Antennas Home-made antennas can greatly improve the performance of AM and FM radios, short-wave receivers, and scanners. If you are a talk-radio fan then experiment with the AM band antennas and you will be able to hear shows from all over the country with surprising clarity. Short-wave receivers are always coping with weak signals and they must have a good antenna to perform adequately. Scanners can pick up local police and two-way radio with the little telescoping antenna provided but with good antennas a scanner becomes an amazing ear on the world nearby. No pre-amp, filter or other receiver refinement offers anywhere near the level of performance improvement t that a well-designed antenna offers. The results can be quite satisfying, leaving no doubt that the project was well worth the effort. Active MHz Hula-Loop Antenna for Shortwave In the past, designs that incorporated an amplifier in the antenna were called “antennafiers” so perhaps this is a “loopifier”. The differential amplifier solves matching issues and the varactor tuning gives excellent out-of-band rejection for even cheap receivers. I think the good common-mode rejection from the differential amplifier eliminates the need for a shield, too.
Good AM/FM antenna
For good reception in rural areas and most small towns, a good external antenna was required. A good antenna would usually be about ‘, insulated on both ends, strung up on the roof, tall poles or from house to barn with a down-lead in wire connected to radio’s antenna input. Of course a lightning arrester would be part of the installation. The wire’s gage is not important except it must be strong enough to support itself.
Typical outside antenna installations. Nearly all US built radio receivers made from the early days to the late ‘s required an external “long wire” antenna.
Our AM RADIO DX LOOP ANTENNA converts your portable transistor radio into a long distance receiver, capable of pulling in distant AM radio stations. Works with any portable radio, without complicated connections.
I haven’t seen one, but I understand that it was a “muffler” looking design and would provide a degree of selective tuning that is not possible with my original, wider unit. Glenn Roberts , It only rotated a little bit inside the cabinet. The wire appears to be 10 gauge solid. I might have an extra if your interested. Let me know and I will look.
The came with a square loop made from two fairly large diameter wires, but it isn’t able to rotate through more that ten or fifteen degrees within the cabinet. My understanding is that an earlier model had a loop that was constructed such that it was more rectangular and could be rotated to a much greater degree. I’ve seen the loop described as looking like a “muffler”. Zenith had an early “Wave Magnet” that looks very much like what I have imagined this early Philco loop to be. The Zenith was also enclosed in what looks to be a cardboard box.
Instructions for an AM Loop Antenna
Improving your AM AM Radio Reception – How to boost your reception- A 5 minute lesson on how you can dramatically increase your AM Radio’s signal, get rid of that horrible noise and static, and a look at what could be causing your problems. Why not just listen to the internet? AM Radios are portable and with the right AM antenna, you can listen to long distance radio stations, especially at night!
AM Radio — How do I boost my signal?
Page 1: Antenna Connections Use this simple and quick way to listen to Hook Up Hook Up your favorite CD, cassette, or radio station. Guide Guide C M O CONNECT YOUR SYSTEM FOLLOW THESE STEPS ANTENNA CONNECTIONS Connect the supplied AM loop antenna to the AM ANTEN- .
The RF amplifiers use a combination of tuned grid input and tuned plate output using a three-section ganged tuning capacitor. The antenna switch allows the user to select which receiver will be connected to the antenna – either the AR or an emergency receiver. The audio output can drive the panel mounted loud speaker or headsets either simultaneously or, using the Loudspeaker switch, the panel speaker can be turned off.
The receiver requires a separate power source of which many types were available. These functioned on ships that provided vdc or vdc power. If vac was to be used then the RM Rectifier power supply was used. The AR requires 6. Top of the chassis showing the antenna connections far left front of chassis and the power input connections far right back of chassis. The tuning condenser is under the central cover. Under the chassis showing the bee’s wax impregnated coils. The AR could be provided with a cabinet and shock mounts if it was to be used as a “stand alone” receiver.
How do I connect an external AM antenna
The fault may not be with your signal or even your location in relation to the transmitting tower. The ferrite coil antenna in most AM radios is a small rectangular bar that is just large enough to allow the radio to receive local stations. You can improve your reception by improving your antenna. Loop Antennas A loop antenna, as the name implies consists of a loop or number of loops made of copper wire wound on a nonconductive frame.
Long Wire and Dipole Antenans for ham radio is a curation of resources about, Wire antennas for ham radio, Wire Antennas for Ham Radio, K0RWU Multiband dipole meters, W1AB Killer Antenna, G4RV Antenna. Resources listed under Wire Antennas category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators.
If you have any questions, comments or suggestions, please don’t hesitate to contact me at: This is especially apparent on weaker DX stations. The whip on your shortwave receiver used to be sufficient to pull in some good DX, but now you find yourself looking for something better. Maybe you have been thinking, or even have already tried, putting up a wire antenna. Perhaps you live in an apartment or are situated where installing a wire antenna is simply not feasible.
Consider the small single turn magnetic loop antenna if any of the above situations apply to you.
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If you ordered any other accessories then they will also be included. The AM antenna has quite a bit more to it. If you ordered any additional cable then this would also be included. Setup Setting up the radio is just as easy as setting up the clock radio on your night stand.
Note that the AM loop will still pick up some noise components from the receiver surroundings, but the much stronger signals from the active antenna will help to override much of this noise Coupling Loop with Attached F Connector.
Jani Turkia, K5KI ham k5ki. Sure, there are ready-to-go units that only require a credit card number, but is it not more fun to convert a radio from 11 meters to 10 meters, at minimal expense? Such a radio would be great for both mobile and fixed station use, and capable of world-wide contacts. How much would such a conversion cost, if you had a suitable radio for conversion?
Would you believe not a cent? How do you convert a very common CB radio for use on the 10 meter AM frequencies with excellent performance, with a minimal investment? Back in the late ‘s and early ‘s, there were several articles in ham magazines about converting various CB radios to 10 meters. The Cybernet board based radios, with the PLL02A phase-locked loop circuit and the three crystals, used in many different brand radios, were especially popular to convert, by changing from an Penney, and many other manufacturers used these boards.
Knickerbocker1 and Bob Heil2,3 gave good explanations of steps necessary to convert these to ten meter FM. I converted several radios at the time using these methods, with a few minor variations. Recently, I decided to try my hand at it again. I would encourage studying their articles, before attempting a similar radio conversion.
While these radios are relatively easy to find, at hamfests and on the internet auction sites, the price for the needed crystal was often more than the radio.
Am loop antenna hook-up
It is not necessary to ground the antenna if there is no radio noise. The wire can either be wrapped around the lug or shaped with needle nose pliers first. You can mount the ELEMENT away from where you have placed the three or four feet of wire into the ground but it is best to keep the distance as short as possible. Moisture content of the soil may also affect performance. Damp soil is better than dry soil. The Select-A-Tenna when used in conjunction with the Justice Antenna, produces curious results and in some cases marked improvement.
For surround sound, you’ll want to hook up using a digital connection from the DVD player to the receiver. You can do this with either a coaxial, or an optical connection (you don’t need to do both).
A Slinky JR has approx Now if you were to use coax with a ground shield with the ground terminated then you antenna would only be the lenght of the slinky Regular Slinky 65 feet Slinky Jr Also if you were to use more than one slinky you would just add the lengths together to get the total lengths with lead in wire or with the coax. An antenna made from Slinky coils -is light weight and simple to put up and if need be out of sight. Slinky type antennas are great for improved broadcast.
Another use is for ham radio transmitting in a limited space environment or outdoors where the antenna can be many times smaller than a regular dipole, long wire, inverted v or vertical antenna. Slinky antennas can be made to cover any frequency range in the medium and short-wave bands for receiving or transmitting. While we have been experimentation with slinky coils as antennas since the ‘s, we love to play with them and seem to discover something new every time we put one up or adjust the ones we have up.
No doubt there is still much to be discovered! A standard original Slinky coil is a quarter wave between 7 and 8 megahertz when stretched out to only 5 to 15 feet. To tune the Slinky within that range, all you have to do is extend the coil to approximate size then expand -or -contract it to reach the desired resonance.
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Wrench for GPS antenna connector. Heat shrink gun or small soldering iron optional. Large channel-lok pliers optional. I have no backup camera, amps, subwoofers, etc.
the end of the PVC hook-up wire lead around the inner end of L1. On the prototype, a 3-turn coupling coil and W transmitter light five of the six bulbs when the loop is fully loaded.
In other words, a well-soldered 10 wire would definitely be superior to 1-inch tubing that uses alligator clips for a connection. Each time you double the OD of the wire or tubing, you can expect about a 3db increase in efficiency. For wire, this is pretty easy. Electrical Balance Normally an electrically well-balanced vertical small loop will produce null depths that are equal on each side of the loop – hence you only need to rotate it degrees to find a null.
In this simple case with nothing but a direct connection to coax, you should rotate it degrees to find the side with the better null depth. In this instance, we have connected a balanced antenna to an unbalanced feedline.
Loop Antenna is Portable
Created Aug 9, ; Last updated May 6, A remotely-tuned loop receiving antenna for LW and MW If your only knowledge of suburban Maryland comes from seeing the movie The Blair Witch Project, you probably think Maryland is a vast wilderness where it would be easy to pick up longwave broadcasts without interference. Unfortunately, this is not really true. In fact, noise from power lines and computers in Maryland especially networking equipment such as hubs and routers often makes it difficult to hear anything in the LF band.
Added to this is the inefficiency of the internal antennas of many receivers in the LF and VLF region. A loop antenna can solve both of these problems.
An untuned loop will attach to the ground and AM antenna terminals on an stereo receiver or tuner. This loop can be made from a simple wood frame, or cross, with brass shoulder hooks on each arm.
Just saw this in the classifieds Describe your radio, does it have AM antenna terminals? A built in ferrite stick antenna? The best solution I have found for AM broadcast band is a loop. There are two kinds, tuned and untuned. An untuned loop will attach to the ground and AM antenna terminals on an stereo receiver or tuner. This loop can be made from a simple wood frame, or cross, with brass shoulder hooks on each arm. A shoulder hook is similar to a cup hook.
A hardware store item. Screw them together to form an X or cross.
The G4ILO Wonder Loop
I spent several months putting the programming together using a piece of free radio automation software called Zara Radio. Adding songs is not quite as easy a process as ripping songs into your iTunes. As well as ripping the songs from CD, I have to trim any excess silence from the beginning of the song and then mark the exact segue point, so that the software knows at which point to start the next song.
It takes a little while to do this, and I have now done it for individual songs, as well as producing sweepers, promos and other little doo-das that all go to make a radio station sound like, well, a radio station.
To connect an external AM antenna, follow these steps: Insert the AM antenna plug into the AM Antenna jack on the back of the Bose® system Place the circular loop of the antenna as far away as possible from sources of electromagnetic interference, such as fluorescent lights, dimmer switches, etc.
Fortunately a loop aerial is extremely easy and very cheap to construct, you may even have most of the parts required in your junk box. I offer a few pointers to the construction of loop aerials below. ATUs For good Short Wave reception long ‘random wire’ aerial really is required to dig those distant stations out of the ether. To effectively couple such an aerial to a radio a matching unit called an ATU Antenna Tuning Unit can be extremely helpful. An ATU is relatively straightforward to construct and uses simple parts that are quite easy to obtain.
LOOP AERIALS A loop aerial is extremely helpful when trying to receive long distance stations, not only will it dramatically ‘boost’ the signal received compared to using a portable radio’s internal ferrite rod aerial because a loop aerial is much bigger than a ferrite rod, but it also has two other very useful properties: Directivity is very useful in that it can often be used to ‘null out’ an interfering station and selectivity is useful to overcome overloading of the radio’s ‘front end’ as the loop will tune very sharply to the required frequency will rejecting all others.
When using a communications receiver a frame aerial might be more convenient than installing a ‘long wire’ antenna. Although a frame aerial might not collect as large a signal as a really long wire, the directional properties are very useful for nulling out interference from unwanted stations. Construction A loop can be made for Medium Wave and Long Wave and can be of almost any size you wish, although it must be small enough to fit in your listening room! The bigger the area of the loop the more signal it will collect, the portable loop described below is around 40 cm in diameter and is probably the smallest size worth considering to be effective and useful.
Traditionally loop aerials have been made on large frames about 1 meter square for use with communications receivers and is essentially just one long piece of thin ‘hook-up’ wire wound approximately 8 to10 times around a wooden or other non metallic frame.