just want to ask this.what is the signal range vertically?i mean can TD-W8961ND provide signal to ground floor from 2nd floor(3 storey building) stock or with TL-ANT2408CL.
On stock aerials, ground floor to 1st floor easily (-20 to -30 dBm, all bars); 2nd floor not so great! 2-3 bars, -40 to -60 dBm. No drops, pretty stable connection, unless of course you have interference from other devices in the same band.
Edit: Oh wait, you were asking for the other way round! Sorry, didn't read carefully the first time.