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Ferrite Cores
I picked up some ferrite cores today and have been attaching them to
power cords, computer cables and my coaxial feedline. I can report a definite reduction in noise. This is especially gratifying because ferrite cores aren't too expensive. Any advice about how to position these cores? Are they best placed close to the electrical outlet or close to the computer, receiver or device being used (or both)? Would appreciate your insights. Thanks....Steve |
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#3
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Two or three weeks ago I saw a UK website about some new little ferrite
cores that are intended for use on cellphone earphones.They clip on the cellphone earphone cords/wires.Suppose to help drain off cellphone microwave energy.They might be handy for shortwave radios too. cuhulin |
#4
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wrote in message ... Two or three weeks ago I saw a UK website about some new little ferrite cores that are intended for use on cellphone earphones.They clip on the cellphone earphone cords/wires.Suppose to help drain off cellphone microwave energy.They might be handy for shortwave radios too. cuhulin The same cores that work at 800, 1.9GHz, 2.4 GHz will likely not be useful at HF. The whole idea that reducing RF on the earphone will be beneficial is nonsense. Right along the lines with the PC card antenna that fits under the cell phone battery. Dale W4OP |
#5
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"Dale Parfitt" wrote in
news:dXTMd.4364$uc.1179@trnddc04: wrote in message ... Two or three weeks ago I saw a UK website about some new little ferrite cores that are intended for use on cellphone earphones.They clip on the cellphone earphone cords/wires.Suppose to help drain off cellphone microwave energy.They might be handy for shortwave radios too. cuhulin The same cores that work at 800, 1.9GHz, 2.4 GHz will likely not be useful at HF. The whole idea that reducing RF on the earphone will be beneficial is nonsense. Right along the lines with the PC card antenna that fits under the cell phone battery. Dale W4OP I don't think the ferrite cores for cell phone headsets are for improving reception--they're for reducing your chances of getting brain cancer. If they make a difference in this regard, who knows... |
#6
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"Conan Ford" wrote in message 3.159... "Dale Parfitt" wrote in news:dXTMd.4364$uc.1179@trnddc04: wrote in message ... Two or three weeks ago I saw a UK website about some new little ferrite cores that are intended for use on cellphone earphones.They clip on the cellphone earphone cords/wires.Suppose to help drain off cellphone microwave energy.They might be handy for shortwave radios too. cuhulin The same cores that work at 800, 1.9GHz, 2.4 GHz will likely not be useful at HF. The whole idea that reducing RF on the earphone will be beneficial is nonsense. Right along the lines with the PC card antenna that fits under the cell phone battery. Dale W4OP I don't think the ferrite cores for cell phone headsets are for improving reception--they're for reducing your chances of getting brain cancer. If they make a difference in this regard, who knows... You missed my point- they are no more useful at preventing brain cancer than is the "antenna enhancer" card for extending cell phone range. Dale W4OP |
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