Iban Cardona wrote:
Hi,
I'm looking to buy a rfspace sdr-14 to use with a icom r7100 for seti
and RA. But today I see in the Ettus home page that it have the DBSRX
for sell, if it is usable for seti and RA it is a nice candy :)
because putting two dbsrx boards is possible to listen two channels at
the same time for example.
I have some questions, what is the minimal tune step, the minimum
signal detectable, and the noise floor of the board? Somebody has test
the module to receive some l-band signals like inmarsat-a, gps,
noaa's, etc.. ?
Thanks a lot!
Iban
I've used the DBS_RX board, and was able to see GPS L1 with a 15dBg,
0.7dBnf LNA in front of the DBS_RX. I don't have
hard numbers on performance. I think the minimum step size is 10khz.
The DBSRX board itself is probably quite noisy--
most such things are, which is why you *have* to use an LNA or two in
front if you're doing radio astronomy.
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