A Carrier is a fixed frequency. More frequencies can be created if this frequency is turned on and off very rapidly. Another word for this rapid switching is "Modulation". Usually this Modulating frequency is quite high, so the switching cannot be observed.

When a Carrier frequency is Modulated multiple frequencies are created either side of the Carrier frequency. These frequencies are called "Sidebands". The Modulation sets the distance between the sidebands.

Imagine an inverted hair comb. The teeth of the comb represent the frequencies being created by a modulated Carrier. Each tooth is evenly spaced, just as modulating a Carrier frequency makes evenly spaced frequencies, all the Modulation frequency apart.

Now imagine dipping the tip of each tooth into some black ink and placing the tips onto a white piece of paper. The paper will have a series of black dots. Each dot represents where a frequency will be present. Slide the comb lengthwise by one tooth pitch. The paper will now have a solid black line. Every "frequency" has been "written" by the comb by moving it only fractions of an inch.

This analogy very closely explains how a Carrier Sweep works. Only a very small movement in the carrier is required to hit all frequencies.

Until now Rife machines have had a fixed Carrier frequency. They could not sweep a wide range of frequencies by altering the carrier, since the efficiency of the circuit would drop dramatically, rendering the machine useless. The only sweep option available was a Modulation sweep. In the comb analogy, the teeth would gradually move further and further apart. The comb would also grow larger to accommodate the extra spacing. The dots would cross each other as the spacing increases. This means that each frequency is hit several times during a sweep.

Whilst this sounds grand, there is an embarrassing disadvantage. Each frequency is produced for 8 seconds or less. Royal Rife applied his frequencies for 3 minutes. This may explain why the sweeps used have not produced "spontaneous remissions" as they should.

The Carrier Sweep applies each frequency just once, but it applies it for at least 3 minutes. Each frequency is thoroughly pounded.

The Carrier Sweeps in Spooky can be user-defined. The Carrier Frequency will receive most of the power, so choose a frequency that is in the centre of the frequency range you wish to target. The Modulation Frequency sets how far apart the other frequencies are. A high modulation frequency will cover a broader range, but the time taken for the sweep will increase since there are more frequencies to target between each "comb tooth". The Frequency Tolerance sets the maximum distance a frequency can deviate but still be effective. Royal Rife specified 1/4 of 1%, or 0.25%. Spooky set the default tolerance to .025%. The Frequency Application Time sets how long each frequency will be applied within the Tolerance band. You can set the parameters to best suit your needs. A graph representing the output frequency ranges shows the results of your settings.

When creating a custom Carrier Sweep keep an eye on the Sweep Duration. This is the time required to complete the sweep. Often this time can extend to many hours if the settings are altered without care.

Spooky can also do Modulation Sweeps if required.