Precision Frequency
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Precision Frequency
What is Frequency Hopping Spread Spectrum?
Frequency Hopping Spread Spectrum abbreviated as FHSS is a wide known radio transmission technology. In this procedure, both the transmitter and receiver leap between a predesigned set of frequencies. This is indeed a type of modulation technique and the process of switching between frequencies possibly reduces interference and also averts unauthorized intervention in telecommunication. It is commonly applied these days in local area wireless network where the signal is originally narrow in a tapered band. The signal is then modulated across a wide range of frequencies and it perhaps hops between them, during transmission in a conventional sequence.
The discovery of this technique is quiet exciting and the credit goes to the film star Hedy Lamarr. During the Second World War, this was considered as the safest method to communicate information in the war field. The method initially used a piano to control frequency hops and the actress never patented the invention which lastly expired. It was later brought in again by Sylvania who named it as the spread spectrum. Devices that use FHSS technique is comparatively cheaper and are less efficient when compared with other modulation practices. The main benefit over direct sequence modulation is that there are numerous access points in the same area that keeps transmission more under control.
The jump amid frequencies can be either random or it can follow a specific algorithmic rule. The transmitter and the receiver work in sync and eventually the data is transferred in a tapered band. Once the process of data transmission is over the transmitter automatically tunes to another frequency and proceeds with the methodology. The crucial point here is receiver must function effectively and in tune with the transmitter by getting the signal at the precise time. It should also hop frequency and receive signal appropriately in accordance with the transmitter. This technology, as a result uses good deal of bandwidth than when information is transmitted over a single frequency. There are certain laws in relation to FHSS and it requires companies to use at least 75 frequencies during every transmission, with an utmost reside time of 400 ms.
These rules are intended to make sure that no sole device uses the same frequency for a long time and ultimately it does not utilize too much bandwidth. In this system the bandwidth is basically determined through the number of distinct frequencies employed. Consequently, the signal quality is also high when more number of hopping frequencies is available. One other important constraint is the dwell time which is vital.
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Can you affect cations and anions with an externally applied electric field?
Is it possible to affect the charge of ions, using an externally applied electric field (such as from a BK Precision signal generator)
Example: running a positive DC field through a glass of water to change bonds of Hydrogen and Oxygen.
If such things are possible, does the frequency of the signal matter?
Well, Peter V, even though anions and cations are "electrically" charged, the charge is carried right down in the inner makings of the atom itself, an ion is an atom that has gained or lost an electron. You will not be able to change an ion's charge but you WILL be able to cause these ions to move about, just as using a magnet can cause iron filings to move around on a piece of paper.
Your proposal of applying a DC current through water to produce Oxygen and Hydrogen is nothing new, it's hundreds of years old. It is the simple process of electrolysis of water, an Oxidation-Reduction reaction. However, be aware that you are NOT changing any ELECTRICAL bonds, you are using electrical energy to cause a non-spontaneous CHEMICAL reaction to occur. The cathode will yield Hydrogen(g), while Oxygen(g) will collect around the anode.
As this reaction requires DC to be used there is no frequency to worry about.
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