Instant Overview
| Telephone
Interference Instant Overview |
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How it happens: Telephone RFI (Radio Frequency Interference) takes place when equipment connected to a telephone circuit detects RF energy and acts like a radio receiver. Any transmitter from any radio service (broadcast, amateur, cb, business, government, etc.) can be the source of the RF energy. Ideally, the telephone equipment would include internal protection against RF. But, it is common that manufacturers include little or no designed-in protection. What it does: Interference can affect all types of telephone equipment including home and business telephones, modems, answering machines and fax machines. Loudness of Telephone RFI may range from a background irritant to overwhelming intensity that makes communications impossible. Interference may also corrupt fax/modem data transfer and/or disrupt proper operation of equipment controls and operating features. The solution: K-COM's proven interference-fighting products and techniques stop or significantly reduce the interfering radio signal before it reaches the telephone equipment. No intrusive measures are taken on the equipment. Most always, the radio signal reaches the equipment through the telephone system wiring (in some cases through the coiled cord for the handset). Think of the telephone wiring (not just the line cord, but all the wiring in the building) as a radio receiving antenna. When interference is strong, the wiring is probably a very "good" antenna. Use K-COM Filters to turn "good" antennas into poor antennas. Click here to determine which frequency range you need. Stopping an interference problem may be as simple as plugging-in a K-COM Filter at the affected telephone equipment. For the solution to severe interference, K-COM provides a special type of filter (Model RF-2 Hard Wired) for brute-force system-wide filtering of the telephone wiring. For more detailed information see K-COM Telephone Interference Technical Bulletin. Another excellent reference is Radio Frequency INTERFERENCE: How to Find It and Fix It published by the American Radio Relay League. |
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