Here is my H4 hooked up with CH0 connected to TP103 and TP102 and CH1 connected to TP104 and TP105 per the manual. SMA-M/BNC-F adapters and BNC-M to alligator clips. One can do rather better with a custom cable set at the radio end.
I didn't make any effort to set the nanoVNA properly with a thru cal, etc. It should be done for alignment, but not needed for just a demo.
Have Fun!
Reg
