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Take the radio out of water and remove the battery as quick as possible. Swing the water out of radio and put the radio at a dry and ventilated place. Please take apart radio, and use the dryer (the temperature not too hot) to dry it or lay in the sun(at least one day),clean out foreign matter all link port, then installation and test.

Make sure whether the frequency you use and QT signal are the same as other group members .Other group members may be far away. Make sure whether you are in the effective range of other transceivers

Battery service life is over. Please replace new battery.

Thanks for your kind attention for our products, but according to our company rules, we can not provide FREE samples for our customers, not only the sample cost is much, but also we have many customers in China and the world, we can not afford FREE samples.