UHF Tuner Design for the 6BA4

Tuner design concepts for uhf grounded grid amplifiers using the new 6BA4 rocket tube are discussed. The four terminal admittances are used as the basis for these concepts. A brief review of noise and gain considerations of a uhf amplifler tube is included. A number of types of circuit parameters such as lumped constants, and coaxial lines are given consideration as applied to input and output uhf amplifiers. Both boosters and tuners are included in the circuit discussion, and noise figure, gain and bandwidth data on experimental models is compared to theory.