NSI introduces the Quick Disconnect Rotator (QDR) as a convenient and low cost alternative to automated probe/source antenna polarization stages, for use on all antenna test ranges.The QDR consists of two pieces, one that attaches to the probe or source antenna and the other that attaches to the near-field scanner or source antenna stand.The two pieces allow for a sexless RF mating and subsequent rotation of the probe or source antenna.The QDR therefore allows for quick and accurate manual polarization rotation and also probe interchange without the requirement for tools or cable connections.The QDR has an integrated rotary joint and is suitable for use up to 40 GHz. You can buy additional QDR probe pieces for each of your probes, allowing probes to be swapped in seconds.The maximum weight recommended for the QDR is 5 lbs., and it can therefore support NSI standard probes down to about 2.6 GHz (WR-284) or you can consider NSI's lightweight probe options.

Due to the nature of this rotary joint the QDR does not offer the same quality RF performance as a conventional sealed unit rotary joint, and therefore users have to assess the trade-off between the convenience of the QDR and slight performance degradation.Typical performance of the QDR on rotation and reconnection will be +/- 0.1 db and +/- 1.5 degrees.