A.H. Systems AK-285R Manuel d'utilisation - Page 9
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A.H. Systems AK-285R Shielding Effectiveness Antenna Kit
Double Ridge Guide Horn Antenna
High gain, low VSWR, input handling capability
up to 300 watts CW, and rugged design make
this horn antenna excellent for both immunity
Features
• Broad Frequency Range of 700 MHz to 18 GHz
• Linearly Polarized High Gain, Low VSWR
• Individually Calibrated
• Three year Warranty
The SAS-571 Double Ridge Guide Horn Antenna is lightweight, compact and has been
manufactured for maximum gain, low VSWR and broadband response. The double ridge
guide horn antenna was initially designed for surveillance where a high gain broadband
response was required.
Assembly:The horn antenna comes assembled and ready to use. The antenna mounting
bracket is attached to the antenna backwards in order to fit in the carrying case. The
bracket must be removed from the antenna, rotated (so that the bracket leg faces away
from the antenna), and re-attached to the antenna. (The bracket is not needed for
mounting if the tripod being used has an Azimuth/Elevation Head.)
Operation: Attach the antenna to the tripod azimuth and elevation head through the
threaded hole on the antenna bottom or the threaded hole in the mounting bracket. The
ridge guides determine the antenna polarity: for horizontal polarity they should be parallel
to the ground and for vertical polarity they should be perpendicular to the ground. Connect
a cable between the antenna connector and the receiver.
© A.H. Systems inc. – August 2011
REV A
SAS-571
700 MHz – 18 GHz
and emissions testing.
Frequency Range: 700 MHz - 18 GHz
Antenna Factor: 22 to 44 dB
Gain (dBi): 1.4 to 15 dBi
Maximum Continuous Power: 300 Watts
Max Radiated Field: 200 V/m
Pattern Type: directional
3dB Beamwidth (E-Field): 48°
3dB Beamwidth (H-Field): 30°
Impedance: 50
Connector: N-Type, female
Mounting Base: ¼ - 20 Thread, female
VSWR: 1.6:1 (3.5:1 max)
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