USRP X310/ UBX 160 Attenuation in 10Mhz to 1.5Ghz

[Michael_Smith]

Hi, I'm having a 45db attenuation. 

[altenbach]

Do you have a question?

[Michael_Smith]

Yes, the question is what can be the reason. I've learnt so far that it's a problem with UBX but in depth I don't know what is the actual cause because it's more than 1 UBX daughterboards that are now having the same issue. The problem isn't with the USRP as I've used brand new UBX and it worked fine. I want to troubleshoot faulty ones at a hardware level, can you help me with it please?

[altenbach]

So you have a hardware problem that has nothing to do with LabVIEW. Why are you posting in the LabVIEW (software) forum?

For USRP problems you could maybe post here. I can move the thread for you.

[Michael_Smith]

I'm new to community forum and I don't know what to do and from where to do? Is it moved already or I've to do something?

[altenbach]

Where do you want it moved? There is also this forum.

(And please use a few more sentences that make it clear what the problem is. A long litany of acronyms and just value-free statements (e.g. "I'm having a 45db attenuation", or "same issue"), without telling us if that's good or bad, does not help.). If you "learned something so far", give a link where you "learned" it. Explain the test setup and how things are connected in detail. Your problem description is currently way too terse!)

[Michael_Smith]

Yes, move it there please.

My learning is practical experience. There is one Antenna of L-Band, then Bandpass Filter, 30dB LNA, Limiter and then DC Block which is finally connected to USRP. I'm now transmitting signal of -50dBm but I'm receiving it at -80dBm even though it's over the wire, I've changed the transmitter but problem persists anyhow it works fine in 1.5 to 6GHz band