A.H. Systems AK-285R Betriebshandbuch - Seite 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.

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)