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Stuart Green's Article
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5 Solutions To RF In The SHACK!
Common-mode RF, which is unwanted RF energy that flows on the outside of the coaxial cable or other conductive paths, can cause a variety of problems in your shack, including interference, noise, and reduced signal strength. Fortunately, there are several ways to stop common-mode RF in your shack. Here are five effective methods:
#1 Use a common-mode choke: A common-mode choke is a device that blocks RF energy from flowing on the outside of the coaxial cable or other conductive paths. It is essentially a coil of wire that is wrapped around a ferrite core. By inserting a common-mode choke in the coaxial cable or other conductive path, you can reduce or eliminate common-mode RF.
#2 Install a balun: A balun is a device that matches the impedance of an unbalanced coaxial cable to the balanced impedance of your radio and antenna system. It also serves to block common-mode RF. Installing a balun can help to reduce or eliminate common-mode RF in your shack.
#3 Ground your equipment: Grounding your equipment is a simple and effective way to reduce common-mode RF. By connecting all of your equipment to a common ground, you can prevent RF from flowing on the outside of the coaxial cable or other conductive paths.
#4 Use shielded cables: Using shielded cables for your equipment can help to reduce common-mode RF. Shielded cables have an outer layer of conductive material that blocks RF from entering or exiting the cable. By using shielded cables, you can prevent common-mode RF from entering or exiting your equipment.
#5 Keep cables away from power sources: Cables that are located near power sources can pick up common-mode RF. To reduce this interference, keep your cables away from power sources and other sources of interference, such as fluorescent lights and other electronic devices.
#1 Use a common-mode choke: A common-mode choke is a device that blocks RF energy from flowing on the outside of the coaxial cable or other conductive paths. It is essentially a coil of wire that is wrapped around a ferrite core. By inserting a common-mode choke in the coaxial cable or other conductive path, you can reduce or eliminate common-mode RF.
#2 Install a balun: A balun is a device that matches the impedance of an unbalanced coaxial cable to the balanced impedance of your radio and antenna system. It also serves to block common-mode RF. Installing a balun can help to reduce or eliminate common-mode RF in your shack.
#3 Ground your equipment: Grounding your equipment is a simple and effective way to reduce common-mode RF. By connecting all of your equipment to a common ground, you can prevent RF from flowing on the outside of the coaxial cable or other conductive paths.
#4 Use shielded cables: Using shielded cables for your equipment can help to reduce common-mode RF. Shielded cables have an outer layer of conductive material that blocks RF from entering or exiting the cable. By using shielded cables, you can prevent common-mode RF from entering or exiting your equipment.
#5 Keep cables away from power sources: Cables that are located near power sources can pick up common-mode RF. To reduce this interference, keep your cables away from power sources and other sources of interference, such as fluorescent lights and other electronic devices.
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2024-05-25