so length with - is shorter but readibility is higer with space
ufb for the error explanation i learned a lot from you again
gl
bostjan s55o
15. feb. 2018 9:59 PM je oseba "David G3YYD via RTTY" <rtty@contesting.com>
napisala:
> The other advantage of using space is it forces another figs shift so if
> FIGS1234-1234 had corrupted FIGS by 1 bit to J then received is JQWERAQWER
> but using space would get JQWER 1234. Saves doing the mouse pointer hover.
>
> The one bit corruptions of FIGS are J, B, W, G. So when my callsign prints
> as GWEYYD W is 1 bit corruption of figures quick look at keyboard says E is
> 3 so you have my call without asking for a repeat. I often use this. Just
> as
> we all know TOO means 599.
>
> It is worth remembering 1 bit corruption of FIGS as they happen so often.
>
> An aside LTRS 1 bit corruptions are ( ; 1 / Future release of 2Tone in
> contest mode will map ( and ; to LTRS reducing this source of errors
> unfortunately contesters use 1 and / Still fixing 50% of the LTRS 1 bit
> corruptions is better than none. Can't map FIGS shift as all the LTRS case
> characters are used.
>
> 73 David G3YYD
>
> -----Original Message-----
> From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Bostjan
> Voncina
> - S55O
> Sent: 15 February 2018 20:27
> To: David G3YYD
> Cc: RTTY Reflector
> Subject: Re: [RTTY] Minus sign to space serial numbers
>
> what about length?
> 599 1243 1243
> or
> 599 1243-1243
>
> what is the difference?
>
> space does need a ltr/fig ? or it does not need that?
>
> thx and keep on the good info david.
>
> gl
> bostjan s55o
>
> 15. feb. 2018 5:40 PM je oseba "David G3YYD via RTTY" <rtty@contesting.com
> >
> napisala:
>
> > I wonder how many of you who use this technique realise why it is not
> > a good idea?
> >
> > The - (minus sign) is 1 corrupted bit away from 3, 2, \ and Line Feed.
> > So a
> > 1 bit corruption will often result in a repeat request.
> >
> > Space character a 1 bit error goes to , (comma), ' (quote), #, NULL
> > (5 bits of space tone). Much better to use space as human can see it
> > and work out what the serial number is.
> >
> > 2Tone avoids the NULL error as that is mapped to space character. Been
> > like that for years. NULL is also known as BLANK.
> >
> > So better to send 599 1234 1234 than 599-1234-1234
> >
> > 73 David G3YYD
> >
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