Why does the LED flash constantly?
There are a couple of reasons why the LED can flash constantly. One reason is due to low batteries. Try changing the batteries to see if the problem goes away. Another reason is that the sensitivity is set too high. On early versions of the CB-1 circuit board, if the sensitivity was set much above 1/2 way, the circuit could start oscillating. On these older models, keep the sensitivity to a maximum of around 40% and the problem should go away. The 40% setting will still give you 60+ feet range. On CB-1 Rev. 5 and newer, the problem has been solved and you should be able to use the full range of the adjustment potentiometer.
