Portable radio has been and will always be one of the best ways to listen to news and music on the go. You can easily take it along with you anywhere you go to enjoy your favorite radio programs, music, as well as news.
Therefore, one of the best ways to stay connected and gets news update when you are in transit, or during blackout or emergency. Portable radios are sturdy, compact and robust. You can conveniently take them along with you while traveling.
And, there are wide ranges of portable radio brands in the market. As a buyer, you have to buy a high-quality pocket size radio with great sound. Our review of the best pocket size radio will give you the idea of the best brands available in the market.
Some factors that you should consider when choosing the right portable radio are listed as follows:. The powering option is one of the features that you should base your buying decision on; a portable radio that has only a single means of power is not the best option to consider. A receiver with a single power source will not be able to function if you miss that only source of energy.
Therefore, it is advisable to go for a portable source with more than more power sources. Most portable radio comes with a battery and AC power sources. You need to consider the heaviness of a pocket radio before buying it. This factor determines how comfortable and convenient the portable radio will be when taking it from one place to another.
Most times, portable radios are carried in hands, so it is essential to look for one that is lighter to achieve one of its primary purposes which is portability. The speaker of a portable radio plays a crucial role in the quality of sound production.
The quality of audio produced does not depend on the speaker size, but there is a belief that the larger the size of the speaker, the better. Check out the quality of sound emanating from the speaker before buying a pocket-sized radio.
You should also consider the tone of the sound; it must be well balanced. The usage of your portable radio determines how long the battery will last. Apart from the usage, the feature is also a factor that determines the power requirement of a receiver.
Portable radio with a larger speaker tends to drain the battery faster than those with a smaller one. Other features that place much demand on battery power backlight and the LCD screen.
The wide range is also an important feature to consider when buying a portable radio. When a portable radio has a wide range of frequency, users will have access to numerous radio stations.
It weighs 1.FM broadcasting is a method of radio broadcasting using frequency modulation FM. Invented in by American engineer Edwin Armstrongwide-band FM is used worldwide to provide high fidelity sound over broadcast radio. FM broadcasting is capable of higher fidelity—that is, more accurate reproduction of the original program sound—than other broadcasting technologies, such as AM broadcasting.
Therefore, FM is used for most broadcasts of music or general audio in the audio spectrum. FM radio stations use the very high frequency range of radio frequencies. Usually In most of South Koreathe Americasthe Philippines and the Caribbeanonly odd multiples are used. Some other countries follow this plan because of the import of vehicles, principally from the United States, with radios that can only tune to these frequencies.
In some parts of EuropeGreenland and Africaonly even multiples are used. In the UK odd or even are used. The ITU publishes Protection Ratio graphs which give the minimum spacing between frequencies based on their relative strengths. Frequency modulation or FM is a form of modulation which conveys information by varying the frequency of a carrier wave ; the older amplitude modulation or AM varies the amplitude of the carrier, with its frequency remaining constant.
With FM, frequency deviation from the assigned carrier frequency at any instant is directly proportional to the amplitude of the input signal, determining the instantaneous frequency of the transmitted signal.
The maximum frequency deviation of the carrier is usually specified and regulated by the licensing authorities in each country.
Analog AM/FM Portable Radio
Random noise has a triangular spectral distribution in an FM system, with the effect that noise occurs predominantly at the highest audio frequencies within the baseband. This can be offset, to a limited extent, by boosting the high frequencies before transmission and reducing them by a corresponding amount in the receiver.
Reducing the high audio frequencies in the receiver also reduces the high-frequency noise. These processes of boosting and then reducing certain frequencies are known as pre-emphasis and de-emphasisrespectively.
The amount of pre-emphasis and de-emphasis used is defined by the time constant of a simple RC filter circuit. For stereo, pre-emphasis is applied to the left and right channels before multiplexing. The use of pre-emphasis becomes a problem because of the fact that many forms of contemporary music contain more high-frequency energy than the musical styles which prevailed at the birth of FM broadcasting. Pre-emphasizing these high-frequency sounds would cause excessive deviation of the FM carrier.
Modulation control limiter devices are used to prevent this. Systems more modern than FM broadcasting tend to use either programme-dependent variable pre-emphasis; e.
Pre-emphasis and de-emphasis was used in the earliest days of FM broadcasting. Long before FM stereo transmission was considered, FM multiplexing of other types of audio level information was experimented with.
These FM multiplex transmissions started in November and consisted of the main channel audio program and three subcarriers : a fax program, a synchronizing signal for the fax program and a telegraph "order" channel.
These original FM multiplex subcarriers were amplitude modulated. Two musical programs, consisting of both the Red and Blue Network program feeds of the NBC Radio Network, were simultaneously transmitted using the same system of subcarrier modulation as part of a studio-to-transmitter link system.
These transmissions consisted of two-channel audio programs, binaural audio programs and a fax program. The individual systems were evaluated for their strengths and weaknesses during field tests in Uniontown, Pennsylvaniausing KDKA-FM in Pittsburgh as the originating station.
The Halstead system was rejected due to lack of high frequency stereo separation and reduction in the main channel signal-to-noise ratio. The GE and Zenith systems, so similar that they were considered theoretically identical, were formally approved by the FCC in April as the standard stereo FM broadcasting method in the United States and later adopted by most other countries. A stereo receiver will add the difference signal to the sum signal to recover the left channel, and subtract the difference signal from the sum to recover the right channel.
25 Best Portable Radio Reviews 2020 (Pocket AM/FM Radios)
The 15 kHz upper limit for the baseband audio is necessary to allow protection of the 19 kHz pilot signal using low-pass filters. This composite signal, along with any other sub-carriers, modulates the FM transmitter.
The terms compositemultiplex and even MPX are used interchangeably to describe this signal.Last updated: Oct 9, 8. After comparing ten of the best tabletop radios available on the market today, we found the Bose Wave SoundTouch to be the top choice for most homes. We have spent 14 hours researching, testing and collecting customer feedback from all over the internet to bring you this unbiased tabletop radio review and help you make the right purchase decision.
In this top 10 review article, we will be comparing tabletop radios on their most important characteristics such as audio performance, aesthetics, feature set and radio bands they support.
Overall, there are multiple great radios for home available on the market and the one that is most suited for your needs depends on factors that are important to you, so keep reading to discover the best tabletop radio for you.
Best tabletop radio overall. Great sound, modern looks and access to over 30, radio stations over the internet. A best selling mid-range table-top internet radio on Amazon. High-fidelity sound coupled with one-touch streaming in a gorgeous hand-crafted wood cabinet.
Mid-century design meets latest tech in audio development. Solid build quality, compact size, warm and room filling sound. It delivers a quality balanced sound and allows Bluetooth streaming from your phone. A unique two standalone speakers design for a true stereo experience.
Powerful, bass enhanced sound beyond its size and Bluetooth support. It can also charge your phone or tablet. Small, simple and extremely affordable tabletop internet radio with access to over 26, radio stations and Bluetooth streaming. Best Premium — Revo SuperConnect. One of the most acclaimed digital tabletop radios ever made. Next generation offers, premium build, high fidelity sound with rich bass.
Acoustically tuned wooden cabinet looks great and help to deliver richer sound. Classic analog controls give it a nice retro touch and close to perfect tactile feel. Bose is renowned for beautiful designs and Wave SoundTouch continues this longstanding tradition. The unit has a sleek, modern design that would look good anywhere in your home.
There are two parts to the unit, the actual speaker and the receiver. The speaker sits at the top, yet is not physically connected to the base. One of the highlights of the device is the touch-screen LED panel.
The information display on the panel is very clear and shows station details when in radio mode. With the built-in Bluetooth, you can easily pair your smartphone, tablet, or computer to stream music, podcasts, or any other type of audio. There is also the Wave SoundTouch app that enables you to connect the device to your home wireless network. The app lets you control music selections through apps such as Spotify and Amazon Music and also can access thousands of stations on the internet. We found that using the app is the easiest to control the radio.
In addition, you can download the Alexa app and have any Alexa-ready dice, such as Amazon Echo, to control your radio. Sometimes it can be hard to choose the most impressive feature, but the audio quality of this Bose radio stands out more than anything else. It produces a clean, rich, room-filling sound through the use of Bose Wave Guide Technology.
Air gets pushed through the speakers in all different directions, which makes it sound like a big stereo system without having a huge amplifier and loudspeakers. Bose sound signature is known for being bass-heavy, and this radio is no different. Some of the wireless streaming features also require a strong and reliable internet connection.Sony ICF F10 Analog AM FM radio receiver look and review
Bose Wave SoundTouch is one of the best sounding tabletop radios on the market. The device can be used in two different ways.Like Tweet. Jan Vigne. I've attached a 60 foot long-wire antenna to a nearby tree for AM reception and enjoy searching for distant AM stations late at night my record is Nashville, TN from western MA.
The only experience I've had with digital tuning is on my car radio where tuning is in 10 kHz increments set by the radio itself; there is no ability to fine tune a weaker station as with an analog tuner.
I realize that AM stations broadcast at 10 kHz intervals, but because of atmospheric conditions, the best reception can sometimes be received slightly off the broadcast frequency. This is where fine tuning becomes important at least for faint stations. I'd be interested in upgrading to a nice digital tuner but am concerned about the ability to fine tune a faint station.
It seems with a digital tuner, if you don't 'get it' at the 10 kHz interval, you won't receive it at all. Am I correct that there is no way to 'scroll' between the 10 kHz intervals with a digital tuner as one can with an analog tuner, or is the reception of faint stations with a digital tuner more dependent on the quality of the external antenna than the tuner?
Thanks for any reply. De-tuning with an analog tuner is most often a matter of the vagaries of an analog tuner. You should notice a "log scale" on your tuner's face.
It is used to mark more precise points for tuning that are not related to the more conventional "", "" or "" marks on the tuner glass. If you are unfamiliar with the operation of an analog tuner, open the top of your receiver and look at the mechanism that moves the tuning dial.
Not exactly a precision piece of equipment nor is it a highly reliable component over time. As you have noted, atmospheric conditions play into long distance reception. AM radio waves however are quite long and tend to wrap around the curvature of the Earth. Cloud cover however can cause spurious reflections that will overcome the ability of an analog tuner to discriminate between the actual signal and the reflected signal, somewhat similar to what is called "multipath" in an FM tuner.
Detuning can sometimes select between the two incoming signals and allow the user to select the stronger of the two, though background noise levels will tend to increase in such a situation. Changes in the location and position of your wire antenna might make a difference.
The problem with that approach is, you tend to play a game of whack-a-mole with stations where this location is best for this bandwidth on your tuner and that location for that bandwidth on your tuner.Shortwave radio technology has been around for over 70 years. Before the Internet age, shortwave radios have enabled listening to news and events around the world. It gave people access to broadcast programs in real-time and in a large number of languages.
Today, these radios are still a useful and enjoyable means of keeping in touch with world events. Shortwave radio technology has evolved and advanced with the making of digital-era models. If you are interested in purchasing a one, there is quite a number of models on the market. Among these are gathered 10 of the best shortwave radios.
Wondering which is the best shortwave radio to buy? One of the aspects that makes the Sangean model stand out is its 5 tuning methods. These include auto scan, manual tuning, direct frequency tuning, rotary tuning and memory recall. With product dimensions of 8. But this may not be compact enough to fit into every back pockets. In addition, its speaker will allow you to listen to sounds in good quality and without interference. So you will have many entertainment options available for jogging or going for a walk.
It has an alphanumeric memory system that lets you have access to up to preset stations. You have spaces for shortwave, 27 for AM, 18 spaces for AM, 9 for longwave and 1 priority. The package comes with features and accessories such as an in-built battery charger, headphone amplifier, and an indicator for battery strength and signal. It also comes with a leather carrying case and allows AC adapter switching.
It has an alarm and buzzing system. In addition, the time of 42 world cities are built into the radio. Check Price on Amazon. This model is a portable travel shortwave receiver. Having an alarm and clock, this model comes in comfortable dimensions of 4.
It weighs grams, so you can easily keep it in a back pocket. In addition, it has an ergonomic handle. Therefore, you can carry the digital portable radio while you walk with greater comfort.
Some buyers indicate that this option could be the best portable radio since it has earbuds and a volume knob that can be rotated. Hence, it can offer both information and entertainment functions. Additionally, this product can read strong FM radio waves.
It comes with preset memories for easy access. It also has a screen to help you identify radio stations and features, and the remaining battery charge. It is backed by a full 1-year warranty.Automotive Infotainment and Telematics Minimize menu. After the merger of the two companies inST continued to be the main radio IC supplier of SiriusXM, which counts now over 30 million service subscribers. ST is very proud to have contributed to the most successful story in the Digital Radio market developing seven generations of radio ICs based on state-of-art CMOS technology to deliver features of increasing complexity with continuous improvement in power performance.
For any questions about satellite radio solutions, please contact ST sales offices. Terrestrial radio receivers. Our multi-band audio receivers reduce system components count and cost, while ensuring best-in-class radio signal reception.
Select a radio receiver or get in touch with our sales office for custom design requests. This browser is out of date and not supported by st. As a result, you may be unable to access certain features. Consider that modern browsers:. So why not taking the opportunity to update your browser and see this site correctly?
You can re-use the validation code to subscribe to another product or application. Save to myST. Product selector. CAD Resources. Get Started. All resource types Minify. Flyers and Brochures Flyer 1. Flyer 1. All resource types.It also allows stations to add more programming via several additional channels that can be broadcast "alongside" a station's main frequency. Stations often use these subchannels to provide traffic or weather information, or diverse music content.
And just as with AM and FM, once you have a compatible radio, there is no subscription fee for the service. There are more than, 2, HD Radio stations across the U. Still, HD Radio is only in its infancy. Unlike digital TV, HD Radio broadcasts won't replace analog broadcasts at least not in the near future but will run parallel to them.
Stations supporting HD Radio simultaneously broadcast analog and digital versions of the same programming over the same frequency. With a regular radio, you'll hear the usual analog version.
With a HD-compatible radio, the radio tunes in to the digital programming on HD stations and the analog signals for non-HD stations. If a HD Radio signal becomes too weak, the radio will automatically switch over to the parallel analog signal. In our tests, HD Radio can live up to its promise of improved sound.
The HD Radio sound quality delivers deeper bass, higher treble, more stereo separation, and a greater dynamic range the difference between the loudest and quietest sounds than FM or AM signals.
Moreover, the HD signal from AM stations is in stereo, and there is no background noise—the hiss or crackle you occasionally hear with standard radio. Many of the stations that have converted to HD radio in the United States have added a second and some even a third subchannel with different programming than the stations' main frequency.
You tune in the subchannels with a tap of a toggle or a turn of the tuning knob; they appear in the display with a designation such as FM2. A station can have up to eight subchannels and they typically carry programming of a different music genre than the main channel.
The primary station might be adult contemporary, for example, while a subchannel might offer gospel or country to broaden the station's appeal. For a full list of HD Radio stations and their formats, visit www. Still, don't expect anywhere near the variety you get with satellite radio. HD Radio stations often carry no commercials on subchannels, but the main channels carry the usual commercials.
As with satellite radio, HD Radio stations can show you the song title, artist, and other data on a display. Some stations also use the display to provide local traffic, weather, stock prices, news alerts, and more. In the future, using technology to identify specific receivers, a vehicle could receive designated signals, whether additional audio channels concerts or extra sports channels, for example or specialized services, like "closed-caption" text for the hearing impaired.
Such services would be broadcast by a station along with its main channels. Some HD stations enable "tagging," which lets you flag a song for later purchase through iTunes. This requires an iPod with a dock and a radio with tagging capability. With some, however, we received the analog signal but not the digital one.