Here you'll find links to various transmitter manufacturers and retailers offering transmitting equipment. Care should be exercised with any transmitter that exceeds Part 15 power limits, such as in the case of carrier current applications.
You should consult a qualified engineer regarding installation of AM carrier current or other transmitter where improper installation could result in operation exceeding Part 15 limits.
Care should be exercised with any kit built transmitter.
The Development of the Directional AM Broadcast Antenna
You might wish to check the business practices of the various kit manufacturers prior to spending your cash with them. Carrier current systems utilize power lines as radiators and must be designed for proper operation. It is highly advised that you consult a knowledgeable installer for your carrier current installation to insure both Part 15 compliance and safety of both persons and property.
There are plenty of radio enthusiasts who use these transmitters, from antique radio collectors to those who are fond of vacuum tubes. Please keep in mind this transmitters are manufactured outside the United States and may be subject to regulation or, at the very least, may not be Part 15 certified even though some are advertised as Part 15 compliant.
The following links are to the Federal Communications Commission web site showing the past citation issued to TAW Global regarding this product as well as Richfield Electronics of China, the manufacturer of the transmitter. This is being presented here for historical information purposes.Shown below is my 1 st prototype of an A. Don't laugh!!!
It's resonant, has a 1. The goal was to keep it under 9. Tuning is very touchy and bandwidth is always narrow for such short antennas for. The capacitive "hat" a pie plate was my lazy way of lowering. To be strictly FCC legal you should. Shown Below is my 2 nd prototype with tune-able loading coil. Below is a close up of the tapped loading coil and tuning capacitor arrangement. After getting it all working I weatherproofed the air variable.
Hobby Broadcasting with Low Power Radio. Longwave Broadcasting. PSAs for Download. Simple low power AM transmitter by Christos Z.Msi click bios 5 xmp
Tuning is very touchy and bandwidth is always narrow for such short antennas for 1. The capacitive "hat" a pie plate was my lazy way of lowering the frequency by adding capacitance.
To be strictly FCC legal you should resonate your antenna without the capacitive "hat".There are few truly magical things in this world that are practically free. This DIY AM antenna is best used outdoors but you can make it work inside by somehow re-routing the wires.
It amplifies all weak AM signals, so a powerful local station might be heard over your entire AM radio dial. Form a three inch coil with seven turns. Secure into a round shape with ties or tape. The other end not shown of the coil will go to the ground stake so leave enough wire. The ground stake can be driven into a convenient and safe place nearby. For maximum reception, stretch the antenna wire out perpendicular to the station you want to listen to.
That means if you draw a make-believe line toward the station, you want to lay the antenna wire out 90 degrees to that imaginary line. You can mount the wire at any height, but consider eight feet for safety. Bare the end of the antenna wire I use a knife or diagonal pliers and clip it to the coil. Our antenna did not work on the pipe we used until we sanded the rust away on a small section under the clamp. This is also important to make the ground work.
If you have bone dry soil you may have to dump quite a bit of water on the dirt to make the soil more conductive. Clip the wire to the clamp. Grand Magic Test: Tune your radio to a very weak station.
Move the coil near the radio until you hear the station improve. The coil intensifies the signal which is inductively picked up by the ferrite antenna inside the radio.
Please let us know of your successes or failures so fellow listeners can benefit from your experiences. You can experiment with the diameter of the coil, the number of turns and the length of antenna wire you use. This antenna works great on the AM band because of the properties of these frequencies. Loop antennas can work on other frequencies also but need some modification because of the frequency property differences.
There are probably some discoveries to be made in the future with loop antenna research.Update your browser to view this website correctly. Update my browser now. The advent of the directional antenna made it possible for co-channel stations to operate in close proximity.
AM Radio Antenna – AM Signal Booster
In the early years of AM radio broadcasting, all stations utilized nondirectional antennas. Most all of these were wire antennas suspended between towers or buildings. Interference, especially at night, was severe. As a result, only a few widely-spaced stations could operate on each of the AM broadcast channels in the entire country at night. This limited the number of stations that could coexist to about nationwide, with many of them sharing time on a single frequency.
As antenna technologies were developed and improved in the early s, a few progressive stations began experimenting with multi-element directional arrays.am radio tower power
This approach offered two attractive benefits: 1 It could reduce radiation towards other stations on the same or adjacent frequencies, permitting more stations to share a frequency; and 2 a broadcaster could direct more signal towards the desired coverage area, and away from wasted areas such as open water in the case of coastal stations.
Petersburg, Fla. Petersburg Chamber of Commerce. The two stations shared the frequency of kHz, broadcasting on alternate evenings to promote tourism and business opportunities in their respective communities.
In reality, they operated with two station licenses, but there was only one transmitter and one antenna. This news was distressing to the two chambers of commerce — at those power levels, they would not have the nighttime coverage they needed to promote their communities to the rest of the country. That consulting engineer was T. Craven, a former high-ranking naval communications officer who had resigned his commission in to go into private practice as a radio consulting engineer.
Craven, in turn, called on Dr. Raymond Wilmotte, a British radio engineer who had experimented with radio direction-finding technologies in Europe. Craven encouraged Wilmotte to leave his job and open his own consulting practice.
At first, the owners were skeptical of investing in an untried technology. But Wilmotte was certain it would do the job, and he proposed that he not be paid unless the project was a success. Wilmotte had two base-isolated vertical towers constructed.
Each was feet high, separated by a quarter wavelength on a bearing towards Milwaukee.Skip to main content AM Radio Transmitter. Currently unavailable. I give thumbs up on this am radio transmitter.Laptop power ic problem
It sounded great for any type of music or amazon old time radio player by Amazon online. See All Buying Options.
Purchased by direct phone call from Information Station Specialist. Have had it in continuous operation for about three months now playing my MP3 music collection. Audio quality is good, almost as good as a commercial broadcaster they use thousands of dollars worth of audio processing equipment to get that loud punchy audio to increase power in the sidebands to get more range and better quality of delivered audio.
Audio is good from the bass to the treble range and the AGC makes it easy to get plenty of audio without distorting.
You will need to turn your audio feed down as it is possible to swamp the AGC and get muffled noise out. Range with the supplied wire antenna depends on the frequency you choose to operate. Mine is below I can stream my music from my iphone to my car radio without any problems. Very good product! Also, it surprised me that the shipping came with a little gift.
In Stock. This FM transmitter has worked better than the majority of transmitters I've owned; there's very little feedback, if any, through the speakers so it delivers a crisp and clean sound. I have an older car from and this is a very viable option if you're lacking an auxiliary cable port.
I highly recommend this device especially because it's inexpensive but the price doesn't knock down the quality.
Great product! Add to cart. My only critique about an otherwise amazing device would be the screen size. But I blame that on my mistake.
I damaged my right eye in a lollipop accident and have poor vision. I thought it was an I like to use my phone to listen to podcasts about basket weaving, unicorns and road rage but wanted the ability to do so in my horseless carriage.Just got the mosquito as a gift.
I am very much a. Did you ever get a reply to this question? Did you fashion an antenna for your rig? How did you get on? Thank you very much for your comments. The challenge with a simple short wire antenna is that this kind of antenna can damage the transmitter. This is because the transmitter works best with a 50 Ohm load on the antenna terminal. A simple wire antenna would need to be about feet long to provide a 50 Ohm load at Khz.
That's why we use loading coils or dummy loads. A dummy load is just a 50 ohm load with an antenna connector.
You be able to pick up our transmitter if you are near by but there won't be any significant range. Connect one end of the coil to the transmitter and the other to a 10 to 20 foot wire antenna. It's not that hard and if your transmitter has a good ground connection you'll get great range.
That link to dummy loads shows dummy loads with non - BNC connectors. How does one connect such a dummy load to the Mosquito when the mosquito has a BNC female connector for the antenna?
Post a Comment. Please visit our Amazon Search Page to find low power radio gear!
Email This BlogThis! Newer Post Older Post Home. Subscribe to: Post Comments Atom. Search for AM transmitters on Ebay. Shop Amazon.The antenna instantly and dramatically boosts the AM reception of any portable radio, home stereo receiver or table top radio, by simply placing the antenna near your radio and tuning it, or, with this model, allows you to hard-wire the antenna to your home stereo receiver or table top radio with twin lead attachment.
This AM Antenna enhances reception and adds clarity to the simple antennas that are included with all home stereo receivers and desktop radios. All stations to the side of the antenna are heavily attenuated or suppressed.Surplus rifles k98
This model works with all AM Radios. One of the great things about this antenna is the possibilities available by selective tuning, loop adjustment and radio dialing. Most people think they need a powerful AM Radio, with a special high-end receiver or circuit to increase or boost your reception.
Indeed, this is true, to some extent, but only when it involve. Radio Noise and Sensitivity. However, the antenna inside of a portable radio however is the device which is responsible for picking up the radio station. These internal antennas are usually very small, very weak, and are often forgotten. Most people think that the whip antenna is the device receiving the signal, when in fact has no affect on receiving AM. This remarkable AM Radio antenna, works by combining a capacitor, along with a large air coil, to fine tune to a specific band.
When you slowly rotate to adjust the tuning knob, the capacitor, in conjunction with the air coil, combine to radically boost the signal of the weak station you are trying to listen to. With no wires attached to the portable radio, you just simply tune the knob and BOOM! On most home stereo receivers, there is usually a small loop, or similar type open air coil antenna. These highly inefficient antennas, barely pick-up local stations and the reception is not.
These antennas generally plug into two connections on the back of the receiver or Table-Top radios. Only logged in customers who have purchased this product may leave a review. Our amazing filter modifications, performed by skilled technicians, significantly reduces noise, static and adjacent channel splatter. Using the latest IEEE standard, this adapter is rugged and compact, capable of achieving up to Mbps.
Shortwave coverage is excellent of the whip.
AM Radio Transmitter
The is a great emergency radio for worldwide listening. Excellent quality earbuds, with great audio, retention and soft on the ear.E5 error in ac
These earphones were designed for long term wear, nighttime listening and sound just as good on shortwave and AM radio as they do high quality Rock and Roll. Sturdy housing and right-angle shaft, sits at the perfect angle to not cause tension. Cord will not tangle, and is made out of soft flexible rubber. Will not wrap up or crimp. Audio response is amazing and excellent bass response. This incredible little AM Radio Antenna, drastically boosts the signal strength, reduces noise and improves reception on any portable AM Radio.
No wires, no batteries and no gimmicks, this antenna works miracles. Using World War 1 technology, this AM signal booster, creates a huge radio signal field around the outside of the antenna, substantially improving the reception, decreases static and eliminates noise on any portable receiver near it. Reliable, self-powered Emergency Radio — The Kaito KAL, charges the internal Lithium ion, standard battery off of multiple power sources, including wind-up, solar, DC input, etc.
Makes the perfect gift for your loved ones who live in earthquake, hurricane or tornado prone areas. Easy to use and built-in flashlight make this a great radio to always have on hand in your home, car, RV or boat.
Additional information Weight 1. Reviews There are no reviews yet. Select options. Sale Add to cart. Add to cart. Sale Select options.
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