NORCAL NC2030 Manual page 5

Figure 46. Connect R88 CW speed pot to the R88 pads as shown. Keep black and white in order shown.
........................................................................................................................................................... 47
Figure 47. Use Brown/Red/Orange wire and connect up the paddle jack in the color order shown........ 47
Figure 48. Attach paddle jack to JP5 using the color order shown.......................................................... 48
Figure 49. Use Brown/Red/Orange wire and connect up the headphone jack in the color order shown 48
Figure 50. Connect the headphone jack to JP4 in the color order shown................................................ 48
Figure 51. Use Yellow/Green/Blue wire to connect to R83, the 50k SCAF pot in the color order shown
........................................................................................................................................................... 49
Figure 52. Connect the 50K SCAF pot to the R83 header pads in the color order shown ....................... 49
Figure 53. Use Yellow/Green/Blue wire to connect to R77, the 5K volume control pot in the color order
shown ................................................................................................................................................ 49
Figure 54. Connect the 5K volume control pot to the R77 header pads in the color order shown.......... 50
Figure 55. All controls attached thus far.................................................................................................. 50
Figure 56. Location of VXO and T/R offset circuit.................................................................................. 52
Figure 57. Close up of VXO and T/R offset circuit.................................................................................. 52
Figure 58. Proper orientation of U8, D2, and D3 .................................................................................... 53
Figure 59. Yellow/Green/Blue wire to connect to R52, the 25k RIT pot in the color order shown......... 54
Figure 60. Connect the 25K RIT pot to the R52 header in the color order shown. Also attach a SPDT
switch to S1....................................................................................................................................... 54
Figure 61. General location of the AFA RF Buffer and Phase Splitter ................................................... 55
Figure 62. Close up view of the AFA RF Buffer and Phase Splitter Area ............................................... 55
Figure 63. Orientation of U9 labeling as installed.................................................................................... 56
Figure 64. Temporary connection from C72 to C54................................................................................. 57
Figure 65. Board Location of the LO mixer and PTO circuitry .............................................................. 59
Figure 66. Close up of the PTO and Mixer section of the board .............................................................. 59
Figure 67. PTO and PTO/VXO mixer sections as built........................................................................... 60
Figure 68. Temporary soda straw PTO coil L13 connected to the PTO oscillator circuit. ...................... 61
Figure 69. Anchoring the first turn of the temporary PTO coil. ............................................................... 62
Figure 70. Finished temporary PTO coil with 82T. Tie off holes placed on both ends ......................... 62
Figure 71. McDonald's straw diameter. .................................................................................................. 63
Figure 72. Main tuning PTO coil L13 shown mounted to the front panel. This is used only when the rig
is finished. ......................................................................................................................................... 63
Figure 73. Wrap first turn on the PTO coil. Position ¾" back from front, twist single turn in place..... 64
Figure 74. First turn is glued (epoxy) into place to make it easier to wrap the rest of the turns ............. 64
Figure 75. Coil with completed 105 turns. Turns wound tight and "shoulder to shoulder".................... 65
Figure 76. PTO coil coated in clear nail polish. The wife recommends "Sally Hansen Diamond
Strength" ........................................................................................................................................... 65
Figure 77. 2" brass screw cut back to a total length of 1 ¾ inches.......................................................... 66
Figure 78. Final screw with mounted spacer. ........................................................................................... 66
Figure 79. General location of LO Filter and Amp .................................................................................. 67
Figure 80. Close up of the LO Filter and Amp components..................................................................... 67
Figure 81. LO Filter and amplifier as built. Both trim caps must have proper orientation ..................... 68
Figure 82. Coils L6 and L7 are prepared to be mounted surface mount style on the top of the board on
the coil holes ..................................................................................................................................... 68
Figure 83. General location of the Detector and Front End Filter ............................................................ 70
Figure 84. Close up of the detector and the RF tuned front end............................................................... 70
Norcal NC2030 v5 12-18-05
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