Talk:Autocab

This example is not correct. A lot of taxi cabs use MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office.'s and other equipment to relay their data. And most of it is not tailored to PSKPhase-Shift Keying, including this mode. MDC4800, 9600 and RDLAP protocols are the most used in these contexts.

This example also is not correct in modulation. It uses a form called "MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.)-FMFrequency Modulation" a similar form of AFSKAudio Frequency-Shift Keying but has matching characteristics to MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.). Therefore, the marks and spaces are, in this context, 1/3 off at 1200/1800, causing the smooth spectrum and phase continuity. This is not actual PSKPhase-Shift Keying, but a form of of the modulation as its perfectly continuous. MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.) is also used in MDC1200, MPT1327, but they describe that with their own incorrect standard modes by saying "FFSKFast Frequency-Shift Keying" or "Fast-frequency shift keying" >> whereas they go on to talk about the FFSKFast Frequency-Shift Keying being a characteristic where the **data and preambles repeat at a fast rate.** THATS NOT WHAT IT MEANS. FFSKFast Frequency-Shift Keying is to describe the actual bitrate of FSKFrequency-Shift Keying acheived at more than 9600 bits/sec. Which isnt usually used except maybe in D-STAR or PACKET 9600, those ham modes. -> Yalek W (talk). 11/20/2021 23:36.