6012-12w Technical Specifications
6012-12W Installation Manual
14.4.
Cables
14.4.1. Antenna L-Band IF Coax Cables (Customer Furnished)
Due to the loss across the length of the RF coaxes at L-Band, Sea Tel recommends the following 50 ohm
coax cable types (and their equivalent conductor size) for our standard pedestal installations. Type N
male connectors installed on the cables MUST be 50 Ohm connectors for the center pin to properly mate
with the female adapters we provide on the cable interconnect brackets inside the radome and at the
below decks equipment.
The coaxes must be continuous from the connection within the ADE radome, through the structure
of the ship to the BDE. Splices, adapters or dummy connections will degrade the signal level and are
discouraged.
Assure that the cable type that you choose has a loop resistance of less than 2.0 ohms across the
entire cable run. Copper clad iron center conductor cables should never be used.
Run
Coax
Typical. Loss @
Shield
Center
Installed
Tensile
Length
Type
1750Mhz
isolation
Conductor
Bend
Strength
Size
Radius
<100 ft
LMR-240
10.704 db per
>90db
0.056 In.
2.5 In. (63.5
80lb
100 ft(30.48 m)
(1.42 mm)
mm)
(36.3 kg)
up to
LMR-400
5.571 db per
>90db
0.108 In.
4.0 in.
160lb
150 ft
100 ft(30.48 m)
(2.74 mm)
(101.6 mm)
(72.6 kg)
up to
LMR-500
4.496 db per
>90db
0.142 In.
5.0 In.
260lb
200 ft
100 ft(30.48 m)
(3.61 mm)
(127 mm)
(118 kg)
Up to
LMR-600
3.615 db per
>90db
0.176 In.
6.0 In.
350lb
300 ft
100 ft(30.48 m)
(4.47 mm)
(152.4 mm)
(158.9 kg)
14.4.2.
Multi-conductor Cables (Customer Furnished)
Due to the voltage losses across the multi-conductor cables, Sea Tel recommends the following
wire gauge for the AC & DC multi-conductor cables used in our standard pedestal installations:
Run Length
Conductor Size
up to 50 ft
20 AWG (0.8 mm)
up to 100 ft
18 AWG (1.0 mm)
up to 150 ft
16 AWG (1.3 mm)
up to 250 ft
14 AWG (1.6 mm)
Up to 350 ft
12 AWG (2.0 mm)
14.4.3. AC Power Cable Above Decks (Customer Furnished)
Voltage:
110 or 220 volts AC, 50/60 Hz., single phase
Type:
Multi-conductor, Shielded
Number of wires
3 Conductors
Wire Gauge:
Use proper wire gauge for the length of the power cable run.
Insulation:
600 VAC
14-11
EAR Controlled - ECCN EAR99
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