft)
0.1 dB
Outside Coax Connector 0.1 dB
W1 Outside coax
8.0 Meters (26 ft) 1.5 dB
Lighting Surge Protector 0.1 dB
W2 Inside Coax 1.5 Meters (5 ft) 0.5
Totals 9.8 Meters or 32 Feet 2.3 db Loss
Summary, Standard Length / Type Cables
MXU
W1 W2
1.5 dB 0.5 dB
0.1 dB
SURGE
PROT.
Plug
Polyphaser
IS-CLF50LN
Jack
Jack
0.1 dB
Plug
Type N
Type N
TNC
Plug Jack
Plug Jack (Bulk Head)
8 m (26.2 ft)
LMR-400 or
1.5 m (4.9 ft)
LMR-240
0.3 m (1 ft.)
LMR-240
TNC
0.1 dB
W3
Earth for
Lighting Protection
Plug
Jack
Antenna