Medium wave (MW) is a part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the daytime, reception is usually limited to more local stations, though this is dependent on the signal conditions and quality of radio receiver used. Improved signal propagation at night allows the reception of much longer distance signals. This can cause increased interference because on most channels multiple transmitters operate simultaneously worldwide. In addition, amplitude modulation (AM) is often more prone to interference by various electronic devices, especially power supplies and computers. Strong transmitters cover larger areas than on the FM broadcast band but require more energy and longer antennas. Digital modes are possible but have not reached momentum yet.

मध्यम तरंग (MW) जो हैं, वे मध्यम आवृत्ति (MF) रेडियो पट्टी का हिस्सा है, जो कि आयाम अधिमिश्रण या Amplitude Modulation के प्रसारण हेतु प्रयोग होता है। अधिकतर विश्व के भागों में इसके प्रसारण हेतु 520 kHz से लेकर 1611 kHz, की आवृत्तियाँ प्रयोग होतीं हैं। इस पट्टी को कभी कभी ए एम पट्टी भी कहते हैं, जबकि केवल आवृत्ति पट्टी नहीं है, जो कि ए एम हेतु प्रयोग की जाए।