It is designed for portability, and can be assembled or disassembled in about a minute. When disassembled the antenna easily fits in a suitcase or backpack. The Wonder Loop is the perfect antenna for picnic table or hotel room operation, or for home station use where outside antennas are not permitted and attic antennas not possible. It needs no supporting mast, and no counterpoises or ground connections are required. Tuning is quick and easy. Performance is within an S-point or two of a dipole and better than many of the antennas often used in temporary or compromise locations. In good conditions the Wonder Loop should genuinely be capable of worldwide communication using low power, particularly if CW or PSK31 is used. These antennas are small and very portable, but you pay for this with a considerable penalty in efficiency.
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.
Apr 20, · A Dynamite Antenna for an AM Radio. By RangerJ in Technology Electronics. 93, 5. I rigged up one of these antennas, making a loop under the glass counter top. The difference was remarkable; all we had to do was hold the radio near the counter and signals would jump out of the speaker. I’ve used a tunable loop antenna.
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.
This article describes how to build a loop antenna for low frequency LF and medium wave MW reception with remote-controlled tuning. The antenna is extremely sensitive and can be built mostly from parts from old radios and tape recorders. Like all loop antennas, it is highly directional, which allows you to null out unwanted noise sources.
Diagram of the loop antenna. The main loop is 47 turns of wire two loops are shown in red around a frame made of 1-inch i. Because PVC is more flexible than wood, the frame must be braced to prevent bending.
The G4ILO Wonder Loop
The Twin Coil can double the signal strength of any weak station during the day. The antenna was designed to work with everything from portable radios without antenna connectors to home stereos with wire antenna terminals. Its wireless ferrite stick works on radios without antenna connectors, while the typical wire patch cord functions with radio antenna connectors found on stereos. In this case the additional antenna will only help with very weak signals where improvement is not already noticed.
If you have a favorite AM radio station but experience poor reception at the exact place where you want your radio, the Twin Coil can increase your AM radio reception significantly. The antenna element is capable of picking up a clean signal some distance from your radio and sending it to the radio and overriding the static.
The AM loop antenna needs to connect between the terminals marked as “AM ANT” and “GND” on the rear top right corner of the amp. This is the normal configuration for a 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? You hear the advertisements for the high performance radios all the time, but in reality, any small radio, even low performance portable radios can benefit from just a simple antenna, reducing the noise of your radio, or getting the radio into a better location. That’s because the gain of the antenna is more than the radio itself can possibly receive in the first place. Radio noise is horrible, because if you put a large antenna on your radio, it not only increases the signal, but it increases the noise generated by manmade devices.
So, that computer, the monitor, your high definition TV, or fluorescent light bulbs are some of the first culprits to look at. Read my other article, then come back here if you need to. Relocating the radio is the best solution if you insist on keeping that Plasma TV running. Try listening to the radio in the back of your house, or your garage. Most AM Radio antennas are inexpensive, simple to operate and will radically increase the power of your radio to levels you never imagined.
Antennas for AM reception are either Active requiring power and have circuitry or Passive not requiring a battery or power. Because the way they are designed, they are usually directional and you can physically point the antenna towards the signal.
How do I connect an external AM antenna
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.
MTM Scientific, Inc Pickup Loop for AM Loop Antenna. The AM Loop Antenna sold by MTM Scientific, Inc is designed to be used with a portable AM radio. The coupling from the antenna to the radio is through the ferrite loop antenna inside most portable AM radios.
Another trick from years ago was to hide the wires behind the crown moulding in the room. I wonder how many people tore apart on old house finding those wires and having no idea why they were there. I have a Radio troubleshooters guide and they give a lot of antenna ideas. In that they showed building your basic long wire like Lizzie describes but doing it in the attic as another option. Provided you have the oldtime storage attic where you won’t get tangled in it.
My dad and I built a long wire on the roof of my parents house. It works excellent and has been up there for years. Also there are kits for tuneable loops that you can buy.
Hook up fm antenna receiver
Using a TRF with tracking BFO was advantageous in keeping the leakage radiation on the antenna to a very low level that prevented enemy direction finding equipment from determining the location of the receiver. Additionally, the low-level of radiation allowed the receiver to operate in the presence of other receiving and transmitting equipment along with radar equipment without interference.
The tracking BFO design utilized a section of the main tuning condenser so the BFO tuning condenser was ganged to the main tuning. Since the new receiver was not a superheterodyne, the BFO had to track at 1kc above the tuned frequency allowing a 1kc heterodyne to be heard thus allowing CW to be readily copied. There were a couple of very good reasons for not designing the new LF receiver as a superheterodyne.
When I searched on “AM radio antenna design”, You are transforming the 4-conductor telephone cable into a loop with 4 turns of wire. 6. If the wires aren’t too long you can hold the loose ends up with one hand while turning the antenna assembly below them. Watch out for kinking.
That is certainly the case with the basic “loop” antenna, an often misunderstood critter, but one that gives absolutely the most for each foot of wire of any antenna I have had occasion to play with. They are long, long, long Who has room for over feet of wire in the case of a full-wavelength loop for meters? Won’t that thing become the perfect conduit right into my house for lightning and other “wrath of God” type things? And will it work on more than one band? I don’t want something that big in my yard if it only gets me a narrow swatch of one band.
First, let me reassure you that such an antenna does not necessarily take much room. One reason I went to one in the first place is because I didn’t have room for a foot-long dipole for and I wanted to give the “top band” a try for the first time in my 45 years of being a ham. If you are talking 75 meters and up if you want a multi-band antenna Yes, it could be a lightning attractor, but you should take precautions with any antennas, including this one.
And, as noted, the skywire loop can be a fine, fine multi-band antenna that actually has impressive gain as you make it bigger or use it on higher and higher frequencies.
Best ways to hook up an fm antenna onto a stereo receiver?
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.
Dec 03, · Radio Shack AM FM Indoor Antenna Model Overview And Installation. Please Click The Link Below For The Owner’s Manual Hosted On My Website. Link To Ow.
The coupling from the antenna to the radio is through the ferrite loop antenna inside most portable AM radios. We have received several inquries about the possibility of conneting the antenna to a regular component receiver. Although every situation is different, it is generally easy to do. The AM Loop Antenna can be connected to most receivers by forming a single turn loop, about 6 inches diameter, using a piece of solid copper wire.
The 2 ends of the loop should be soldered to the bare ends of a flexible coaxial cable. The other ends of the cable should be stripped back and connected to the receiver, as shown. In the photos we show the loop being held at the center of the wooden cross arms using push pins. A more permanent installation can be made by drilling holes and routing the loop before soldering. This arrangement will allow the receiver to tune the signal from the Loop Antenna.
For tuning, first dial-in on the radio to the frequency of the station you wish to receive.
Building an antenna and receiving ham and shortwave stations with SDR
Credit for the bowtie type antenna design goes to the Solid Signal Blog. I don’t claim to have invented these designs, but I see that there aren’t many quick, makeshift antenna tutorials here on instructables, so I just thought I’d try to share their setups. Parts you may need: It should adapt from twin lead to coaxial 2. Two 6 or similar screws.
Connecting an FM/AM antenna. Connect the antenna, tune in to a broadcast and then move the antenna to the location where there is least noise. Then use tape, etc. to fix the antenna in this location. When assembling, refer to “AM loop antenna assembly”. AM loop antenna assembly.
You can get the channel frequencies off the FCC website. Then I make one for them. Try not to OD on Seinfeld! J Lou 1 meter equals Just remove the insulation and straighten it out. I would put all wires, bow ties and the running wires, under the washers as you see in the photographs. Wherever wires touch, they should be bare to get a good electrical connection — EXCEPT where the two running wires cross.
I would wrap a bit of electricians plastic tape around one of the running wires at that point to keep them from touching one another.