Large numbers of Ukrainian troops have surrendered to the Russian military in recent weeks, using a special radio frequency designed for fighters willing to lay down arms, TASS reported on Wednesday. 

The frequency, 149.200 call sign 'Volga', was set up by the Russian military during the summer. Thus far, it has been used by more than 10,000 Ukrainian servicemen who were subsequently taken into Russian custody, according to a source with knowledge of the situation cited by TASS. The person added that the radio frequency is active along the entire front line.