Hi Fengyang - Since we don't know what exactly you're transmitting (meaning: the Tx flowgraph or code), there could be all sorts of issues or settings affecting the system to make it work at some frequencies and not at others. If you could share the actual Tx & Rx flowgraph or code that would be best for getting assistance. - MLD
On Thu, May 30, 2019, at 1:51 PM, Jiang, Fengyang via USRP-users wrote: > Hi All, > > I'm using two usrps to transmit a preamble from one to the other. When I use > 2.437GHz, 2.45GHz and 2.5GHz, it works, but if I use 5GHz, 5.3GHz, 5.8GHz, I > will get nothing at the receiver side. What could be the problem? > > Devices being used: > USRP N210. https://www.ettus.com/all-products/UN210-KIT/ > CBX USRP Daughterboard (1.2GHz - 6GHz) https://www.ettus.com/all-products/CBX/ > VERT2450 Antenna (2.4 - 2.5GHz & 4.9 - 5.9GHz) > https://www.ettus.com/all-products/VERT2450/ > > Really thanks for your help! > > Best regards, > Fengyang
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