A wideband transistor if amplifier for space and terrestrial repeaters using grounded-base transformer-coupled stages

A wideband transistor IF amplifier is described. A measured model has a gain of 41 db and is flat to ±0.1 db from 50 to 100 mc. Data on noise figure, effect of temperature changes and power output are presented. An electronically variable attenuator is described which is suitable for use in such an amplifier as part of the AGC circuit.