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The second version is in serial numbers 2830 through 3459. | The second version is in serial numbers 2830 through 3459. | ||
The third version is in serial numbers 3460 and up. | The third version is in serial numbers 3460 and up. | ||
All three versions use a 50mA tunnel diode | All three versions use a 50mA 6pF tunnel diode | ||
to generate the actual output pulse. | to generate the actual output pulse. | ||
The circuit versions differ in how they | The circuit versions differ in how they |