CRS HUNT DISCRIMINATOR A3600, CRS PHASE DISCRIMINATOR A3700, AND REFERENCE OSCILLATOR A2000.

TM 11-5820-670-30

1-17. CRS FIRST AND SECOND IF. AMPLIFIER A3400/CRS THIRD IF. AMPLIFIER AND LIMITER

A3500. (CONT)

The third if. amplifier increases the signal strength sufficiently to drive the limiter. The limiter clips the

upper and lower peaks of the if. to maintain a constant amplitude required by the travis-type discrim-

inator in hunt discriminator A3600. Filter FL3005 provides additional attenuation of all signals other

than the if. input.

1-18. CRS HUNT DISCRIMINATOR A3600, CRS PHASE DISCRIMINATOR A3700, AND REFERENCE

OSCILLATOR A2000.

EL1AT094

HUNT DISCRIMINATOR A3600

If. signals with a frequency of approximately 5.6 or 5.65 MHz are applied to buffer amplifier A3600,

which prevents loading down the limiter. The buffer amplifier's output is then fed to the travis-type hunt

discriminator.

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