The IC-F27SR: A PMR 445 Licence Free Radio

Some of the trained writers on the web are at such a top level that i wonder if any of them have ever printed a book? well now and then i like to focus on these brilliant items and here is one i found remarkable the other day.

Professional PMR446 Licence Free Two Way Radio

The IC-F27SR professional Licence Free Two Way Radio is the successor to the best selling IC-F25SR and retains the simplicity, functionality and build that made the original so popular. However, there have been some big improvements including a smaller and lighter body, 800mW loud and intelligible audio, built-in VOX function and several new scanning and security features. To top it off, the IC-F27SR includes highly efficient circuitry that provides up to a massive 35.5 hours of operating time with the supplied BP-265 2000mAh Lithium-Ion battery pack.

High performance, Professional Licence Free Radio 
Outstanding audio quality, high performance and strong commercial build make the IC-F27SR the ideal licence free radio. This licence free radio is ideal for users in diverse areas such as construction, catering, event management, shopping centres, factories, farms as well as serious outdoor enthusiasts.

Up to 35.5 hours of operating time
The IC-F27SR features highly efficient circuitry, providing up to a massive 35.5 hours of operating time* with the supplied BP-265 2000mAh lithium-ion battery pack. This means it can be comfortably last an entire shift.
* Tx: Rx: Stand-by =5: 5: 90 with power save ON. 24.8 hours with BP-264

Outstanding audio quality 
800mW audio output is provided from the large 45mm speaker meaning the IC-F27SR can deliver loud and intelligible audio even in extremely noisy environments such as a busy shop floor or construction site.

Just three main controls
Transmit button, volume control and channel selector. This simple to use radio is ideal for high turnover environments and shift work where the radio is constantly passed from person to person.

Lightweight, Compact Body
Small size (58×186×36.5mm) and lightweight (285g) makes this transceiver ideal for all users.

Commercial grade construction
The IC-F27SR is extremely rugged. It has been tested to 11 categories of environmental and military standards for dust protection and water resistance making it suited to outdoor use.

Internal VOX for Hands-free operation
Built-in VOX function provides convenient hands-free operation, when used with our optional headset adapter cable.

500mW output power 
Provides wider communication coverage.

Other features 
• CTCSS and DTCS encoder and decoder for group call
• Surveillance function turns off the LED and beep sound
• Siren function can be used for security alarm
• Power save function
• Low battery alert
• Time out timer
• Monitor function

  • High performance, Professional Licence Free Radio
  • Up to 35.5 hours of operating time with BP-265 Li-ion battery pack *Typical operation with power save on. TX:RX:Stand-by=5:5:90
  • Outstanding audio quality
  • Simple to operate, just three main controls
  • Lightweight, compact body
  • Internal VOX for hands-free operation (Optional headset and adapter cable required)
  • IP54 and MIL-STD-810 ruggedness
  • CTCSS and DTCS tone squelch for group call
  • Same accessories as “F3002/F4002” series handhelds
  • 2 year warranty on transceiver, 1 year warranty on accessories

Radio Communication with First Responders Pending at Lenape Tech

Boy. The brand new Walkie talkie is incredible. I mean it is just so gorgeous and so sophisticated. I pity those who grew up without the Walkie talkie.

Two-way radio communication at a local technical school would greatly improve school security, according to one local official.

Lenape Technical School Special Programs Coordinator Carla Thimons further explained the need for such during discussion on the Manor Township school’s $18,000 Pennsylvania Department of Education Safe School Initiative Competitive Targeted Grant award.

“These will truly help us feel better about safety overall, because communication is key,” Thimons said.

She said several programs at the technical school provide a unique challenge where areas of the building would not be able to listen to announcements over the public address system, and the radios would provide necessary internal communication with teachers and staff.

Thimons said the grant funds were accepted by the Joint Operating Committee last month, and funding received, but the radios have not been purchased yet. She explained officials want to coordinate efforts with the Armstrong County Department of Public Safety to ensure that communication will be loud-and-clear.

“We want to determine the best purchase,” Thimons said. “We have an idea in mind what we want, but we want to coordinate with (the Department of Public Safety.)”

Radios are to be expected to be carried in the school hallways by officials by the start of the 2014-15 school year.

Thimons, who has been Special Programs Coordinator for 10 years and was previously the technical school’s principal, coordinates special education, grant writing and safety procedures at the school.

Besides the two-way radios, Thimons said school officials are planning to hold school wide drills, including a mass-evacuation drill.

Joint Operating Committee members also unanimously approved the hire of Night Watchman Samantha Walker, retroactive to March 7.

Principal Karen Brock last month said the school used to have night watchmen, but another one needed to be hired to replace that individual.

Armstrong School District also received Safe School Initiative Competitive Targeted Grant funding in the amount of $25,000, and put the money toward the purchase of new and updated security cameras “as another layer of security throughout the district,” according to School Superintendent Stan Chapp in March.
Director of Technology and Information Services Anthony Grenda said about 16 surveillance cameras will be added to the interior and exterior of Elderton and Shannock Valley Elementary Schools. He hopes those cameras are installed by the end of the current school year. Several have already been installed, he said earlier this week.
Apollo-Ridge and Leechburg Area School Districts also received $25,000 in grant funds.
Earlier this year, Armstrong also received $40,000 in the state’s Safe Schools Grant Program for utilization of a school police officer. Those officers have also been already utilized throughout the district.
The Lenape Tech Joint Operating Committee meets again Thursday evening, beginning with a 6:30PM public budget session at the school.

Source – http://www.kittanningpaper.com/2014/04/16/radio-communication-with-first-responders-pending-at-lenape-tech/44954

 

Scottish Spaceport Plans Announced

Scotland is being considered as the site of the UK’s first-ever spaceport, which could be here as early as 2018, it was reported this week.

The spaceport would be the first one ever built outside of the US.

What’s more, Scotland are definitely the odds-on favourite to be granted this prestigious (not to mention historic) prize, as eight UK aerodromes have been short listed as possibilities and six of them are located in Scotland. 

It is thought that the spaceport would not only increase the country’s revenue by providing a site for satellite launches, but also through tourism, with ‘space tourism’ expected to increase in the next few decades.

Chief Secretary to The Treasury Danny Alexander (who was born in Edinborough), told BBC News, “I am delighted that the government is pushing forward with its ambitious plans to open a spaceport in the UK by 2018. Spaceports will be key to us opening up the final frontier of commercial space travel (…) Scotland has a proud association with space exploration. We celebrated Neil Armstrong’s Scottish ancestry when he became the first man on the Moon and only last week an amazing Scottish company was responsible for building the UK Space Agency’s first satellite (…) The UK space industry is one of our great success stories and I am sure there will be a role for Scotland to play in the future.”

UKube-1, a satellite designed and built by Glasgow-based firm Clyde Space, was launched earlier this week. It was the first ever spacecraft to be fully assembled in Scotland, but it may turn out to be the first of many.

According to the BBC, UK profits from the space industry are now exceeding £11bn a year and it provides employment for some 34,000 people. It is also a significant growth industry, with employment figures rising by 9% since 2011.

The recent interest in the development of UK-based, but more specifically Scottish, space exploration technologies has also become linked to the current debate over Scottish independence, with the Scottish government suggesting that a vote for independence on September 18th would only strengthen the space initiative.

A spokeswoman said, “Scotland is proving that it has the expertise to attract and support such a specialized, global industry, and as such an independent Scotland will be an attractive option for spaceport pioneers.”

However, it seems probable that the plans for a Scottish-based spaceport will go ahead either way, whether Scotland is declared an independent nation or not. In addition, doubts about the potential strength of an independent Scotland’s economy may also act to the detriment of its space research.

As with all things, time will tell…

SOURCES

http://www.bbc.co.uk/news/uk-scotland-scotland-politics-28276525

Who Uses a Spy Earpiece?

British comedian Jack Dee probably said it best, “Men like to use drills because secretly, we think they’re guns”. Tools just bring out our inner 007.

He’s right. Men like gadgets for the same reason. We can’t deny it, there’s just something unassailably cool about a tool that you can use, but that no one else knows about.

Whether you’re prancing around your house pointing a Black & Decker at imaginary henchmen, or fondly imagining that your fountain pen doubles as some sort of deadly offensive weapon, its OK to admit that you like the idea of gadgets.

If you’re reading this and nodding, then you are almost certainly a man (or else, a bit of a Tomboy, which is fine too). In which case, you probably found this article whilst searching for a ‘spy earpiece’ online. Ergo, the sort of person who buys this is, well, someone just like you.

If, however, you clicked this page because you want to know what sort of person uses such a device (or indeed, what, if any, its practical applications are), then you’ve come to the right place, ma’am.

Its not all James Bond wannabes, you know.

Teaching professionals cunningly utilize spy earpieces to receive information in real time as they go through vast amounts of information in front of a class. They also employ such gadgets when giving lengthy and complex presentations to superiors or potential students. This goes double (or even triple) for public speakers.

Amazingly, the time spent preparing a reliable body of information and then having an accomplice drip feed the correct answers to you via the earpiece would probably be better spent actually learning the material in the first place. However, you can also use spy earpieces in presentations in much the same way that businesspeople do.

Security personnel will also use spy earpieces, as surprising as that may be to read. Often, the security professional is used as a deterrent; large, imposing men and women are geared up with walkie-talkies and sharp suits or black uniforms in order to encourage would-be troublemakers to think twice. However, it is also common for security guards to operate in plain clothes, keeping an eye on potential situations discreetly and quietly. For this, they use a spy earpiece. For the same reasons, even undercover police have been known to employ spy earpieces.

So, the earpiece appeals to more than just the gadget-crazed would-be 007. Spy earpieces are used by a broad cross-section of the community, not just by men with a little too much time on their hands!

Finding a Spy earpiece can be a difficult task, the website EarpieceOnline.co.uk is one of the best places to get one.

Where Do We Get The Word ‘Earpiece’ From?

The word ‘earpiece’ is obviously a joining of the words ‘ear’ and ‘piece’, the term was probably originally coined for eyeglasses at some point in the 18th century, but it also applies to things like old style phone receivers and doctor’s stethoscopes.

British optician Edward Scarlett is thought to have developed the first eyeglass earpieces sometime before 1727. However, this invention didn’t catch on until the early 19th century, so it is probable that the word ‘earpiece’ fell into popular use around that time.

For comparison, American inventor Nathaniel Baldwin built the first radio headphone set in 1919, almost a hundred years later. The basics of earpiece design have existed since that time, so the word ‘earpiece’ was almost certainly used at that point, although it would not have denoted the same device that we now think of today.

Bluetooth headsets, colloquially referred to as ‘earpieces’, were first made commercially available in the early 2000’s and since that time, the term has proliferated. By and large, in the 2010’s, the word ‘earpiece’ tends to refer less to headphones and earphones (although it is still technically accurate terminology) and increasingly solely denotes Bluetooth headsets.

As for the word itself, the word ‘ear’ is actually a derivation of the old English word ēare. It is derived from the same root word as the Norse word eyra and is also cognate with the German word ohr and the Latin auris.

The word ‘piece’ has been in use as far back as the 11th Century AD and comes from the Old French word pece (which is itself of ancient Gaulish origin). It probably also has linguistic ties to the ancient Welsh word peth (meaning ‘thing’).

In the future, it is likely that the word ‘earpiece’ will continue to refer to wearable technology until such time as the word exclusively denotes a wearable device. However, this is purely conjecture on our part.

The other uses for the word will likely remain standard English that simply isn’t used on a daily basis. An example of this would be words like ‘Sellotape’, ‘Tannoy’ and ‘Hoover’, all of which are brand names that do not denote the actual object in question. Correctly, a Hoover is a vacuum cleaner, a Tannoy is a public address system and Sellotape is sticky back plastic. However, almost nobody uses those terms anymore in a casual setting (Alan Partridge and the odd Blue Peter Presenter notwithstanding). 

Motorola Solutions Adds RFID-Enabled Knobs to Radios

Thankyou for reading my website, here’s a piece i actually loved reading. With their permission i’m able to repost it. I write tons of my own content pieces, but sporadically post other content i find fascinating, thankyou for reading.

The volume knob, which can be retrofitted into the company’s Mototrbo two-way radios, enables users to conduct inventory counts of 50 radios in six seconds, instead of four minutes.

Two of Motorola Solutions‘ business divisions combined forces this year to develop an RFID-based solution known as RFID Fleet Management, for managing the locations of its Mototrbo two-way radios. The system features a volume-control knob with a built-in RFID tag, enabling users to locate radios more efficiently than having to manually search through several models, reading serial numbers or scanning bar codes. The solution also includes Motorola EPC Gen 2 ultrahigh-frequency (UHFRFID readers. Software to manage read data, as well as training, support and service, are being provided by Motorola’s reseller and solution-provider partners. Beginning at the end of this month, the new knobs will be shipped to customers, upon request, as a retrofit for their existing radios.

Motorola Solutions sells its Mototrbo two-way radios to customers, such as product manufacturers, and other companies with mobile personnel. Motorola Solutions’ Mototrbo customers include organizations that rent the radios to the end users. Both types of companies can have inventories of hundreds or thousands of radios, which must be accounted for periodically—at the end of each day, weekly or monthly, for example—to confirm that the radios have not gone missing, and that every user returns the correct units. Without RFID, each radio assigned or rented out must have its bar code scanned or its serial number recorded in order to create a record of which radio was provided to which employee or company, and when this occurred.

With the RFID Fleet Management solution, the radio’s original volume control knob (left) is replaced with an RFID-tagged version (right).

According to Carrie Angelico, Motorola Solutions’ senior channel business development manager for data-capture solutions, Mototrbo users told Motorola how exhaustive the inventory-management process could be, and the company’s radio division began discussing a solution with its own RFID division. The result is a volume-control knob containing a Motorola UHF RFID Custom Tag, made with an Omni-ID tag, encoded with a unique ID number that can be associated with the radio’s own serial number in the user’s software.

The solution is designed to be a retrofit option for those with Mototrbo two-way radios. Users first acquire the RFID-enabled knob as a replacement for the existing volume knob. The knob’s built-in RFID tag can then be read via any of Motorola Solutions’ handheld or fixed readers, including a desktop interrogator that could be used for checking radios into and out of a storage area.

- See more at: http://www.rfidjournal.com/articles/view?11706#sthash.xhADvZzf.dpuf

DMR Tier III: the open standard for radio communications

The basis of the post is to make you consider what in life is significant and what does getting the new Two way Radio really represent to people

Private mobile radio is fast becoming an essential communications solution to support the operational needs of utilities companies, airports, oil and gas pipelines and emergency services.

When compared to public cellular services, it delivers improved coverage, reliability and resistance, contention, security, group communications and performance.

The digital landscape is crowded, though, with a number of public safety digital standards such as TETRA, P25 as well as low cost digital solutions including DMR (Digital Mobile Radio), dPMR (digital Private Mobile Radio), NXDN and PDT (Professional Digital Trunking).

DMR is coming out on top thanks to the open standard nature of DMR Tier III trunking, which is driving its emergence, ongoing development and adoption across global markets.

But do open standards matter? While open standards are less important in the small system market, they are critical to the long-term case for the radio system in the medium to large systems sector, and it is here that open standard DMR Tier III will dominate.

Essentially, DMR Tier III trunking features a control channel on each radio site and allocates traffic channels on demand making it frequency efficient and enabling a large number of users to share a relatively small number of channels. Radio sites can easily be inter-connected, usually using IP connections, making it possible to deploy systems ranging from a single site to hundreds of sites spread over a large geographical area.

The open standard way

The DMR standard includes the facility for implementers to provide ‘manufacturer extensions’, enabling manufacturers to provide proprietary features within the framework of the DMR air interface definition. This allows them to complement the standard set of DMR call functions with their specific facilities.

This has the advantage of enabling customers to request specific functionalities to support the manufacturer’s business operation needs and also enables them to provide innovative features that differentiate their solutions from others implementing the same standard.

One disadvantage to this offering is that interoperability can only be possible for those features that are fully defined by the standard and that customers using manufacturer extensions are effectively locked in to a single manufacturer solution rather than enjoying the vendor choice that a standard enables.

To address the pros and cons, the DMR Association (DMRA) has struck a balance between robustness and cost with their interoperability process, which focuses on testing the conformance of products against the published standard that describes the over-air signalling. The DMRA facilitates testing between a terminal manufacturer and an infrastructure manufacturer, and the two parties carry out the testing against a standard test specification. Test results and logs of all messages sent over air are recorded during the testing and then are inspected by one or more independent third parties during a detailed review meeting. Only after the independent third parties are satisfied that the equipment under test has conformed to the open standard specification is an interoperability certificate issued.

Ongoing standards development

Whilst this facility can be useful, extensive use of manufacturer extensions would call into question whether DMR was a standard that delivers interoperability (and therefore vendor choice) or whether it results in proprietary solutions rather than following an open standard.

The answer to this lies in the work of the DMR Association. The DMRA has a technical working group – made up of competing manufacturers – who collaborate to ensure the standard succeeds. Any proprietary features from the manufacturers, which are believed to have wide market appeal or have useful features the standard doesn’t yet specify, are debated in the group. They are then developed to further advance the standard to the benefit all of the manufacturers and indeed the customers who choose to implement DMR technology.

The DMRA is further developing the standard to meet future market demands by identifying important new features and ensuring these are developed and included in new releases of the ETSI standards.

The future of DMR Tier III

Open standards are critical to providing long-term support and stability to customers. The adoption of the standard by a critical mass ensures its longevity over other similar competing technologies that have lower levels of support by offering the market vendor choice and maintaining low costs.

Is DMR Tier III radio communications’ open standard for the future? Yes. Due to DMRA’s authority, the robust and well-supported interoperability programme and the long-term commitment of a large number of manufacturers, it is emerging as the most successful low cost digital technology for complex projects – and therefore the open standard that no other private mobile radios can contend with.

Source – http://www.telecomstechnews.com/news/2014/apr/25/dmr-tier-iii-open-standard-radio-communications/

Icom Radio Earpiece: Technology at its Best|Where to get a Icom Radio Earpiece}

We’re residing in a world that revolves around technology’s latest innovations. Communication forms the backbone of every business in the world. Global operations function effectively on quality based communication systems. Discrete communication systems are setup for the purpose of sending, receiving and regulating information to the right destination. If you wish to ensure steady communication between recipients, secure and effective equipments must be utilized. Of this, the two way radio is a popular tool in demand. If you’re an avid user of the two way radio, then combining this technology with the Icom radio earpiece brings about effective communication. 

Benefits of Icom Radio Earpiece

The earpiece technology comes alongside a microphone that allows you to convey information across. The Icom radio earpiece is comfortable and doesn’t expose the two way radio during usage. While keeping the radio attached to your belt, the earpiece easily conveys sound waves as input and excellent output. Now imagine having a radio that is almost portable and doesn’t risk the chance of being dropped or exposed to environmental hazards? Extend the usage and life span of your radio by using Icom radio earpiece that has become a popular choice today. The earpiece can be easily accommodated inside the clothing for its small size and lightweight. Four distinct kinds of two way radios have been presented that occupy four types of Icom earpiece connectors. 

The available Icom radio earpiece connectors have a sleek design that performs tasks while using two way radios. The earpiece has been configured particularly for certain task however it can easily be compatible with a number of other features. It is important to check if the Icom radio earpiece is compatible with the type you own. The radio earpieces offer quick communication with instant connectivity. A good example is when you have a straight pin connector that functions well with marine radios. If such a connector is used for domestic radios, the audio quality can differ greatly. 

Every radio purchased is unique and is meant for transmitting information in distinct environments. Hence while choosing the kind of earpiece you want, there are certain assets considered before purchasing. The Icom radio earpiece offers optimum level of consistency and performance based, it is the best. The earpieces improve sound quality in environments like fleet and transport, healthcare, real estate, security, shipping etc. Icom has ensured that its particular edition of two way radio earpieces performs certain tasks. 

Features of Icom Radio Earpiece

Besides having excellent compatibility with two way radios, the brand composes the earpiece from high quality cables with durable surface. Such material protects the cable from wear and tear and offers a decent strain relief. Icom radio earpieces are lightweight yet are protected from damage in worst case scenarios. You wouldn’t want to lose connection while using the radio however the Icom earpieces have excellent connectivity. 

The earpieces can easily withstand consistent collisions and will continue working despite undergoing strain. They have the capacity to work reliably in every condition. This particular radio earpiece is different because it has a tough framework. Unlike other weak cables that get damaged after withstanding massive strain, Icom makes a massive difference. 

The earpieces have been designed in such a manner that they care encased inside your ear canal consisting of a microphone that is composed of high impact polycarbonate. This ensures that communication is uninterrupted and noise proof. The acoustic tube can be easily replaced and removed if it gets damaged. The button or controller that allows one to communicate is placed in your hand than on the collar. Knowing its capabilities, security companies have begun utilizing this gadget for its hi-tech features comfort. 

Conclusion

It comes with a smart three wire design having separate connections with the microphone and the main control system (push to talk button) ensures that your conversations are instantly connected. Any kind of interference caused by external agents is eliminated making the gadget absolutely noise proof. Enjoy connecting with clients, colleagues while coordinating events and communicating with your loved ones. The Icom radio earpiece is a modern invention that has surpassed expectations in the world of communication. For two way radios, the Icom earpiece technology has been claimed as one of the best communication tools of the world. The durability and snug fitting makes it the ideal earpiece for ensuring prolonged communication. 

What Is Covert Surveillance?

With very little information on the internet about earpiece’s, it is very rare when we get a chance to re post, with permission, an article from this industry.

Covert surveillance occurs when someone or something is being observed without knowledge. People who are under surveillance are most often under suspicion. Locations and buildings are primarily observed because of suspicious activity or to obtain information about a suspect.

covert surveillance Covert surveillance is generally performed by government agencies, private investigators or business owners. Intelligence organizations such as the Central Intelligence Agency (CIA) of the United States and the United Kingdom’s Secret Intelligence Service, also called MI6, participate in surveillance to obtain information for national security interests such as counter terrorism. Law enforcement agencies such as the United States’ Federal Bureau of Investigation (FBI) or the International Criminal Police Organization (INTERPOL) also perform surveillance. They concentrate on observing suspected criminals.

Private investigators perform covert surveillance for a variety of reasons. Husbands and wives hire private investigators to prove or disprove suspected infidelity. Businesses hire private investigators to observe employees who are suspected of fraudulent activities or former employees that may be breaking confidentiality agreements. Insurance companies are notorious for using private investigators to put claimants under surveillance to ensure they are not submitting a fraudulent claim.

Many business owners participate in covert surveillance of their employees and customers. Observing employees while they are working gives business owners valuable information, such as employee production and employee theft. Covertly observing customers can aid in marketing and research efforts and most importantly account for loss due to theft in retail businesses. Retail businesses can also use information obtained through covert surveillance to prosecute shoplifters.

A surveillance operation may be carried out in a number of ways. Agency employees and private investigators may choose to observe a subject without the aid of sophisticated technology, using things such as binoculars and cameras. However, in an age of modern technological conveniences, it is safer, cheaper and more convenient to use surveillance equipment.

Closed circuit television systems (CCTV) are one of the most popular ways to carry out covert surveillance. Cameras come in all sizes and can be placed inconspicuously almost anywhere. In order to obtain audio, wire taps can be placed on phones or audio surveillance equipment may be hidden in a suspect’s office, home or vehicle. Other ways to perform covert surveillance include aerial surveillance and the use of global positioning systems (GPS). A GPS placed on a person or moving vehicle can be tracked to monitor movement to specific locations. Similarly, aerial surveillance carried out by national governments can track objects on the ground.

 

What is an Acoustic Transducer?

What will you do if i stated I had found a earpiece short article that isn’t only fascinating but educational also? I knew you wouldn’t believe me, so here it is the educational, excellent and fascinating editorial

An acoustic transducer is an electrical device that coverts sound wave vibrations into mechanical or electrical energy. They have various practical applications, including sound recording and sound playback. A specialized model, called an ultrasonic acoustic transducer, can be used to measure distance to, as well as the mass of, an object.

Common types of acoustic transducers used in sound recording include microphones, earphones, and guitar pickups. These create electrical energy when moving parts inside the transducer, such as electrical plates or ribbons, are exposed to sound vibrations. The electrical energy produced inside the transducer is sent first to an amplifier.

The amplifier then sends this energy to its final destination, usually a loudspeaker or recording device. The loudspeaker reproduces the sound at a level that the human ear can hear. A recording device will retain the electrical signal information. The recorder will send the stored signal to a loudspeaker during playback.

An ultrasonic acoustic transducer can be used to measure distance or the mass of an object. The most common type is the piezoelectric acoustic transducer. These include a piezoelectric ceramic element that creates and distributes ultrasonic sound waves.

Sound waves travel to an object from a piezoelectric transducer through material called a couplant. The couplant is usually water. Sound waves bounce off the object and return to the transducer in the form of an echo. The time it takes for these echoes to return to the transducer is used to calculate the distance to the object.

Underwater sound navigation and ranging (SONAR) is a common use of an ultrasonic acoustic transducer. SONAR uses directional beams of sound waves. This enables the SONAR operator to determine the direction and distance to an object.

SONAR systems can be active or passive. An active system sends out sound waves and listens for echoes. A passive system listens for noises made by ships, fish, and landmasses.

An electromagnetic acoustic transducer (EMAT) is another form of ultrasonic transducer. Instead of a ceramic element, an electro magnet is the main component of an EMAT. This is a type of non-contact, or non-destructive transducer. Unlike piezoelectric transducers, EMATs do not need a couplant to carry sound waves. Instead, two electromagnetic fields are generated to disburse ultrasonic waves.

EMATs can easily be used almost anywhere since no liquid is needed. For example, EMATs can be used to check for flaws in underground pipes. A downside to EMATs, compared to piezoelectric transducers, is that EMATs create weaker sound fields.