Chen,
As usual, I'm confused by USOS and the functionality between stations.
I understand there are only 16 possible combinations. -See below
Is there an easy explanation of the best way to set your (my) station so as
to work best with the four (4) possible combinations used by any other
station?
Thanks Chen,
73 de Phil - N8PS
STATION #1 STATION #2
SENDING RECEIVING SENDING RECEIVING
USOS OFF USOS OFF USOS OFF USOS OFF
USOS OFF USOS OFF USOS OFF USOS ON
USOS OFF USOS OFF USOS ON USOS OFF
USOS OFF USOS OFF USOS ON USOS ON
USOS OFF USOS ON USOS OFF USOS OFF
USOS OFF USOS ON USOS OFF USOS ON
USOS OFF USOS ON USOS ON USOS OFF
USOS OFF USOS ON USOS ON USOS ON
USOS ON USOS OFF USOS OFF USOS OFF
USOS ON USOS OFF USOS OFF USOS ON
USOS ON USOS OFF USOS ON USOS OFF
USOS ON USOS OFF USOS ON USOS ON
USOS ON USOS ON USOS OFF USOS OFF
USOS ON USOS ON USOS OFF USOS ON
USOS ON USOS ON USOS ON USOS OFF
USOS ON USOS ON USOS ON USOS ON
Quoting Kok Chen <chen@mac.com>:
On Apr 27, 2015, at 8:41 AM, David G3YYD wrote:
One thing I noticed is some transmissions that always send a ltrs shift
after a space character. What a waste of transmission time and the extra
unnecessary characters adds to the potential for errors. Anyone know which
software/hardware is doing this?
There is actually a rational reason for this. Especially outside a
contest, where the millisecond counters don't thread :-).
If you are sending USOS, and the other end receives with a non-USOS
decoder, the extra LTRS shift avoids the infinite loop of "AGN? AGN?
from people who don't know how to interpret "TOOQWE."
The extra LTRS shift makes the sender compatible with both USOS and
non-USOS receivers. It might be the only way to ensure
interoperability between USOS and non-USOS (though I haven't spent
that much time in the past to come up with other solutions).
Perhaps a more optimal way to ensure USOS interoperability is to
send extra LTRS only when repeating an exchange to the same caller.
If I were using USOS, I would use the extra LTRS when calling a
DXpedition. Who knows what they are using.
73
Chen, W7AY
_______________________________________________
RTTY mailing list
RTTY@contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
_______________________________________________
RTTY mailing list
RTTY@contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
|