Rtlsdr

ទាំងអស់GIFស្ទីគ័រត្លុក
a computer screen shows a spectrum of a signal with the numbers 137 400 m and 137 600 m visible
a man wearing a headset and a microphone is sitting in a stadium .
a computer screen shows a wavelength of 137.075m
a blue background with a white graph and the words gute laune