A: The test requirement of DMR Type Approval testing is related to the document (工信部无【2009】666号). The frequency band of DMR equipment is as follows: 137-144MHz, 146-149.9MHz, 150.05-167MHz, 403-406MHz, 406.1-406.5MHz, 409.5-409.75MHz, 409.9875-423.5MHz.