 Multiway
Radio Mics - 3 - Radio Mic Problems - 1 |
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The Problems Of course, radio microphone systems are subject to the usual problems that affect audio systems - bad wiring , poor set-up (bad gain adjustment, poor mic positioning), faulty components - but there are some problems that are specific to radio systems and must be accounted for. These are :- |
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Interference is a term given to an RF (Radio Frequency) transmission that is not wanted. It can be generated by other radio mics, computers, lights, dimmers, domestic appliances, TV stations, audio equipment etc - in fact, anything that uses electricity is a potential source of interference. Interference can be divided into two types - interference that is on the same frequency as your channel, and interference that is not. This is an important distinction, as the methods for dealing with the two types are different. If the interference is on your channel, the only possible solutions are to either remove the source of the interference, or switch channel. The commonest source of this type of interference is probably the radio mic being used in a nearby room which happens to be on your frequency. If the interfering signal is near to your operating frequency, then whether you have a problem or not will depend on the design of your receiver. In general, the more expensive receivers will have better selectivity, and will be tuned to filter out signals closer by. Although this is not the only criteria that governs the expense of a system, by and large if you are trying to operate in an area where there is a profusion of potential RF interference (densely populated cities and towns for example), then you probably need to budget for a more expensive system to avoid problems, whether you are hiring or buying. |
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