Fig. 2

Vemco VR2Tx receiver in a mounting cup. A: 3″ PVC pipe was cut to length as a protective receiver cup. Short tethers were tied through holes drilled in the top and bottom of the pipe and attached to longline snaps that were used to quickly attach and detach the cup from the array’s main 6 mm line at predetermined intervals. B: Two additional holes in the top of the pipe were used to tie the receiver into the cup (connected with a snap swivel for easy removal and replacement) and to affix a rubber band around the top of the receiver to ensure a snug and motionless fit without impeding signal reception. C: A 1.5″ long bolt was tightened through the bottom of the cup as a stopper