tender for sk 30h double rail contact tx coil (tx1 & tx2) part no- 5823111209 & 5823111211 5nos and rxcoil (rx1 & rx2) part no- 5823111241 & 5823111207 5nos for eldyne make single section digital axle counter(ssdac) system as per rdso specification rdso/spn/177/2001 each coil of cable length 5.5 meters.make:thales. total 10nos (tx-5nos, rx-5nos) .