The RF LO does not support the requested frequency

hi. i am using ubuntu 14.04 and i am trying run wifi_rx.grc.when i try
run this wifi_rx.grc it comes out with this:

Generating:
“/home/userr/Downloads/gr-ieee802-11-master/examples/wifi_rx.py”

Executing:
“/home/userr/Downloads/gr-ieee802-11-master/examples/wifi_rx.py”

linux; GNU C++ version 4.8.2; Boost_105500;
UHD_003.008.002-135-ga393ec83

Using Volk machine: avx_64_mmx
– Opening a USRP2/N-Series device…
– Current recv frame size: 1472 bytes
– Current send frame size: 1472 bytes

UHD Warning:
The hardware does not support the requested RX sample rate:
Target sample rate: 5000.000000 MSps
Actual sample rate: 50.000000 MSps
– Tune Request: 2412.000000 MHz
– The RF LO does not support the requested frequency:
– Requested LO Frequency: 2412.000000 MHz
– RF LO Result: 2411.999389 MHz
– Attempted to use the DSP to reach the requested frequency:
– Desired DSP Frequency: -0.000611 MHz
– DSP Result: -0.000611 MHz
– Successfully tuned to 2412.000000 MHz

UHD Warning:
The total sum of rates (50.000000 MSps on 1 channels) exceeds the
maximum capacity of the connection.
This can cause overflows (O).
O

Done

what should i do. i hope you can help me.

On Thu, Jul 30, 2015 at 4:26 AM, Daniele N. [email protected]
wrote:

The TI LM97600 supports sampling at 5 GSPS.

http://www.ti.com/product/lm97600

and it’s available at Digikey for only $325 in singles. 292 pin BGA
package, so not something you’ll deadbug onto a board.

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