NFC RF Analysis

Hi!

I'm trying to analyze the RF communication between 2 TRF7970aEVM's, my guess was probing the Rx1/Rx2 headers and the Tx pin.

I tried using a scope for this (tektronix TDS2002b) but the signal was too elusive, maybe I just didn't set it properly. 

Can you recommend how to do this? (HW or SW)

I also considered using Labview with an NI USB DAC, or maybe a spectrum analyzer, but couldn't figure out how to do it.

I want to get something like this capture:

thanks.