1. The finesse of the cavity and the modulation frequency . 2. In the case of nonlinear systems, higher harmonics of the modulation frequency appear. 3. Within the STIPA signal, each octave band is modulated simultaneously with two modulation frequencies . 4. This effectively makes the system AM at low modulation frequencies and SSB at high modulation frequencies. 5. This effectively makes the system AM at low modulation frequencies and SSB at high modulation frequencies . 6. Harmonic spectrum in the output depends on the width of the pulses and the modulation frequency . 7. Another important factor is the modulation frequencies which should be close to the actual missile frequencies. 8. If the modulation frequency is too high the two " dips " in the curve increase. 9. A lock-in amplifier is then used to measure deflections found at the modulation frequency . 10. Fender replaced them with neon lamps, which increased the modulation frequency and reduced the controlling currents.
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