A list of puns related to "Sky High Aviation Services"
Seems strange to me that control towers and pilots, as well as police/emergency services still use radios that are half-duplex, so you can't listen and talk at the same time. And you have to press a button and keep it pressed while you talk. Seems incredibly antiquated.
Why haven't they switched to a digital system that uses separate frequencies for transmitting and receiving, like cell phones. Or use time division multiplexing like Wi-Fi.
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