Sea Tel Cobham 4009-91 MK3, Руководство по установке

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4009-91MK3 Installation Manual Series 09MK3 Ku-Band Technical Specifications
13-6
13.10. Radome Assembly, 50”
Type Frequency Tuned
Material Composite foam/laminate
Size:
Diameter: 131.3 cm (51.75 inches)
Height: 149.9 cm (59 inches)
Installed weight MAX 147.4 kg (325 lbs.) Including antenna pedestal.
RF attenuation Less than 0.3 dB @ 10.7-12.75 GHz, dry
Less than 0.3 @ 14.0-14.5 GHz, dry
Wind: Withstand relative average winds up to 201 Kmph (125 mph) from
any direction.
Ingress Protection Rating All Sea Tel radomes have an IP rating of 56
Cable Passage -
The radome base is designed with a bottom center cable passage and Roxtec® Multidiameter®
blocks for cable strain relief. Bottom center cable passage is recommended, however, a strain relief kit is provided with
the system if off-center cable entry is required. Note:
Strain relief installation procedure MUST be followed to
assure that the cored holes are properly sealed to prevent moisture absorption and de-lamination of the radome
base.
Maintenance
– The radome must be kept clean and free of residues that will increase the RF attenuation.
Repair
- NOTE: Damage to the seal of the inside, or outside, of the radome can allow moisture to be absorbed. This
will result in de-lamination of the radome, increased weight and higher attenuation.
To maintain the RF transparency characteristics of the radome top, any cracks, scratches or other damage to the
surface seal of the tuned radome top must be repaired and re-sealed by a competent “A” layered laminate, or cored
deck, repair professional.
Cracks in, or other damage to, the radome base can be repaired using typical fiberglass repair techniques and proper
sealing of the inside and outside surfaces. Edges of holes in the radome base must be properly sealed to prevent
moisture from being absorbed into the layered construction of the radome base.
Disposal
- Should it ever become necessary to dispose of the radome, it must be disposed of using the same
handling procedures as other fiberglass materials.
13.1. Series 09MK3 Environmental Specifications (ADE)
13.1.1. Environmental Conditions (ADE)
Temperature Range (Operating) -25º to +55º Celsius (-13º to +131º F)
Humidity 100% Condensing
Wind Speed 56 m/sec (125 mph)
Solar Radiation 1,120 Watts per square meter, 55º Celsius
Spray Resistant to water penetration sprayed from any
direction.
Icing Survive ice loads of 4.5 pounds per square foot.
Degraded RF performance will occur under icing
conditions.
Rain Up to 101.6mm (4 inches) per hour. Degraded RF
performance may occur when the radome surface
is wet.
Corrosion Parts are corrosion resistant or are treated to
endure effects of salt air and salt spray. The
equipment is specifically designed and
manufactured for marine use.