Message-ID: <3E0C8F57.5030606@usa.net>
Date: Fri, 27 Dec 2002 18:35:19 +0100
From: "Alberto di Bene" <dibene@usa.net>
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To: rsgb_lf_group@blacksheep.org
References: <004e01c2adb2$7c500c80$b7bdfea9@nnn0hus>
Subject: Re: LF: Re: ZL6QH test Dec27
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Thomas Giella, KN4LF wrote:

>  I must have done my frequency scale calibration wrong as I received
>nothing here. I left the "Measured" and "Displayed"
>columns with the default 1000 in them and placed 13770891 in the offset box,
>as my BFO offset is 700 hz. Was this wrong?
>I'm still learning how to use Argo.
>
>  
>
Thomas,
        you did forget the decimal point.
If I read correctly, you typed 13770891, but you should have typed 
137708.91 (note the point)
And, in any case, the value to specify in the offset field is the value 
corresponding to the zero
beat on your Rx.  E.g.  if you tune the Rx in USB mode to 137000, then 
of course the zero beat
will be at this frequency. When you receive a signal of, let's say, 
137450.8 Hz, then you will
have a tone of 450.8 Hz.  If you don't set the offset field in Argo, 
then this tone will be displayed
as 450.8 Hz. You can accept this, or, if you prefer to have the true 
frequency displayed, set the
offset field in Argo to 137000. Then,  you will see that tone displayed 
at 137450.8 Hz, its true
frequency.   Hope to have been clear enough.

73  Alberto  I2PHD