HF modulator for VTR - has rectangular screening frame divided internally for housing modulator circuit and booster circuit

摘要

The HF modulator has a rectangular screening frame with a top and bottom panel (1, 3) and two side panels (2, 4). The screening frame contains a L-shaped screening plate (5) dividing it internally, with a HF modulator circuit (A) in the rectangular compartment (38) and a booster circuit (8) in the L-shaped components (37). One side panel has spaced antenna input and output terminals (7, 8), with a setting control for the modulator circuit oscillator frequency pref. positioned between them, so that its axis is parallel to the antenna input and output terminals. ADVANTAGE - Easy access to setting control for adjusting UHF oscillation frequency.