AW: loop cable question

hi thomas, just use two unshielded twisted pairs of telephone patch wire for short distances. if you have longer distances (10 .. 100m), you should use network cables. regards, andreas

i need a cable to connect 2 bs-11 in daisy chain mode. the web page said 120 ohm symmetric, no type or link where to buy it. must that be exactly this spec (120 ohm), or can i take any shielded cable with 2 wires?