Message-ID: <3C4AF58E.1DBA778B@usa.net>
Date: Sun, 20 Jan 2002 17:51:26 +0100
From: "Alberto di Bene" <dibene@usa.net>
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To: rsgb_lf_group@blacksheep.org
Subject: LF: Re: Questions  about Jason.
References: <GLEGLGAGDDGENELKGHIJIEAPDMAA.paulc@snet.net>
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"Paul A. Cianciolo" wrote:

>  Alberto and group,
>
> What happens to JASON when he has a screen full of data?
>
> Does it scroll off the page?..
> Can it be recovered?

Paul,
  the text scrolls up outside the top of the screen, and, no, it
cannot be recovered.

> JASON looks like it will print out at about a letter ever 10 seconds or so.

The timing is a letter every 24 seconds (roughly), for a throughput
of  2.5 characters per minute

> Alberto,,  will there be a version of this program with longer segment
> length to allow for longer integration of the signal ?

Yes, it can be done, as it can be done a faster version for HF and up...
Whether there actually will be such a version, it's a bit too early to say.

> Also might you explain to us how much faster in character speed this mode is
> than QRSS 60?

Rik ON7YD is much expert than me in QRSS speed calculations, but let's try :
suppose I want to send   CQ DE I2PHD
Unless my computation is wrong, that amounts to a total of 106 dot lengths,
so the time needed is the following :
QRSS3     106 x 3   = 318 seconds, i.e.   5 minutes, 18 seconds
QRSS10   106 x 10 = 1060 seconds, i.e. 17 minutes, 40 seconds
QRSS60   106 x 60 = 6360 seconds, i.e. 1 hour, 46 minutes
Jason         12 characters / 2.5  =  4 minutes, 48 seconds

I leave to Rik the computation for DFCW...

73  Alberto  I2PHD