[USRP-users] X310 degraded SNR

2017-12-08 Thread Radio User via USRP-users
Note that the CBX lower frequency "limit" is around 1.2GHz while the UBX is quite happy tuning down to 10MHz. There are many powerful ambient signal sources between 10MHz and 1.2GHz. I suspect you are seeing those. Nonlinearity being what it is, I have seen AM broadcast signals appear in the

Re: [USRP-users] X310 degraded SNR

2017-12-08 Thread Marcus D. Leech via USRP-users
On 12/08/2017 09:18 AM, Mark Koenig via USRP-users wrote: I am mainly looking at frequencies above 2 GHz, would adjusting the dB_clock_rate be something that may help with the noise floor and help my SNR? For reasons beyond my control, I am currently using UHD rev 003.009.007. I hope this

Re: [USRP-users] X310 degraded SNR

2017-12-08 Thread Mark Koenig via USRP-users
I am mainly looking at frequencies above 2 GHz, would adjusting the dB_clock_rate be something that may help with the noise floor and help my SNR? For reasons beyond my control, I am currently using UHD rev 003.009.007. I hope this not an issue. Thank you Mark From: Mark Koenig

Re: [USRP-users] X310 degraded SNR

2017-12-06 Thread Marcus D. Leech via USRP-users
On 12/06/2017 10:24 AM, Mark Koenig via USRP-users wrote: I do see a slight change in SNR when moving to gain up and down, but nothing to give me a significant improvement. I am very interested in the LO comment. What does this mean? Also, is there any front end filtering that may be

[USRP-users] X310 degraded SNR

2017-12-06 Thread Mark Koenig via USRP-users
I do see a slight change in SNR when moving to gain up and down, but nothing to give me a significant improvement. I am very interested in the LO comment. What does this mean? Also, is there any front end filtering that may be different between the N210 and the X310? Or maybe the CBX 120 vs.