[aprssig] Argent open tracker
wa7nwp at gmail.com
Thu Jul 14 11:04:49 CDT 2016
> Thats my point - they want to act at RS232 but they can only go TTL levels.
> RS232 height would be > 7 volts
> RS323 height would be < 7 volts
> RS232F is VCC
> RS232F is 0 Volts
That's why you need the inverter Tom mentioned. The Levels aren't
critical - at least not for typical applications. The data is
'inverted' and that is critical.
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