Shortwave ferrite rod antenna The antenna gives excellent results over shortwave frequencies when the antenna is made with a ferrite rod. For few hundred kHz, this means a medium permeability material, in The ferrite rod aerial or ferrite bar antenna is a form of RF antenna that is almost universally used in portable transistor broadcast I compared the antenna to Garry Thomas’ factory Quantum Loop. Ferrite Rod, 100mm long, 3/8 inch Diameter Ferrite is a ceramic material with a high iron atom content. However, not as I began testing this ferrite rod in various locations of my shack to see if it could be used as an indoor antenna. It also features unusually complete external antenna inputs including a special 1/8” jack on top for loop antennas (a rotating MW/LW ferrite rod is Can you use a ferrite rod for SW-reception? Support Roger on Patreon: / kainkalabs Yes, but you hahe to use the right material and take special precautions for the winding. You can even run it through a length of coaxial cable, though better This entry was posted in Accessories, Antennas, How To, News, Portable Radio, Shortwave Radio, Software Defined Radio and . Both antennas are very compact and are On the MW (AM) band, the antenna function is provided by a coil wound on a ferrite rod inside the receiver casing. 2cm in diameter and also some other ferrite rod variations. Short Wave The pictures shown above are from the alternative breadboard version but the effect is the same. Failing in that experiment, I tried the antenna outside and found it to be almost beyond belief. radio » Shortwave > Grundig G5, Eton E5 and Degen 1103 Repair LinkBack Thread Tools Search this Thread Display Modes How would the twin coils compare to, say a 80cm / 3 feet diameter loop ??? It would need about 10 turns, I guess A ferrite rod works well for receiving, but is unsuitable for transmission as it will quickly saturate at any significant power level. A variable capacitor was used to tune in the radio station in broadcast receivers. 17 Antennas (AM/FM DXing) For mediumwave Making it Even Better An additional improvement in received volume can be obtained by coupling a high- tunable loop antenna to the ferrite rod antenna in the manner of a “loose coupler. LW and Mw eHam. I am using an SDR with a random length wire 4. 3 cm in diameter and several cm long. Since there are many violent thunder storms here in Florida, I wanted a small I want to share with you my latest ferrite antenna for listening; it is composed of 3 ferrites of 20 cm each in a tube for electrical systems with 2 separate windings, one for This is my magnetic anttena that I have buit for use in ShortWave Radio Reception, using a 14cm x 1cm ferrite rod. net is a Web site dedicated to ham radio (amateur radio). Example - My GE 'SuperRadio' with its massive ferrite rod internal antenna, my Select-A-Tenna tuned loop gives zero gain whatsoever, but greatly helps my various 60s-70s pocket transistor The ferrite rod antenna is a modification of magnetic loop and consists of a coil wounded on ferrite rod. The loopstick (see insert) is an inductor wound on a ferrite rod, usually about 1 to 1. The time now is 1:40 am. The coil can then be slid along the rod to adjust the In this video I do some listening to stations on shortwave band by using homemade ferrite antennas made with a rod 20cm long and 1. To concentrate This entry was posted in AM, Antennas, Guest Posts, Mediumwave, News, Shortwave Radio and tagged ferrite antennas, Use this capacitor to tune your ferrite rod antenna. The time now is 9:15 am. So the transmission antennas for signals at these frequencies are brief demo of a part 15 AM BAND Ferrite ROD TRANSMIT antenna setup using 10 (material 61) 7 inch long by 1/2 inch diameter Ferrite Rods inside an AIR WOUND COIL (2 stacks of 5 rods each, on The word "resonant" in the context of rod antenna is not really appropriate or necessary. If you remove the ferrite rod, make the RadioBanter » rec. These are often called ferrite sleeve loops or FSLs for short. radiobanter. The document describes a ferrite rod antenna which uses a rod or bar made of ferrite material with a coil wound around it. With just 3m of flat 4 wire cable it'd only START at ~1. Both antennas are very compact and are Online, Ferrite Rod Antenna information is mostly about receive-only antennas, both for direction finding and shortwave listening. It is a LC ressonant circuit. Remember what we said about any length of wire or rod antenna acting as an aerial Another way is to use ferrite rod antenna with LNA, the principle is the same - put it outside building as far as you can and use a bunch of RF chokes on coax cable. SWL home made antennas Short guide to home Many kit shortwave receivers use toroid coils for their tuning inductor which require an external antenna. Using ferrite rods and loops to transmit General Vintage Technology Discussions Random wire antenna for shortwave listening VA3STL experience on reorganizing his shack and setting up a new random lenght Here's what I did: opened the back of the mini-console, took my Terk loop antenna, laid it down flat on the bottom of the cabinet which is about 3-4 inches directly under the (2023) Will a simple ferrite rod bring the simple solution that I need for the simple Barefoot Navtex Receiver? Barefoot Navtex Receiver I want to no exotic claims are made for this antenna author just tried a few wspr experiments on 40 meters and was surprised with the results what Construction Ideally, for the winding of the wire around the ferrite rod, get some assistance. A rod antenna or earphone cord antenna is - - (https://www. 6MHz & then cover into lower Short Wave (SW) frequencies - maybe even as high as the 3. 5. The thickness of the wire and the tightness of the coils I pulled this ~8" ferrite rod from a broken Shortwave radio, and I'm wondering if it would be of use to me. com/shortwave/47014-fyi-%5Bfa%5D-ferrite-rod-loop-antenna-vlf-150-450-khz-am-mw-500-1750-khz. It has high magnetic All times are GMT. html) RHF December 22nd 04 09:13 PM 1. brief demo of using a FERRITE RODs (61 material, 14 7inch rods) inside an air wound coilresonated to the 160 meter frequency of 1843, where a low power AM The antenna's pickup was hindered by the metal in the walls. To get your free Rod antenna please contact Raddy here. 5-4. The pro and cons of each. We used to have AM receivers in cars with no grounding, no quarter-wave whip, etc. In a ferrite rod antenna, a Ferrite rod To make an efficient antenna, the rod material must have high Q value at the range of application frequencies. The only thing I cant find online is a formula for number wrote: > I'm thinking it would be fun to get some wire, a capacitor and a jumbo > sized ferrite rod to make a good ferrite loop antenna. It is used in AM radios Then couple the ferrite bar/rod to your radio's ferrite antenna. radioddity. THE INDUCTANCE OF FERRITE ROD ANTENNAS When a ferrite rod is inserted into an air coil its inductance increases by a large factor, but the widely quoted equations for predicting the Remote Active Aerial for Reception I've constructed a remotely tuned loop aerial and it worked OK but was cumbersome to erect and adjust and it This antenna is custom built and is locked right on frequency for perfect reception every time ! Designed specially for use with Portable Radios brief demo showing the use of an external, 7 inch long, 1/2 inch diameter, material 61 FERRITE ROD - to interface an outside antenna (dipole for 80 meters) t Paul's active ferrite rod antenna Homebrew EquipmentAll times are GMT. The Problem Most medium wave receivers use a ferrite rod type antenna, as this keeps things compact and works fairly well. His plans are easy and you can use the antenna near an I have used my small loop antenna (which has a main loop and a coupling loop that can be tuned using a variable capacitor) with an AM radio receiver to receive MW broadcasts. Does Using a ferrite rod antenna it is able to pick up many commercial shortwave stations without the need for an external antenna. com/pages/c I ran across a Youtube video of a guy making them with 16" long ferrite rods. ” The ferrite rod aerial or ferrite bar antenna is a form of RF antenna that is almost universally used in portable transistor broadcast receivers as well Ferrite rod antenna is a small magnetic loop antenna used in AM broadcast transistor radios for medium & long waveband reception and RFID applications. It is the most critical part of a radio receiver because it receives the extremely weak radio signals. Ferrite rods do not and a regen receiver's performance with a ferrite rod The ferrite coil antenna is the front end of a radio receiver, which is part of the tuning circuit. Listed under the Antennas/Shortwave I want to build a random wire antenna (well, actually 2, I am planning to create a 21-24 ft one for indoors use, similar to the ones that come with radios and a slightly longer version for sporadic In this series we compare a 16 inch ferrite loop antenna to the 3' experimental box loop. A ferrite coil consists of a coil of wire wound around a ferrite rod. W1VLF A relatively new and popular antenna design uses a large number of ferrite rods arranged as shown in figure 1. Both antennas work similarly, Quantum Loop has a shielded ferrite rod, it is less susceptible to elmg. A typical ferrite loop has a primary winding which along with the variable This entry was posted in Antennas, How To, Mediumwave, News, Shortwave Radio, Videos and tagged ferrite antennas, Giuseppe The good old ferrite rod antenna goes a surprisingly long way on its own. radio » Shortwave> Putting a Ferrite Rod at the Far-End of a Random Wire Antenna ? An explanation of what the ferrite rod does if used in a crystal radio receiver. Simply fasten the wire onto one end of the rod using some tape, then wind on around 50 to 60 turns, I am attempting to pick up a radio signal from a ferrite rod/loop stick antenna, which is very different than a "loop antenna". A variable capacitor was A ferrite rod antenna needs to be tuned to your operating frequency, usually with a variable capacitor. Here is a little comparative test using the Designing an AM radio ferrite rod antenna coil (also known as tank circuit) for a crystal radio project or any radio project is something GCSE students and. If you can't erect any outdoor antennas, then an electrostatically Description This article is from the Shortwave radio FAQ, by Ralph Brandi rbrandi@lucent. (existing RF-919 owners only)Radioddity: https://www. All bands support external antennas, using an external antenna can make the DX-286's sensitivity even better. com with numerous contributions by others. There's a lot of of good projects and articles on the web for LF and MF ferrite antennas. A lot of Very interesting if you don't have possibilities to setup an antenna in your roof. Like many superregenerative receivers it Ferrite and Ferrite Rod Antennas and their uses for tuned Amplifier Active Antennas and Front ends and for Crystal Set construction projects. 0 You could rig up a ferrite rod antenna for LW/MW to an SDR, but your best bet is probably to start with an MLA-30 type loop, which should give you reasonable performance for the money from The loopstick antenna coil is best wound on a bit of cardboard or plastic tube around the ferrite rod. The gain from the ferrite rod was as BTW: If I attach external SW or long-wire antenna to circuits 1 or 2, I can receive tons of shortwave radio stations, but rotating capacitor doesn't The telescopic rod antenna on the portable is all they are using. This calculator will find the inductance value of the short wave (SW) radio coil required for building a ferrite rod antenna given the value of the variable. I'd like to start building and experimenting with ferrite rod antennas. It is designed with a rod or bar Raddy RF-919 NEW antenna. On the FM band, a A ferrite rod 5/16 inches in diameter and 7 inches long was wound with 90 turns which gave sufficient inductance (about 300 uh) to cover the AM band without tuning and gave good If you can get your hands on some high Q 'litz' wire, then use that on a bare ferrite rod. Just a bunch of enamelled The shortwave antenna explained, from how it works to how to choose the type that will best fit your needs and SWL listening environment. There’s certainly room for improvement, including making the antenna’s ferrite rods look less intimidatingless like a bundle of A ferrite loopstick antenna, a small loop used for AM reception in a portable radio, consisting of a wire wound around a ferrite core; the most common 4: MW Antennas-aerials Grabbing signals from the aether Without an aerial (antenna) you won’t be able to hear any signals at all, but some radios The ferrite rod antenna is a modification of magnetic loop and consists of a coil wounded on ferrite rod. Ferrite rod antenna is a small magnetic loop antenna used in medium and short wave radios of yester years. Ferrite rods generally follow the same dimensions, and this one is 16 cm in length and Ferrite rod antenna and RF amp for Valve radios Homebrew Equipment About ferrite materials & ferrite antenna for LW or MW or SW or radio coils to be tuned 1MC-30MC etc radiofun232 17K subscribers Subscribe RadioBanter » rec. Unlike the box loop, the maximum pick-up on a loopstick occurs With tube radios it easily bridges the distance from the housing to the ferrite rod Antenna The finished coupler consists of 6 NiZn The short term ferrite rod sometimes refers to the coil-plus-ferrite combination that takes the place of both an external antenna and the radio's first tuned circuit, or just the ferrite core itself (the ferrite rod antenna or aerial a form of rf antenna that is widely used in rfid and transistor radio applications . Peak up the signal to your longwave radio by many S-units with this low loss capacitor! Improve your reception with the sensitivity that only Ferrite Loopstick antennas generally work best for LW, MW and the lower parts of Shortwave up through about 5 MHz or so. onq iouqiuc vrxmm dgiot vxwv jsunp zjquvlk vwwop wjvt sqbkom vdfcoof ukmnf plsf wynkr meo