Ferrite Rods
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I read that the reception of a ferrite rod am antenna inside a radio depends on the surface area.?
Surface area of what? Is it the area of the hollow circle created by the loop? The total surface area of the wound wire? Would a big loop, say, hula hoop size, with one winding, work just as good as a 4" rod inside the radio if the surface area of the windings were equal?
Rich:
Do you know if it's the SA of the exposed wire in the coil, or the total wire, or just the area exposed to the radio wave, since am is very directional?
It is the surface area of the coil. Old radios used to have big flat rectangular antennas that had their wire wound around like a spider web. The rod type antennas are more efficient because of their ferrite center to be compact enough to serve a small radio.
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Tripp Lite ISOBAR4ULTRA Isobar Ultra 4-Outlet Surge Protector (3330 Joules, 6ft Cord) $32.99 High-quality ponents near indestructible all-metal case and unique noise filtration systemRobust surge suppression circuits with sine-wave tracking offer extreme levels of protection against the heaviest surge conditions exceeding IEEE 587 category A & B specifications Reducing 6000V test surges to harmless levels under 35 voltsCombines large torroidal chokes ferrite rod-core inductors and HF/VHF ... |
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Tripp Lite ISOBAR2-6 2 Outlet Isobar Surge Protector 6ft Cord 1410 Joules $27.13 For more than 20 years America's leading panies have trusted Tripp Lite's Isobar Premium surge and noise suppressors to protect sensitive puter working and tele equipment. With more than 14 million satisfied customers the Isobar remains the world's #1 selling premium surge suppressor. Loaded with a generous bination of high quality ponents near indestructible all-metal case and enhanced noise filt... |
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Tripp Lite ISOTEL6ULTRA 6 Outlet Isobar Surge Protector (3330 Joules, Tel/DSL) $39.99 For more than 20 years, America''s leading companies have trusted Tripp Lite''s Isobar Premium surge and noise suppressors to protect sensitive computer, networking and telecom equipment. With more than 14 million satisfied customers, the Isobar remains the world''s #1 selling premium surge suppressor. Loaded with a generous combination of high quality components, near indestructible all-metal cas... |
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Tripp Lite ISOTEL8ULTRA Isobar Surge 8 Outlet RJ11 12 feet Cord LED's 3840 Joules $72.71 Description:Tripp Lite's Isotel 8 Ultra Surge Suppressor has 8 outlets, a 12-ft. cord with a space-saving right-angle plug, diagnostic LEDs and 2, 850 joules of energy absorption. Built-in RJ11 jacks prevent surges from damaging your modem/fax/phone equipment. A 6-ft. telephone cord is also included. Exclusive isolated filter banks eliminate interference between connected equipment. Isotels are vi... |
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TRIPP LITE Isobar 6 Surge Suppressor External 6 Output Connector(S) Components $71.31 Notice: $50 charge per refused shipment unless the refusal is based on our error. Customers should thoroughly inspect all cartons for damage before signing for the shipment.Damage: Must be reported within 15 days from delivery date. Shortage/Fallout: Must be reported within 15 days from delivery date. Loss: Must be reported within 30 days from ship-date. If you have any other questions about the p... |
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Tripp Lite Isobar 6 Outlets 120V Surge Suppressor. ISOBAR 6 6OUT ULTRA COMPACT HOSPITAL GRADE 5-15P HG METAL SURGE. Receptacles: 6 x NEMA 5-15R - 3330J $103.28 Standard Warranty: Lifetime Manufacturer/Supplier: Tripp Lite Manufacturer Part Number: ISOBAR6ULTRAHG Brand Name: Tripp Lite Product Name: Isobar 6 Outlets 120V Surge Suppressor Marketing Information: The ISOBAR6ULTRAHG combines high quality components, in a near indestructible all-metal case. Isobar's unique protection system combines large torroidal chokes, ferrite rod-core inductors, HF/VHF ca... |
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Kaito AN-200 Tunable Passive AM Antenna $24.95 The Kaito AN200 tunable indoor AM loop antenna can dramatically improve the reception on AM (Medium Wave) stations throughout the entire AM broadcasting band. This AM Antenna enhances reception as well as adds clarity to the ferrite AM antennas that are included with all home stereo receivers and portable radios. The AN200's loop design offers you the reception that normally would only be achieved... |
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Kaito Amplified Active Loop AM & Shortwave Antenna, KA33 $39.87 One Year Manufacturer's warranty. Do you want to increase the reception of your radio's whip antenna? Looking for a portable indoor AM or SW Antenna with an Easy Connection? ENHANCES PERFORMANCE AND RECEPTION - AM & SW Your Kaito KA-33 AM / Shortwave Antenna has tested among the best indoor world-band antennas. This active loop antenna will significantly improve your AM or SW performance and ... |
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C. Crane Twin Coil Ferrite AM Antenna $70.00 If you have a favorite AM radio station, but experience poor reception, the Twin Coil Ferrite � AM Antenna may be just what you're looking for. This patented AM antenna doubles daytime reception, dramatically reduces nighttime fade out, and can even eliminate heavy static and distortion-it's a radio accelerator! Connect to your radio to hear distant low-power stations with amazing clarity. Works... |
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New - Tripp Lite Isobar 2 Outlets Surge Suppressor - 375508 $47.60 General Information Manufacturer/Supplier: Tripp Lite Manufacturer Part Number: ISOBAR2-6 Brand Name: Tripp Lite Product Name: Isobar 2 Outlets Surge Suppressor Marketing Information: Loaded with a generous combination of high quality components, near indestructible all-metal case and enhanced noise filtration system, Isobars offer the highest level of protection. Robust surge suppression circuits... |
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