--- title: What is a QMA Connector? description: QMA connectors offer snap-on locking and 360° rotation — but they're not SMA. Spec guide for “All-band” public safety radios from Motorola and Harris. image: https://blog.arcantenna.com/hubfs/Gemini_Generated_Image_dxyaqsdxyaqsdxya.png --- [Skip to content](https://blog.arcantenna.com/blog/what-is-a-qma-connector#main-content) [![Arcadian](https://blog.arcantenna.com/hs-fs/hubfs/Logos/Arcadian-Logo.png?width=300&height=70&name=Arcadian-Logo.png)](https://www.arcantenna.com/) Open main navigation Close main navigation - [Contact us](https://www.arcantenna.com/pages/contact-us) [Contact us](https://www.arcantenna.com/pages/contact-us) 1. [Home](https://www.arcantenna.com/) 2. / 3. [Blog](https://blog.arcantenna.com/blog) 4. / 5. What is a QMA Connector? # What is a QMA Connector? [Michael Crudele](https://blog.arcantenna.com/blog/author/michael-crudele) · Apr 1, 2026, 11:43:42 AM · 2 min read · [SMA-Female](https://blog.arcantenna.com/blog/tag/sma-female) [Connectors](https://blog.arcantenna.com/blog/tag/connectors) [QMA-Female](https://blog.arcantenna.com/blog/tag/qma-female) ![What is a QMA Connector?](https://blog.arcantenna.com/hs-fs/hubfs/Gemini_Generated_Image_dxyaqsdxyaqsdxya.png?width=400&height=220&name=Gemini_Generated_Image_dxyaqsdxyaqsdxya.png) When trying to match an antenna to a radio, gateway, or modem, it is important to verify the connectors you need. In a recent case, a customer was unable to distinguish a **QMA** from an **SMA** connector. This is understandable, considering the following: Many of the new “All-band” public safety radios from **Motorola** and **Harris** have QMA connectors. The QMA is a “quick-disconnect” version of the SMA connector. The QMA was developed as **snap-on**, locking replacement for the standard 50 ohm SMA connectors. It has the same internal construction as an SMA connector and exhibits**similar RF performance** characteristics and mechanical durability. The main difference is that QMA connectors feature a 360º rotating snap-on locking interface that is quick to install, has **low RF leakage** and is suitable for use up to**6 ghz**. See the image below: ![Gemini_Generated_Image_dxyaqsdxyaqsdxya](https://blog.arcantenna.com/hs-fs/hubfs/Gemini_Generated_Image_dxyaqsdxyaqsdxya.png?width=214&height=213&name=Gemini_Generated_Image_dxyaqsdxyaqsdxya.png) Need a QMA connector, adaptor, or accessory? [**Click here to view our collection**.](https://www.arcantenna.com/collections/search-results?type=product&q=qma) Share this post [mailto:?subject=%3Cspan+id%3D%22hs_cos_wrapper_name%22+class%3D%22hs_cos_wrapper+hs_cos_wrapper_meta_field+hs_cos_wrapper_type_text%22+style%3D%22%22+data-hs-cos-general-type%3D%22meta_field%22+data-hs-cos-type%3D%22text%22+%3EWhat+is+a+QMA+Connector%3F%3C%2Fspan%3E&body=https%3A%2F%2Fblog.arcantenna.com%2Fblog%2Fwhat-is-a-qma-connector](mailto:?subject=%3Cspan+id%3D%22hs_cos_wrapper_name%22+class%3D%22hs_cos_wrapper+hs_cos_wrapper_meta_field+hs_cos_wrapper_type_text%22+style%3D%22%22+data-hs-cos-general-type%3D%22meta_field%22+data-hs-cos-type%3D%22text%22+%3EWhat+is+a+QMA+Connector%3F%3C%2Fspan%3E&body=https%3A%2F%2Fblog.arcantenna.com%2Fblog%2Fwhat-is-a-qma-connector) ### Subscribe Get the latest antenna and RF insights delivered to your inbox. ### Recent Posts - #### [![RFID Reader Antenna Basics - Overcoming Fading with Antenna Diversity with Antenna Diversity](https://cdn.shopify.com/s/files/1/0345/4055/2323/files/uhf_rfid_system_480x480.png?v=1623767287) RFID Reader Antenna Basics - Overcoming Fadin... 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