22 Mar
2012
22 Mar
'12
5:30 a.m.
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Hi Alexander,
the monster DAC was our first idea since it is already on stock. The
cost for sourcing and stocking a new part should never be
underestimated...
Also the 160MSPS allow us to interpolate e.g by 1:100 and then only
apply very simple post-DAC filtering, as the first mirror is very far
away.
Also 375MHz and up is a bit mood from my POV since our E4000 starts at
about 65MHz. The ham radio 144MHz band should be covered as should the
"NATO band".
Best regards,
Christian
On 21.03.2012 20:45, Alexander Chemeris wrote:
Hi Christian,
Why do you want 160MSPS DAC when you have only a USB connection?
IIRC USRP1 in 16-bit mode could not do more then 8MSPS (i.e. 4MSPS
in each direction).
Btw, for about the same BOM cost you could get a single chip
transceiver we use for UmTRX
(http://www.limemicro.com/lms6002d.php). Though its tuning range
is a bit higher - 375MHz-4GHz, so it doesn't fit if you need
frequencies below 375MHz.
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