Yes, Chen, you are correct, I goofed in case #8. Just a test of
your keen powers of observation, eh? <grin>
Meanwhile, I was advised that:
> The "UOS" button on the MMTTY main window affects only receive. It
> simply treats received text as if there were a LTRS character after
> every space. Overhead: none. It has no effect on transmitted text.
> In the MMTTY Setup window under the TX tab, in the top centre "TX" pane,
> the first check box is labelled "UOS". When this is checked, MMTTY will
> send a FIGS character whenever a FIGS case character is to be sent
> immediately following a space. Overhead: 1 extra FIGS character inserted
> into every "<number><space><number>" combination. Incidentally, the
> description of this TX UOS option in the MMTTY Help file is inaccurate;
> it suggests that LTRS is also inserted into the transmit string between
> a space and a letter, but a bit of experimenting demonstrates that this
> is false - the only extra characters inserted by this option are FIGS
> characters before numbers.
So, how does that affect my USOS conception? If there an effect?
73 de Phil - N8PS
----------------------------
Quoting Kok Chen <chen@mac.com>:
> Phil N8PS wrote:
>
> > USOS TX off USOS RX off USOS TX off USOS RX on
>
> Phil, I don't think you will find many people who turn USOS on for
> receive but turn it off for transmit and vice versa. As an example,
> cocoaModem does not even allow you to do that (USOS is a "universal
> preference" that is applied to both receive and transmit directions in
> cocoaModem), perhaps there are software that will?
>
> For obvious reasons, transmitting and receiving Mark/Space polarities
> in RTTY need to be independently selectable, but in the case of USOS,
> I am not sure there is any advantage of using USOS in one direction
> and not using USOS in the other direction. The 16 cases that you
> listed show that it a complete mess if people were allowed to
> independently use USOS for the two directions.
>
> By the way, the 8th case that you listed is a dupe; you probably meant:
>
> USOS TX off USOS RX *ON* USOS TX on USOS RX on
>
> 73
> Chen, W7AY
>
>
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