ORBIT FR Weatherproof Absorbers - WP User Manual
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Weatherproof Absorbers - WP Series
WP Type 1
Coated fabric wrapping
WP Type 2
> Applications:
• Open area test sites
> Key features:
• Withstands harsh outdoor conditions
• Resistant to UV rays, mildew, rot and abrasion
• Lifespan - up to 5 years for Type 1 and 5 -
10 years for Type 2
> Shape:
• Type 1: Pyramidal, wedge, convoluted, and laminated
• Type 2: All absorber confi gurations available
> Frequency band:
• From 125 MHz to 18 GHz
Absorber
WP Type 1 cross-section
Unloaded foam
> Operating conditions:
• From 0º to 200º F (-18º C to 93º C)
> Indoor/outdoor:
• Outdoor & indoor
> Treatment:
• Type 1: Wrapped with a weather resistant/
vinyl-nylon based cloth coating
• Type 2: Rubberized coating
> Related certifi cations:
• FS 191-5903
• MIL-C-43006
• NRL 8093 – 1, 2, 3
Adapted Absorbers
> Standard base size:
• 2’ x 2’ (60.96 cm x 60.96 cm)
> Height:
• 4’’ to 36’’ (10.2 cm to 91.4 cm)
• Type 2 up to 96” (243.8 cm)
> Ordering code:
• Type 1: AEP-XX-WP1, where XX designates absorber
height in inches
• Type 2: AEP-XX-WP2, where XX designates
absorber height in inches
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1/ Description of Type 1
Type 1 material is more physically robust. A standard pyramidal foam absorber is the base product. A low loss, unloaded front wedge is matched to the absorber, producing a rectangular shape.
The mating absorber “block” is then covered with a nylon-based textile that has high tear, mildew and UV resistance,
and superior abrasion resistance. All seams are glued with a vinyl adhesive and all side seams are stitched to ensure
long-term durability. This material expands and contracts with the cold and heat, and in high heat areas, a relief vent
is often added. Weatherproof Type 1 is intended for harsh use and is designed to withstand much more wear and
tear and repeated handling than regular absorber. Type 1 is not waterproof and while it will resist some rain, it is
recommended to store it under cover during storms or heavy rain. These materials can withstand UV and very harsh
weather conditions and have a life span of 1 to 5 years, depending on use and the local environmental conditions.
Storing the materials in a covered area when not in use can increase the life expectancy.
Specifi cations Type 1
AEP-4-WP1 AEP-6-WP1 AEP-8-WP1 AEP-12-WP1 AEP-18-WP1 AEP-24-WP1 AEP-36-WP1
Height in 4 6 8 12 18 24 36
cm 10.2 15.2 20.3 30.5 45.7 61 91.4
@ 500 MHz dB 20 25 27
@ 1.0 GHz dB 20 25 27 30 32
@ 3.0 GHz dB 20 23 27 30 35 35 40
@ 6.0 GHz dB 25 27 35 35 40 40 40
@ 10.0 GHz dB 30 30 40 40 40 40 40
Absorption
@ 15.0 GHz dB 35 40 40 40 40 40 40
@ Normal Incidence
@ 18.0 GHz dB 40 40 40 40 40 40 40
2
Power Watt/in
Watt/m
Weight lbs/pc. 1.2 1.5 2 2.5 3.5 4 7
kg/pc. 0.5 0.7 0.9 1.1 1.6 1.8 3.2
0.5 0.5 0.5 0.5 0.5 0.5 0.5
2
775 775 775 775 775 775 775
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2/ Description of Type 2
Type 2 utilizes AEMI’s rubberized coating technology, which is electrically neutral and therefore up to 10 dB better than any other weatherproof absorber on the market. Type 2 treatment provides a moisture barrier that is fully
weatherproof, resistant to chemicals, fl uids and petroleum while also being abrasion and puncture resistant. Type 2
can be permanently mounted, and the life expectancy of Type 2 will be increased if stored inside when not in use.
The rubberized treatment is applied to all sides of WP2, including the bottom. Due to this, it is rated for class 10,000
clean room environments.
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