The New Series 624 range of Motorised System Attenuators offer high performance at a competitive cost.

Flann’s range of Series 620 Programmable Attenuators have set the standard and found favour for many demanding applications including metrology and high accuracy automated testing such as in the production testing of point to point radios.

Building on the success of the RS485 version of the Series 624, Flann now offers a Power over Ethernet version. As well as the advantages that come with the ability to send commands over an Ethernet connection, the instrument fully complies with the IEEE 802.3af Class 0 specification and therefore allows both power and communication through a single connector.

The Series 624 Motorised Variable Attenuators utilise the proven rotary vane principle and proven high accuracy over the full waveguide band


  • 8.0 GHz to 110 GHz
  • 0dB to 50dB
  • High Reliability
  • Low Cost
  • Attenuation Accuracy <0.1dB or 2% (which ever is the greater)


  • Fade Margin Testing
  • Low Cost Testing
  • Bit Error Testing