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A.H. Systems Model EHA-51B Active Monopole and Loop Antenna
SPECIFICATIONS
GENERAL DESCRIPTION
The A.H. Systems EHA-51B Antenna is an active, general-purpose, receive-
only antenna that covers 1 KHz - 60 MHz. This antenna has a switchable front
end for receiving as a monopole or loop antenna.
As a monopole antenna it is ideal for instantaneous bandwidth scanning
(without tuning) of electric fields in its frequency range and can drive any
receiver with 50-ohm input impedance.
The EHA-51B is also an active receive only loop antenna for magnetic field
testing. This loop antenna is ideal for emissions testing and has a balanced
Faraday shield to reduce the E-field response for a pure magnetic field
measurement. It is suitable for MIL-STD, VDE, and TEMPEST testing, with
reliable, repeatable measurements.
Review this manual and become familiar with all safety markings and
instructions.
ANTENNA SPECIFICATIONS
EHA-51B Monopole/Loop Antenna specifications:
A.H. Systems inc. – Oct 2017
REV B
Frequency Range ....................................................1 kHz – 30 MHz
Impedance ...........................................................................50 ohms
Output Connector Type ..........................................................BNC(f)
Mounting ....................................................................1/4-20 Tread(f)
Weight ...................................................................2.5 lbs. (1.13 kg)
Loop Diameter ..............................................................12" (30.5cm)
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