Seems to have synthesizer issue in this Cobra 2000. I am getting 8 volts at Test point 9. It should be around 2.7 volts and adjustable through L19. But L19 turning L19 doesn’t change the reading.
When i connect scope to test point 10 for L21 adjustment or to test point 1 for L20 adjustment, turning L19 here does affect those readings. But i can only get L21 to about 650 mv when it should be about 3.4 volts. And I can only get L20 up to about 36 mv when it should be about 190 mv.
All VCO...
Cobra 2000 Can’t adjust L19
When i connect scope to test point 10 for L21 adjustment or to test point 1 for L20 adjustment, turning L19 here does affect those readings. But i can only get L21 to about 650 mv when it should be about 3.4 volts. And I can only get L20 up to about 36 mv when it should be about 190 mv.
All VCO...
Cobra 2000 Can’t adjust L19