In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation.

रेडियो संग्राही एक विद्युत परिपथ है जो विद्युतचुम्बकीय तरंगों के रूप में उपलब्ध संकेतों को एंटेना के द्वारा ग्रहण करने के बाद इसका सम्यक प्रसंस्करण करते हुए अन्त में ध्वनि या किसी अन्य उपयोगी रूप में प्रस्तुत करता है।