Your contact partner for this product is: Michael Hirschmueller ǀ +49 9078 9695-95 ǀ

Switching unit


The switching unit is used for direct switching of HF signals in the frequency range DC … 430 MHz.


The switching unit is housed in a 3 U 19“ subrack with very good RF shielding and consists of the following sub-assemblies:

-    relay switches SPST with internal termination
-    relay switch DPDT
-    termination resistor 100 Watt
-    power supply modules

All the necessary signal, power supply and earthing connections are provided at the rear.
The mains switch is located on the front panel.


The unit is controlled directly via a control voltage.

Special features

The unit is constructed using a modular approach utilising 19” plug-in sub-assemblies which enable ease of installation and maintenance.

Technical datameasured at 25 °C
Configuration:5 switches SPST with internal termination
1 switch DPDT
1 termination 100 Watt
Switching specifications
Impedance:50 Ohm
Frequency range:DC … 430 MHz min.
Insertion loss:0.5 dB max.
VSWR:1.3 : 1 max.
Isolation:60 dB min.
Input power:
SPST10 Watt
DPDT100 Watt
Termination100 Watt
Switching elements:failsafe relays
Switching time:
SPST10 ms max.
DPDT20 ms max.
Switching cycles:1 million min.
Further specifications
Control:direct, control voltage 5 … 20 VDC
ConnectorD-Sub male, 15-pin
RF connctor:
SPSTBNC female, 50 Ohm
DPDTN female, 50 Ohm
TerminationN female, 50 Ohm
Power supply:195 … 264 VAC, 47 … 63 Hz
Connector3-pin, with mains filter and fuses
Mains switch:with integrated lamp
Temperature range:
Operating0 … 50 °C
EMC:in accordance with European standard EN 55022 and EN 50082-1/2
Height3 RU
Depthabout 360 mm (without connectors)
Front panel:painted light grey (RAL 7032)