[hpsdr] CPU board for HPSDR

[Sheldon Hands]

----- Original Message ----- 
From: "Aivars Straupe" <yl2gvc at inbox.lv>

> I want to start new discussion about CPU board for HPSDR.
> I found on internet few interesting solutions from www.compulab.co.il

> There are few problems with this solutions:
> 1.they are not cheap, I could say, expensive;
>    73! 
> Aivars.




The problem is you are looking at industrial type motherboards and corperate 
pricing.

If the Mini Itx motherboard format is small enough  (170mm x170MM) for you 
then Intel, Asus etc offer consumer motherboards that are quite inexpensive.

I had hoped to finish my stand alone HPSDR with the DG945GCLF2 Dual core 
N330 as detailed on the Wiki. However my birthday present from the Jnr Op 
was in fact a  Mini Itx Intel 945GCLF single core N230 Atom board.

This N230 single core  is priced at 48 pounds including Vat in the UK and 
the N330 dual core is 61 Pounds.

I am quite impressed with the little 230,  Its much faster than than my old 
P4 Pentium 2.4Ghz machine  even with a full Windoze install!!!. This may in 
part be due to the 64 bit and hyper threading.  Power SDR is using 38% at 
192K, 20% at 96k and a meagre 10% at 48K. Its happy on normal process 
priority and only maxes out at 68% when draging the tunning window.

I have fitted it all in a Midi tower the lower half is the Radio  with Atlas 
with Oz ,Pen and Merc in the front quarter and a 100W amp with LPF/HPF in 
the back. The top half has the Mini ITx fitted horizontal with PSU above  in 
its normal posistion  and the normal front fitted trays and bays for HDD and 
DVD.

I only finished the install an hour back  so lots more testing to do but 
first impressions are very good.

Shel CT1IZU



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