My operator has two BTSs on the nearest hill, First of them uses B3, the second one B20. B3 is quite good 30Mb/10Mb , but B20 is much worse, only about 3Mb/1Mb with SINR 2 dB. So I set TRB140 to use only one band - B3. But Vodafone switches its BTSs off sequentially but iregularly every night for few hours so if TRB140 is on B3 only, there is no internet for about 3 hours every night. Is there a way to set a priority for the bands? B3 as a number one, when the connection is lost, switch to B20, when B3 is available again, switch back? Or any other solution for that problem?