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PLASTIC COATED VLF FERRITE RODS
600 Hz - 60 KHz
These plastic ferrite rods are excellent for weak signal VLF reception and LF reception.
POWERFUL 5000u permeability material pulls in VLF and LF signals.
Just 200 wire turns on the 9 inch ferrite rod is enough to hear VLF Tweeks at night, when connected to an audio amplifier of 3-K impedance with 1 millivolt input sensitivity. (Typical microphone-type input values).
Use this ferrite rod to make antennas, tune antennas, tune long wire antennas, match impedances between loop antennas, build an antenna for VLF.
Benefits of our plastic coated ferrite rods:
Plastic prevents total breakage if stressed.
No rough edges that could cut your wires.
No electrical short-circuit to the ferrite.
Weather-proof and Water-proof.
Environment will not contaminate ferrite quality.
Clean to handle.
Smooth clean white plastic surface gives high contrast so you can easily see and adjust your wire work.
Your antenna coil is electrically insulated from the semiconductive ferrite.
5000u VLF Ferrite rods for 600 Hz - 60 KHz.
For use in VLF- LF reception.
For use in lightning detection receivers.
Detect Tweeks, Whistlers, and more natural VLF radio waves.
Part # | Ferrite Length | Ferrite Diameter | u Value | Case Length | Case Diameter | Max Turns # 33 AWG | __Price |
| R623-2675665702-11 | 11.25 in | 0.685 in | 5000 u | 12.0 in | 0.875 in | 1370 | $ 45.00 + $ 15.00 s/h US Mail |
| R623-2675665702-23 | 23.45 in | 0.685 in | 5000 u | 24.0 in | 0.875 in | 2700 | $ 90.00 + $ 15.00 s/h US Mail |
| R623-2675102002-11 | 9.0 in | 1.02 in | 5000 u | 10.0 in | 1.3 in | 1000 | $ 70.00 + $ 15.00 s/h US Mail |
| R623-2675102002-11 | 11.25 in | 1.02 in | 5000 u | 12.25 in | 1.3 in | 1370 | $ 80.00 + $ 15.00 s/h US Mail |
| R623-2675102002-15 | 15.75 in | 1.02 in | 5000 u | 16.75 in | 1.3 in | 1800 | $ 110.00 + $ 15.00 s/h US Mail |
| R623-2675102002-22 | 22.5 in | 1.02 in | 5000 u | 23.5 in | 1.3 in | 2745 | $ 160.00 + s/h UPS ground |
| R623-2675102002-36 | 36 in | 1.02 in | 5000 u | 37.5 in | 1.3 in | 4200 | $ 200.00 + s/h UPS ground |
'Max Turns # 33 AWG' shows the maximum single layer of 33 AWG magnet wire the rod can hold.
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A simple VLF receiver, wideband, for listening to tweeks and whistlers.
Build it and connect the antenna of 200 turns(or more) to the input.
The output connects to any portable battery powered audio amplifier or tape recorder or digital audio recorder.
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.
FERRITE RODS
2300u Ferrite Rods for DC - 200 KHz
Part # ROD-038-2750T+
Ferrite rods greatly concentrate magnetic fields and radio waves, especially useful at lower frequency. They are easy to use as a directional antenna: just wind turns of wire on the rod and then connect a variable capacitor to tune it up to the desired receive 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 magnetic strength (amplification) of the radio signal but without adding any electronic "hiss" noise. Its almost like a pre-amplifier but requires no external power except for the incoming signals.
These 2.75 inch x 0.380 inch diameter 2300u ferrite rods are great for use at frequencies from DC through 200 KHz.
Antennas: Transmits and Receive,
Electromagnet cores,
Transformer cores,
Audio chokes,
RF chokes,
Metal detectors,
Electromagnetic sensors,
Custom inductors,
Speaker crossover coils,
Experimental motors and more.
| Part # | Ferrite Length | Ferrite Outside Diameter | __Price |
| ROD-038-2750-T+ (2300u) | 2.75 in | 0.380 in | $ 6.50 each + a/h |
800u COMPOSITE FERRITE RODS
Use this bare ferrite rod to make antennas, tune antennas, tune long wire antennas, match impedances between loop antennas, etc.
Elements are stacked, and glued, with a wooden center. Rods have @ 1/16 inch deep groove every at @ 1.125 inch.
ROD-623-2643102002-34-NP 34.8 inch long x 1.02 Ferrite Rod has a steel center for maximum strength.
ROD-623-2643102002-16-NP 16.8 inch long x 1.02 Ferrite Rod has a steel center for maximum strength.
800 NiZn Ferrite rods for DC - 300 KHz.
For use in ELF, ULF, VLF, LF, Long Wave
Great for radio reception below 300 KHz.
Great for radio transmitting below 300 KHz.
Part # | Ferrite Length | Ferrite Diameter | u Value | Overall Length | Max Turns # 33 AWG | __Price |
| R623-2643102002-9-NP | 9.0 in | 1.02 in | 800 u | 10.0 in | 1098 | $ 32.95 + $ 14.00 s/h US Mail |
| R623-2643102002-12-NP | 12.3 in | 1.02 in | 800 u | 13.3 in | 1500 | $ 44.95 + $ s/h US Mail |
| R623-2643102002-16-NP | 16.8 in | 1.02 in | 800 u | 16.8 in | 2100 | $ 99.95 + $ s/h |
| R623-2643102002-34-NP | 34.8 in | 1.02 in | 800 u | 34.8 in | 4200 | $ 169.95 + $ s/h |
'Max Turns # 33 AWG' shows the maximum single layer of 33 AWG magnet wire the rod can hold.
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.
LONG PLASTIC COATED FERRITE RODS
These plastic ferrite rods are excellent for weak signal reception.
Use this ferrite rod to make antennas, tune antennas, tune long wire antennas, match impedances between loop antennas, build an antenna for a crystal set, etc.
Benefits of our plastic coated ferrite rods:
Plastic prevents total breakage if stressed.
No rough edges that could cut your wires.
No electrical short-circuit to the ferrite.
Weather-proof and Water-proof.
Environment will not contaminate ferrite quality.
Clean to handle.
Smooth clean white plastic surface gives high contrast so you can easily see and adjust your wire work.
Your antenna coil is electrically insulated from the semiconductive ferrite.
125u Hi Q NiZn Ferrite rods for 1 KHz - 10 MHz.
For use in VLF, LF, Long Wave, AM Broadcast, Short Wave, HAM bands.
Great for narrow band radio reception, especially below 4 MHz.
These rods are excellent for AM broadcast band reception.
Part # | Ferrite Length | Ferrite Diameter | u Value | Case Length | Case Diameter | Max Turns # 33 AWG | __Price |
| R623-2661102002-6 | 6.75 in | 1.02 in | 125 u | 7.75 in | 1.3 in | 823 | $ 69.95 + $ 8.00 s/h US Mail |
| R623-2661102002-9 | 9.0 in | 1.02 in | 125 u | 10.0 in | 1.3 in | 1098 | $ 89.95 + $ 14.00 s/h US Mail |
| R623-2661102002-11 | 11.25 in | 1.02 in | 125 u | 12.25 in | 1.3 in | 1372 | $ 109.95 + $ 14.00 s/h US Mail |
| R623-2661102002-12 | 12.3 in | 1.02 in | 125 u | 13.3 in | 1.3 in | 1500 | $ 119.95 + $ 14.00 s/h US Mail |
| R623-2661102002-18 | 18.0 in | 1.02 in | 125 u | 19.0 in | 1.3 in | 2196 | $ 191.95 + s/h UPS ground |
| R623-2661102002-22 | 22.5 in | 1.02 in | 125 u | 23.5 in | 1.3 in | 2745 | $ 239.95 + s/h UPS ground |
| R623-2661102002-36 | 36 in | 1.02 in | 125 u | 37.5 in | 1.3 in | 4200 | $ 383.95 + s/h UPS ground |
'Max Turns # 33 AWG' shows the maximum single layer of 33 AWG magnet wire the rod can hold.
Winding and Tuning Data
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.
"Monster-Ferrite-Rods" is a trademark of STORMWISE.COM
You can build antennas that work with these build a radio plans:
Build an AM radio
Build a VLF Receiver for 10 KHz - 100 KHz