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Re: [linrad] users_extra

Hi, Leif,

I was going to send you an email with this question, but figured I'd ask  
it here.  With my new install of 01.22 [I know I am 2 versions behind; I  
will fix that this week if I have time] on my PIII [the one with the noisy  
power supply, which will be replaced as soon as the new one arrives] I  
find that if I click on the W3CCX beacon, which is at 60 dB signal  
strength [well above the 'weak signal realm'] the signal 'blows up' and  
widens markedly in frequency on the main waterfall.  It is still copyable,  
but very wide on the waterfall.  If I click away from it, it goes back to  
its previous narrower width.  I tried playing with the blue and red bars  
at the left of the baseband graph but this didn't fix things.

I haven't used Linrad much since the ARRL EME contest last year, and my  
memory is a bit dim on its nuances.  I recall that this may be expected  
behaviour, and a result of using the tool in a way that is not intended,  
and which doesn't make much sense [using it for very strong signals in the  
weak cw mode].  Nevertheless, because I will be using it on HF where there  
are much stronger signals mixed in with weaker ones once the HF module is  
available, and because I'd like to be able to switch back and forth  
between the weak signal portion of the band and the beacon without  
changing modes, I wonder what I can do to change this behaviour.  I assume  
it is due to the way I have some parameters set, but which one[s] to  
change isn't immediately obvious to me.  So I figured I'd ask the question  
which might be apropos to others, as well, rather than just fiddling for  
an afternoon at the computer. ;)

I am using the Delta 44 for input and a SoundBlaster for output and I have  
all the FFT's enabled.  It doesn't matter whether or not I have the AGC on  
as regards this behaviour.

Thanks in advance for your comments,

Roger Rehr

On Tue, 7 Sep 2004 14:25:53 +0200, Leif Åsbrink  
<leif.asbrink@xxxxxxxxxxxxxxxx> wrote:

> Hi All,
> Linrad is not very verbose, screen space is often a limited resource.
> Linrad-01.24 looks for a file: "users_extra.c".
> You may use routines in users_extra to write your own things on
> the screen. Things like current mode, date and time, frequency
> and s-meter etc. Your own stuff will not be overwritten if you
> update Linrad with a newer version.
> Linrad-01.24 also solves a problem that may occur when ALSA is
> used together with slow graphics (VESA under svgalib-1.4.3)
> 73
> Leif

Roger Rehr