Amphenol RF QMA Adapters

Amphenol RF offers a variety of QMA adapters with both in-series and between series options available. These quick-locking adapters feature an innovative snap-on coupling mechanism that allows them to be installed into a system ten times faster than the similar SMA interface. There is no requirement for wrench clearance, which dramatically reduces the pitch. Once QMA adapters are mated, they can be rotated 360° to improve the flexibility of the installation. 

Designed with the same internal construction as the SMA series, Amphenol RF QMA adapters provide low loss RF performance up to 18GHz. The high power handling capability makes these adapters ideal for base stations, 5G wireless infrastructure and a wide range of test and measurement equipment.


  • Frequency range up to 18GHz
  • Snap-on interface for quick and easy installation
  • Rotates 360° after connection for flexibility with installation


  • Antennas
  • Base stations equipment
  • 5G wireless infrastructure
  • Amplifiers
  • Test and measurement
Published: 2012-06-18 | Updated: 2022-03-11