Message-ID: <39104E84.1C401FE5@usa.net>
Date: Wed, 03 May 2000 18:06:28 +0200
From: "Alberto di Bene" <dibene@usa.net>
Organization: Undisclosed
MIME-Version: 1.0
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: IK1ODO beacon signal
References: <4.1.20000502221259.02234f10@mailer.inrete.it>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 8bit
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Sender: <majordom@post.thorcom.com>

>>Further I noticed that launching another application while running Spectran
>>caused a kind of 'frequency shift' (see screenshot at my webpage).
>>
>Alberto found this same problem, but he says that debugging will be difficult,
>and will probably take some time. Incidentally, he is releasing a new "beta"
>version (beta3).

Just to straigthen things a bit up :  we are talking of two different problems :

1) The frequency error Marco is talking about, is known to me since some time,
    and it is caused by a wrong initial design assumption of Spectran,  i.e. that the
    frequency ruler scale must start at an integral multiple of 1 Hz. This because at
    that time Spectran was meant for EME use, where sub-Hertz resolutions are not
    needed. Now that with beta 3 we can do down to 21 milliHz, this must revised.

2) The frequency shift observed and reported by Rik and Alan, is a completely new
    thing, for which, at the moment, I have no explanation. I saw, one time only, a shift
    of 0.5 Hz, which I attributed to my RX. I wasn't launching or using any other
    application at the moment. As this shift has been signalled by more than one person,
    and on signals locked to some standards, then I must investigated into it.

Thanks for those reports, and don't be shy to send others. The very first reason for
putting out a beta before the final release was just to receive this kind of reports.

73s
Alberto    I2PHD
-----------------