Schwarzbeck FSE3D Isotropic 3-axial RX Antenna

The Schwarzbeck FSE3D consists of three identical, active broadband dipoles, which are aligned perpendicularly to each other. A shielded unit follows, containing the switching and amplifier circuitry, which is directly connected to the N-male output and fed by the Binder-connector with power supply and logic signals to select the desired dipole. The pin assignment is ready for operation with the popular handheld spectrum analyzers FSH 3/6 and FSH 4/8 from Rohde & Schwarz. A RF-transparent radome cover protects the FSE3D from dust and moisture. Because of its lightweight construction the FSE3D can be directly mounted to the spectrum analyzer. Alternatively the FSE3D can be held manually at its 50 mm shaft (sweeping method) or attached to a mast or tripod using the 22 mm tube (rotation method or raster method).

Schwarzbeck FSE3D Control:

The active broadband dipole can be selected using the spectrum analyzer. Only one of three broadband dipoles can be active at a time. The logic signals are labeled with TTL1 and TTL2. a logical 1 is represented by a voltage of 3.2 - 5 V.

The alignment of the receiving-planes can be seen in the picture below. The maximum field strength indication of a respective broadband dipole is achieved with the electric field lines going perpendicularly through the receiving-plane.

Binder 99-0421-10-07 Serie 712
Pin 1	+5 V, max. 100 mA
Pin 4	GND
Pin 5	TTL1
Pin 6	Connected to Pin 1
Pin 7	TTL2

TTL1 TTL2 Dipole 1 1 0 Dipole 2 1 1 Dipole 3 0 1 Reset 0 0

Schwarzbeck FSE3D Optional Connector:

On demand, the FSE3D can be delivered with a connector of the ODU-MINISNAP series. The interlock claws allow disconnecting the plug faster.