У вашего броузера проблема в совместимости с HTML5
In this video, we take a look at the SOCOTRAN ST-7900D Quad Band Radio. This radio works on:
136-174 MHz
220-250 MHz
350-390 MHz
400-480 MHz
From the description of the radio, it appears it will both transmit and receive on the above frequency ranges. I am not sure how this Radio is licensed, so purchase and use at your own risk. If you do, I recommend staying within the frequency ranges that you are licensed for.
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Until next time,
73 de Curtis, K5CLM