Hytera Unveils P60 Smart PoC Radio to Empower Mission-Critical Communications ...
5d
Anker’s Portable Bluetooth Speaker Costs 10 Times Less Than Bose, Amazon Has It for Pocket Change
This waterproof speaker delivers 24-hour battery life and bass that defies its size.
Abstract: An underwater portable radio antenna operating in the 50 MHz band and efficient for launching surface electromagnetic waves at the seawater/air interface is presented. The antenna operation ...
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