Ordinance No. 1.924/SEI-MCOM of 29 January 2021 - Establishes guidelines for bidding procedures for the radio frequency bands of 700 MHz, 2.3 GHz, 3.5 GHz and 26 GHz and defines criteria for the protection of users who receive free and open TV signals through satellite dishes in Band C satellite, adjacent to the 3.5 GHz band (2021) (Portuguese)