‘Transmit/receive modules’, ‘transmit/receive MMICs’, ‘transmit modules’ and ‘transmit MMICs’, rated for operation at frequencies above 2,7 GHz and having all of the following: (a) A peak saturated power output (in watts), Psat, greater than 505,62 divided by the maximum operating frequency (in GHz) squared [P sat > 505,62 W * GHz 2 /f GHz 2 ] for any channel; (b) A ‘fractional bandwidth’ of 5 % or greater for any channel; (c) Any planar side with length d (in cm) equal to or less than 15 divided by the lowest operating frequency in GHz [d ≤ 15 cm * GHz * N/f GHz ] where N is the number of transmit or transmit/receive channels; and (d) An electronically variable phase shifter per channel; Technical notes: 1. A ‘transmit/receive module’ is a multifunction ‘electronic assembly’ that provides bidirectional amplitude and phase control for transmission and reception of signals. 2. A ‘transmit module’ is an ‘electronic assembly’ that provides amplitude and phase control for transmission of signals. 3. A ‘transmit/receive MMIC’ is a multifunction ‘MMIC’ that provides bidirectional amplitude and phase control for transmission and reception of signals. 4. A ‘transmit MMIC’ is a ‘MMIC’ that provides amplitude and phase control for transmission of signals. 5. 2,7 GHz should be used as the lowest operating frequency (fGHz) in the formula in item (c) for transmit/receive or transmit modules that have a rated operation range extending downward to 2,7 GHz and below [d ≤15 cm * GHz * N/2,7 GHz]. 6. Item IX.A3.019 applies to ‘transmit/receive modules’ or ‘transmit modules’ with or without a heat sink. The value of d in item 11.c. does not include any portion of the ‘transmit/receive module’ or ‘transmit module’ that functions as a heat sink. 7. ‘Transmit/receive modules’, ‘transmit modules’, ‘transmit/receive MMICs’ or ‘transmit MMICs’ may or may not have N integrated radiating antenna elements where N is the number of transmit or transmit/receive channels.