diff --git a/short_antenna.html b/short_antenna.html index 9065123..4d6a5e2 100644 --- a/short_antenna.html +++ b/short_antenna.html @@ -361,27 +361,29 @@ fctx.lineTo(wire_x - 15, up_wire_bot_y); fctx.stroke(); + const d_pos = up_wire_bot_y - dipole.spacing_ratio * (up_wire_bot_y - up_wire_top_y); + fctx.textAlign = "right"; - drawInductor(fctx, wire_x, up_wire_bot_y - dipole.spacing_ratio * (up_wire_bot_y - up_wire_top_y), 0.0*Math.PI); - drawArrow(fctx, wire_x - 30, up_wire_bot_y - dipole.spacing_ratio * (up_wire_bot_y - up_wire_top_y), 0.5*Math.PI); - fctx.fillText(dipole.distance_meters.toFixed(2).toString() + " m", wire_x - 60, up_wire_bot_y - dipole.spacing_ratio * (up_wire_bot_y - up_wire_top_y) + 16 ); - fctx.fillText(dipole.distance_feet.toFixed(2).toString() + " ft", wire_x - 60, up_wire_bot_y - dipole.spacing_ratio * (up_wire_bot_y - up_wire_top_y) ); + drawInductor(fctx, wire_x, d_pos, 0.0*Math.PI); + drawArrow(fctx, wire_x - 30, d_pos, 0.5*Math.PI); + fctx.fillText(dipole.distance_meters.toFixed(2).toString() + " m", wire_x - 60, d_pos + 12 ); + fctx.fillText(dipole.distance_feet.toFixed(2).toString() + " ft", wire_x - 60, d_pos - 4); drawArrow(fctx, wire_x - 30, up_wire_bot_y, 0.5*Math.PI); fctx.fillText("0.00", wire_x - 60, up_wire_bot_y + 5); //fctx.fillText("0.00 m", wire_x - 60, up_wire_bot_y + 18); drawArrow(fctx, wire_x - 30, up_wire_top_y, 0.5*Math.PI); - fctx.fillText((dipole.length_feet * 0.5).toFixed(2).toString() + " ft", wire_x - 60, up_wire_top_y ); - fctx.fillText((dipole.length_meters * 0.5).toFixed(2).toString() + " m", wire_x - 60, up_wire_top_y + 16); + fctx.fillText((dipole.length_feet * 0.5).toFixed(2).toString() + " ft", wire_x - 60, up_wire_top_y - 4); + fctx.fillText((dipole.length_meters * 0.5).toFixed(2).toString() + " m", wire_x - 60, up_wire_top_y + 12); fctx.textAlign = "left"; - fctx.fillText(dipole.length_feet.toFixed(2).toString() + " ft", wire_x + 60, up_wire_top_y ); - fctx.fillText(dipole.length_meters.toFixed(2).toString() + " m", wire_x + 60, up_wire_top_y + 16); + fctx.fillText(dipole.length_feet.toFixed(2).toString() + " ft", wire_x + 60, up_wire_top_y - 4); + fctx.fillText(dipole.length_meters.toFixed(2).toString() + " m", wire_x + 60, up_wire_top_y + 12); //fctx.fillText("0.00 ft", wire_x + 60, down_wire_bot_y ); fctx.fillText("0.00", wire_x + 60, down_wire_bot_y + 5); //drawArrow(fctx, wire_x + 10, up_wire_bot_y, -0.5*Math.PI); const L = Xl / (2 * Math.PI * dipole.frequency_hz * 0.000001); - fctx.fillText("L = " + L.toFixed(1).toString() + " \u00B5H", wire_x + 20, up_wire_bot_y - dipole.spacing_ratio * (up_wire_bot_y - up_wire_top_y)); - fctx.fillText("X = " + Xl.toFixed(1).toString() + " \u03A9", wire_x + 20, up_wire_bot_y - dipole.spacing_ratio * (up_wire_bot_y - up_wire_top_y) + 16); + fctx.fillText("L = " + L.toFixed(1).toString() + " \u00B5H", wire_x + 20, d_pos - 4); + fctx.fillText("X = " + Xl.toFixed(1).toString() + " \u03A9", wire_x + 20, d_pos + 12); fctx.font = frequency_font; fctx.fillText("f = " + (dipole.frequency_hz * 1e-6).toFixed(2).toString() + " MHz", 20, down_wire_bot_y - 36); fctx.font = loop_dia_font;