https://joy.videvo.net/videvo_files/video/free/2014-12/large_watermarked/Vintage_Portable_Radio__Turning_Freq_Knob_preview.mp4 Vintage Radio Frequency Knob A close-up of someone turning the frequency knob on a vintage portable radio. 1080pamantiqueaudiobandbroadcastingfmfrequencyfrquenciesmusicoldradioscanscannerscanningsoundvintage