[RTTY] More GRITTY observations

[Kok Chen]

I had described USOS in the "Unstructured Digital Modes" section of Chapter 16 of the ARRL Handbook , viz. a space character is considered to be an implicit LTRS shift by both USOS sender and USOS receiver.  This is why David G3YYD had mentioned that a LTRS shift after a space character is redundant.  It is only redundant when both sender and receiver use USOS,

Please use that information (i.e., USOS sender assumes that the receiver has shifted to LTRS shift after the sender transmits a space character) to generate your own scenarios.

73
Chen, W7AY