| Long Ferrite Antenna Rod Elements for SW, AM, LW, VLF, ULF, SLF, ELF.
|
PLASTIC COATED FERRITE RODS
Ferrite rods concentrate magnetic fields and radio waves. To use as an antenna just wind turns of wire on the rod and then connect a capacitor to tune it to desired receive frequency.
We are offering brand new ferrite rods of 125u and 2000u permeabilities.
We have 125u permeability "M" type ferrite rods in 1-inch diameter size. These are best for use in the frequency range between 200 KHz to 20 MHz.
125u is a general use material that works at medium frequency and high frequency.
We have 2000u permeability "T" type very low frequency ferrite rods of 1-inch diameter size. These are best for use in the frequency range between 50 Hz to 500 KHz.
2000u is a material that works at extremely low frequency, super low frequency, ultra low frequency, very low frequency, and low frequency.
Ferrite rods are made up of special ceramic magnetic materials wherein the magnetic molecules (domains) have the ability to align freely with external magnetic fields. The result is a powerful gain in strength (amplification) of the received radio signal but without adding any electronic "hiss" noise. Its like a pre-amplifier but requires no external power except for the incoming signals.
We have long thick ferrite rods for use in your specialized radio receiver or transmitter. These are not the brittle thin ferrite rods that break easy that you might be familliar with. Our ferrite rods are made with a plastic coating to help prevent breakage and provide a smooth non-abrasive electrically insulating winding surface.
We have ferrite rods in lengths from 4.5 inches long to 27 inches long.
All of our plastic ferrite rods are weather-proof and water-proof and they resist shattering due to the plastic casing.
Benefits of our plastic coated ferrite rods:
Won't break in two if stressed.
No rough edges that could cut your wires.
No electrical short-circuit to the ferrite (loss of "Q").
Weather-proof and Water-proof.
Environment will not contaminate ferrite quality.
Clean to handle: your hands and equipment won't get dirty.
Smooth clean white plastic surface gives high contrast so you can easily see your wire work.
Plastic case is about 1/8th inch thick. Your antenna coil is electrically insulated from the ferrite.
Plastic case outside diameter is about 1 and 3/8ths inches.
Ferrite rod material diameter is a THICK 1 inch to allow transmitting and receiving.
Circumferance: Holds 4.25 inches of wire per turn. (Example: 100 turns requires 35.416 feet of wire).
125u Plastic Ferrite Rods
Ferrite rods made from premium ferrite material.
These 125u ferrite rods are for use in the 200 KHz to 20 MHz range.
This ferrite rod is for use in super-sensitive antennas, especially the AM broadcast band 530 KHz - 1710 KHz, and narrow bandwidth antennas in the longwave bands below 530 KHz.
S/H extra.
U.S.A. only. No Foreign Orders.
125u
Part # | Ferrite Length | Ferrite Outside Diameter | Ferrite Weight | Test Frequency * | Test Inductance ** | __Price |
| VFR4M | 4.5 in | 1.0 in |
6 oz | - | - | $ 16.00 |
| VFR5M | 5.6 in | 1.0 in |
8 oz | - KHz | - | $ 19.75 |
| VFR6M | 6.7 in | 1.0 in |
10 oz | - KHz | - uH | $ 23.50 |
| VFR7M | 7.8 in | 1.0 in |
12 oz | - KHz | - uH | $ 27.25 |
| VFR9M | 9.0 in | 1.0 in |
14 oz | - KHz | - uH | $ 31.00 |
| VFR10M | 10.1 in | 1.0 in |
1 lb 0 oz | 500 KHz | 663 uH | $ 34.75 |
| VFR11M | 11.2 in | 1.0 in |
1lb 2 oz | - KHz | - uH | $ 38.50 |
| VFR12M | 12.3 in | 1.0 in |
1 lb 4 oz | 475 KHz | 730 uH | $ 42.25 |
| VFR13M | 13.5 in | 1.0 in |
1 lb 6 oz | - KHz | - uH | $ 46.00 |
| VFR14M | 14.6 in | 1.0 in |
1 lb 8 oz | - KHz | - uH | $ 49.75 |
| VFR15M | 15.7 in | 1.0 in |
1 lb 10 oz | - KHz | - uH | $ 53.50 |
| VFR16M | 16.8 in | 1.0 in |
1 lb 12 oz | 444 KHz | 833 uH | $ 57.25 |
| VFR18M | 18.0 in | 1.0 in |
1 lb 14 oz | - KHz | - uH | $ 61.00 |
| VFR19M | 19.1 in | 1.0 in |
2 lb 0 oz | - KHz | - uH | $ 64.75 |
| VFR20M | 20.2 in | 1.0 in |
2 lb 2 oz | - KHz | - uH | $ 68.50 |
| VFR21M | 21.3 in | 1.0 in |
2 lbs 4 oz | - KHz | - uH | $ 72.25 |
| VFR22M | 22.5 in | 1.0 in |
2 lbs 6 oz | - KHz | - uH | $ 76.00 |
| VFR23M | 23.6 in | 1.0 in |
2 lbs 8 oz | - KHz | - uH | $ 79.75 |
| VFR24M | 24.7 in | 1.0 in |
2 lbs 10 oz | - KHz | - uH | $ 83.50 |
| VFR25M | 25.8 in | 1.0 in |
2 lbs 12 oz | - KHz | - uH | $ 87.25 |
| VFR27M | 27.0 in | 1.0 in |
2 lbs 14 oz | - KHz | - uH | $ 91.00 |
Build an AM radio!
Ferrite Technical Properties Charts
Prices subject to change without notice. All sales final (So you know you're getting a brand new ferrite rod, not a used or pre-owned one, thank you!).
Shipping/Handling charges are extra, depends on weight and size of box at actual time of shipping.
* Test Frequency is for example: When a coil of wire is wound and centered on the rod: 71 turns of # 22 copper wire and a 151 pF capacitor is used for resonating the coil.
** Test inductance is measured when a coil of wire is wound and centered on the rod: 71 turns of # 22 copper wire.
2000u Plastic Ferrite Rods
Low Frequency ferrite rods made from premium ferrite material.
These 2000u ferrite rods are for use in the 50 Hz to 500 KHz range (max). Works best below 200 KHz.
Learn more about VLF here
Outer Circumferance: Holds 4.25 inches of wire per turn.
Length of case: Outer case length is 1.25 inches longer than ferrite rod length.
Ferrite Technical Properties Charts
U.S.A. only. No Foreign Orders.
2000u
Part # | Ferrite Length | Ferrite Outside Diameter | Ferrite Weight | Test Frequency * | Test Inductance ** | __Price |
| VFR3T | 3.4 in | 1.0 in |
4 oz | KHz | uH | $ 12.00 |
| VFR4T | 4.5 in | 1.0 in |
6 oz | 540 KHz | 537 uH | $ 15.00 |
| VFR5T | 5.6 in | 1.0 in |
8 oz | 506 KHz | 627 uH | $ 18.75 |
| VFR6T | 6.7 in | 1.0 in |
10 oz | 467 KHz | 735 uH | $ 22.50 |
| VFR7T | 7.8 in | 1.0 in |
12 oz | 438 KHz | 831 uH | $ 26.25 |
| VFR9T | 9.0 in | 1.0 in |
14 oz | 421 KHz | 907 uH | $ 30.00 |
| VFR10T | 10.1 in | 1.0 in |
1lb 0 oz | 408 KHz | 962 uH | $ 33.75 |
| VFR11T | 11.2 in | 1.0 in |
1 lb 2 oz | 395 KHz | 1027 uH | $ 37.50 |
| VFR12T | 12.3 in | 1.0 in |
1 lb 4 oz | 384 KHz | 1088 uH | $ 41.25 |
| VFR13T | 13.5 in | 1.0 in |
1 lb 6 oz | 376 KHz | 1128 uH | $ 45.00 |
| VFR14T | 14.6 in | 1.0 in |
1 lb 8 oz | 370 KHz | 1170 uH | $ 48.75 |
| VFR15T | 15.7 in | 1.0 in |
1 lb 10 oz | 365 KHz | 1195 uH | $ 52.50 |
| VFR16T | 16.8 in | 1.0 in |
1 lb 12 oz | - KHz | - uH | $ 56.25 |
| VFR18T | 18.0 in | 1.0 in |
1 lb 14 oz | - KHz | - uH | $ 60.00 |
| VFR19T | 19.1 in | 1.0 in |
2 lb 0 oz | - KHz | - uH | $ 63.75 |
| VFR20T | 20.2 in | 1.0 in |
2 lbs 2 oz | - KHz | - uH | $ 67.50 |
| VFR21T | 21.3 in | 1.0 in |
2 lbs 4 oz | - KHz | - uH | $ 71.25 |
| VFR22T | 22.5 in | 1.0 in |
2 lbs 6 oz | - KHz | - uH | $ 75.00 |
| VFR23T | 23.6 in | 1.0 in |
2 lbs oz 8 | - KHz | - uH | $ 78.75 |
| VFR24T | 24.7 in | 1.0 in |
2 lbs 10 oz | 305 KHz | 1705 uH | $ 82.50 |
| VFR25T | 25.8 in | 1.0 in |
2 lbs 12 oz | - KHz | - uH | $ 86.25 |
| VFR27T | 27.0 in | 1.0 in |
2 lbs 14 oz | - KHz | - uH | $ 90.00 |
Green area on chart shows recommended operating frequency range.
ORDERING:
Prices subject to change without notice. All sales final. (So you know you're getting a brand new ferrite rod, not a used or pre-owned one, thank you!).
Shipping/Handling charges are extra, depends on weight and size of box at actual time of shipping.
* Test Frequency is for example: When a coil of wire is wound and centered on the ferrite rod: 71 turns of # 22 wire and a 151 pF capacitor is used for resonating the coil.
** Test inductance is measured when a coil of wire is wound and centered on the ferrite rod: 71 turns of # 22 wire.
Solid Bare Monster Ferrite Rods / Tuning Slug.
125u permeability for use at frequencies between 3 KHz to 30 MHz.
ONE INCH THICK!
For use in new radio equipment.
Attention OEMs: We can supply thousands of pieces!!!!
THICK and LONG monster-sized rods will make your new radio equipment outperform the competition!
1 inch thick! These monster ferrites really pull in the weak signals!
No plastic coating. Wind coil directly onto the ferrite. 125u ferrite is insulative (not electrically conductive).
125u
Part # | Ferrite Length | Ferrite Outside Diameter | __Price |
| VFR-1000-1120M | 1.12 in | 1.0 in |
$ 4.95 |
VFR-1000-1120M is in stock.
This "mini monster" solid uncoated bare short length ferrite rod is useful in antennas and tuned circuits up to 30 MHz.
If you need a short sized rod that can handle some power. (Should do about 5 watts, QRP).
Great for building "slug tuned" shortwave dipole antennas or building a compact loading coil for tuning vertical mobile whips.
Manufacture Year of current stocked lot is 2009.
S/H extra.
ONE INCH THICK!
8 INCHES LONG!
125u
Part # | Ferrite Length | Ferrite Outside Diameter | __Price |
| VFR-1000-8000M | 8.0 in | 1.0 in |
$ 84.95 |
Large and Thick! Pure solid signal pulling power! This giant monster ferrite rod is highly magnetically conductive! With this solid monsterous beast of an antenna rod in your equipment, you will hear the weak signals easily!
VFR-1000-8000M is new. Lead time @ 4 to 6 weeks. This new item is for use in new equipment. Manufacture Year is 2010. We can supply 1000's of pieces. Premium ferrite material. This huge giant monster solid ferrite rod will make your equipment perform excellently. 125u material is temperature-stable over a wide range. High curie temperature. 125u mix is designed for high "Q" narrow band antennas that operate over a wide temperature range.
LIST OF Do-It-Yourself RADIO PROJECTS:
Build an AM radio!
VLF Receiver with Signal Strength Meter.
Wideband ULF - VLF Pre-amplifier.
VLF / LF (Tunable) Pre-amplifier
ELF Magnetic Field Detector.
VLF Whistler Receiver.
TUNING DATA
Part # VFR-12M: Winding for Shortwave: Tuning data with an 0 to 450 pF variable capacitor and widely spaced turns along the whole length of the ferrite rod: Frequency span may vary depending on wire size and wire diameter and turns spacing that you use. For tuning shortwave radio use solid copper wire between 18 to 22 gage.
17 turns gives @ 1.600 - 5.000 MHz.
9 turns gives @ 3.000 - 7.000 MHz.
6 turns gives @ 4.000 - 12.000 MHz.
4 turns gives @ 5.000 - 16.000 MHz.