Instructions for modifying a 450 Mhz
GE MVP, MASTR EXEC II or MASTR II Exciter to 420 Mhz
Author Unknown

Modification

Replace the following components on the exciter PCBA.

  • C118 from 27pf to 30pf.
  • C121 from 27pf to 30pf.
  • C122 from 20pf to 24pf.
  • C192 from 18pf to 24pf. Located under the shield can of T105
  • C193 from 27pf to 39pf. Located under the shield can of T106
  • C138 from 39pf to 56pf.
  • C143 from 39pf to 47pf.
  • C194 from 8pf to 12pf. Located under the shield can of T107
  • C195 from 6pf to 9pf. Located under the shield can of T108
  • C145 from 15pf to 22pf.
  • C147 from 15pf to 30pf.
  • Remove L114 and install R136 a 10 ohm resistor

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