A pleasant surprise! I went out to the pool this morning, and with the waterproofed camera lens underwater, and the tip of the antenna just above the water, I could see the other end of the pool, 40 ft. away, on the TV monitor! That was under clear pool water.
When the antenna was placed under the water 1 or 2 inches, I could only get transmission 4 or 5 ft away from the receiver and TV.
Better results than I expected.
RCABS- It's easy to control your own bladder!