[linrad] Re: Computer hw for linrad

[Leif Asbrink <sm5bsz.com; leif@xxxxxxxxxxxxxxxx>]

Hello Georg,

> As I'am going to become a fulltime ham, I have to update my computer and
> to learn linux/ubuntu. Therefore I would like to know if anybody could
> give me a hint to following questions:
> 1. Which cpu and type of board should I collect?
Traditionally, Linrad is an SDR receiver only. Any hardware 
you could find on the market today would be 100% OK.

With 02-37 and later there is also a transmitter in the package.
At the moment network does not work simulataneously because the
call sendto(...) that the network uses will disturb the tx routines
for reasons that I currently have not investigated. 

Most probably a multi-core platform would not have any such problems
since the call to sendto(...) would not lock up more than one 
core.

Whether this means that you should go for an Intel Duo or some other
multi core solution or whether (as in the "old days") anything would be
fine I do not know.

> 2. Is the delta44 sound card still the favorite one, or is there
> nowadays a better one available (e.g. by HPSDR)?
I am sure better cards are available, the A/D converter of the
Lynx Two is much better although the soundcard is useless because 
of the way Lynx Two derives its sampling clock. HPSDR should be
much better, but I have not had a chance to verify that everything 
is operating properly.


> 3. Amount of memory( 1Gbyte or more)?
This depends on what you want to do.

> 4. Which development tools are necessary if I will write add-ons (C is
> not a problem for me)?
It will be automatically available for you under Linux - and is is very
easily available under Windows. Ebverything is described here:
http://www.sm5bsz.com/linuxdsp/linrad.htm

Compilers and the make utility for Windows are available from the site.
Under Linux they are included in the standard packages.

 73

Leif / SM5BSZ


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