EHA-50B Matching Preamplifier (100 Hz – 30 MHz)

Model: EHA-50B

Matching preamplifier for H-Field rods

100 Hz - 30 MHz

For applications where high sensitivity is required, A.H. Systems set of H-Field Rods provides an accurate standard for magnetic field testing.

Features

Frequency Range: 100 Hz to 30 MHz.
Optimized for high-accuracy magnetic field measurements.
Battery-powered for enhanced field mobility.
Suitable for MIL-STD, VDE, and TEMPEST testing protocols
Backed by a standard three-year warranty.

Availability Only 1 left in Stock
(typical Lead time: 2 to 3 weeks)

The availability information was last updated on 14-Apr-26. This availability is subject to prior sale.

EHA-50B Matching Preamplifier: High-Sensitivity Magnetic Field Testing

The A.H. Systems EHA-50B is a specialized low-input impedance preamplifier engineered specifically to match the H-Field Rod antenna series. Operating efficiently across a broad frequency range of 100 Hz to 30 MHz, this preamplifier is a critical component for achieving the high sensitivity required in MIL-STD, VDE, and TEMPEST compliance testing.

Designed for portability and precision, the EHA-50B is battery-operated, allowing for field use without the need for external power cords. It provides the necessary signal gain and impedance matching to convert magnetic field components captured by ferrite rod elements into reliable, repeatable voltage measurements. Each unit is individually calibrated to ensure verified accuracy when paired with A.H. Systems H-Field Rod antennas.

Included parts:

EHA-50B Antenna Matching Preamplifier
Battery Charger
Calibration Manual

* Calibration data and certificate included

Specifications

Frequency Range:	100 Hz - 30 MHz
Output Impedance:	50 ohm
Connector:	BNC, female
Mounting Base:	¼ - 20 Thread, female

Shipping Information:
Carton size: 12" x 9" x 7"
Shipping Weight: 5 lbs.
* These are approximate dimensions and will vary depending on other items ordered.