Simoco Xfin Blade, Service Manual

Page: 37 / 76

XFIN-BLADE-SM
TECHNICAL DESCRIPTION
PAGE 37
The -12.0V rail of the level translator is generated by U300B/C with D304 to D306
providing the required voltage multiplier effect. The high level negative signal is then split
into the four individual front-end negative DC values under software control by multiplexer
U902 and associated storage capacitors C904 to C907 before being applied to the anodes
of the front-end tuning varactors.
Figure 3.5 - VHF/UHF Receiver Block Diagram
9
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