Bottom transmitter
J N C 
1000 0
4
500 1500 0 0 0 1 0
500 1500 -1509 0 0 1 0
1000 1600 400 0.2 0.5 1.8 0
1020 1800 600 0.1 0.2 2.0 0
999
500 1000 61 1
1200 1E8
-1 1 250
0 5.0 20 1.0
500 1000 12 100
40 80 4