WBX Low Frequency Limit

GNU Radio
1

Hello,

I just got my WBX board and it works great in my USRP2. If it has 30
MHz BW then I can try foolish stuff like decoding all VHF ACARS
frequencies with parallel decoders.

When I do a USRP2 Probe the minimum Frequency is higher than advertised.

Freq Range (min, max):
68750000.0 Hz
2200000000.0 Hz

I loaded the latest Raw Ethernet, WBX versions of the fpga and firmware
on the web page.

I also assume the UDP stuff is experimental.

73 Eric

2

On 10/30/2010 04:47 PM, Eric C. wrote:

Hello,

I just got my WBX board and it works great in my USRP2. If it has 30 MHz BW
then I can try foolish stuff like decoding all VHF ACARS frequencies with parallel
decoders.

When I do a USRP2 Probe the minimum Frequency is higher than advertised.

Freq Range (min, max):
68750000.0 Hz
2200000000.0 Hz

Thats the limitations on the daughter-board LO. In combination with the
FPGA DSP, the overall chain you can tune you down to 68.75MHz - BW/2 +
host_rate/2, where BW is 40MHz:
http://www.ettus.com/uhd_docs/manual/html/dboards.html#wbx-series

You can tune lower depending upon how much of your baseband spectrum
that you are willing to tolerate outside of the passband of the WBX.

-Josh