Flexible auxiliary deflection coil

A color cathode ray tube display with scanning beam velocity modulation, comprising:

• a color cathode ray tube and guns generating a plurality of electron beams along a z axis;
• a deflection yoke mounted on a neck of said cathode ray tube and generating a main deflection field, said plurality of electron beams being deflected by said field with a certain level of differential deflection;
• a flexible support having first and second sides;
• first and second conductor coil patterns respectively disposed adjacent opposite sides of said flexible support, each of said patterns forming two generally rectangular loops about respective conductor free window areas;
• side conductors of said generally rectangular loops of said first and second conductor coil patterns oriented generally parallel to said z axis in a constrained grouping within a narrow chordal angle, said side conductors subtending a predetermined angle symmetrically positioned about said Y axis on said neck when said flexible support is conformed to said neck;
• a conductive connection through said flexible support for coupling scanning velocity modulating current between said conductor coil patterns in a series arrangement;
• and,
• said constrained grouping of said side conductors and said series arrangement of said first and second conductive coil patterns generating an auxiliary deflecting field producing substantially more deflection sensitivity than either one of said conductive coil patterns individually without substantially increasing said certain level of said differential deflection.