What is long range bluetooth

What Is The Range Of A Bluetooth Device?

approximately 30 feet.
The range of the Bluetooth® connection is approximately 30 feet (10 meters). However, maximum communication range will vary depending on obstacles (person, metal, wall, etc.) or electromagnetic environment. NOTE: Not all audio devices are supplied with Bluetooth capability.

• 1 What is the range of Bluetooth on a phone?
• 2 Can Bluetooth go through walls?
• 3 How do I know my Bluetooth range?
• 4 Can you increase Bluetooth range?
• 5 How can I extend my phone’s Bluetooth range?
• 6 Can Bluetooth go through wood?
• 7 What materials can Bluetooth penetrate?
• 8 Can Bluetooth penetrate glass?
• 9 What Bluetooth has the longest range?
• 10 What is the maximum distance of a Class 3 Bluetooth device?
• 11 What blocks a Bluetooth signal?
• 12 Can you use Bluetooth over WiFi?
• 13 Why is Bluetooth range so short?
• 14 What affects Bluetooth range?
• 15 How can I make my Bluetooth signal stronger?
• 16 How many speakers can you connect to a Bluetooth transmitter?
• 17 Can Bluetooth penetrate metal?
• 18 Can Bluetooth go through plastic?
• 19 How can I block my neighbors Bluetooth?
• 20 How far does Bluetooth reach through walls?

What is the range of Bluetooth on a phone?

10 meters
The effective range of your Bluetooth is 10 meters. You are advised to perform all Bluetooth operations while keeping your phone within a 10 meter radius from your other Bluetooth device(s). This distance may vary according to the environment in which you use these devices.

Can Bluetooth go through walls?

Myth: Bluetooth Can’t Go Through Walls
Think about when you’re trying to hear someone in the next room.But radio waves can still pass through objects, even concrete walls and floors, meaning that a Bluetooth ® signal is not limited to the room you’re in.

How do I know my Bluetooth range?

Checking your Bluetooth signal strength is easy if you know what you’re looking for. Bluetooth signal strength is measured by the Received Signal Strength Indicator (RSSI). You can access the device’s RSSI by accessing the Bluetooth device settings and then reading the RSSI. An ideal RSSI is between -40 and -55.

Can you increase Bluetooth range?

To enjoy a longer range, you need to have an extender that receives Bluetooth from a long range too. For instance, if an extender receives Bluetooth signals from a range of 85 feet and extends the range by 85 feet, then you will have extended your Bluetooth range to 160 feet.

How can I extend my phone’s Bluetooth range?

Another means of extending range is by introducing repeaters into your environment. Repeaters simply pick up messages and repeat them again, which means a repeater placed at the edge of connection can extend that edge out to its own farthest range.

Can Bluetooth go through wood?

Water, bricks and marble have a medium capacity for blocking Bluetooth. At the bottom of the list are wood, glass and synthetic materials like plastic.

What materials can Bluetooth penetrate?

Your best bet is either a metal or a thick partially conductive ceramic to block the bluetooth. Concrete is one example, but you’d need a very thick piece. You’d also have to ensure that the concrete is large enough such that the wave won’t refract around it.

Can Bluetooth penetrate glass?

Bulletproof glass, plaster, and concrete too weaken Bluetooth signals but not as much as the metal objects. Marble, water, and bricks have a mediocre tendency to inhibit the signals. Besides, plastic, glass, and wood can also block a Bluetooth device’s signals.

What Bluetooth has the longest range?

• NuForce BE6i Wireless Bluetooth Headphones. Wireless Range: 98 feet or almost 30 meters.
• BlueAnt – Pump Lite HD Wireless Sportsbuds. Wireless Range: 100 feet or 30 meters.
• Jabra Evolve 65. Wireless Range: 100 feet or 30 meters.
• Plantronics Backbeat Pro. Wireless Range: 330 feet or 100 meters.
• Master and Dynamic MW60.

What is the maximum distance of a Class 3 Bluetooth device?

Officially Class 3 radios have a range of up to 1 metre (3 ft), Class 2, most commonly found in mobile devices, 10 metres (33 ft), and Class 1, primarily for industrial use cases,100 metres (300 ft).

What blocks a Bluetooth signal?

A jammer is any device that blocks the signals of electronic devices.A Bluetooth signal jammer blocks a Bluetooth signal. Numerous devices now have Bluetooth capabilities, so the jammers can work on anything from a cell phone to a speaker.

Can you use Bluetooth over WiFi?

Because Bluetooth and wi-fi signals don’t interfere with each other, you can use both functions at the same time with no issues. When using more than one Bluetooth device at a time, both devices must be Bluetooth linked together for proper usage.

Why is Bluetooth range so short?

Range depends on the class of Bluetooth
Class 2 devices transmit at 2.5 mW with a range of 10 meters or 33 feet. Most Bluetooth headsets and headphones are common Class 2 devices.Thus, the range is affected by transmitting power, receiver sensitivity and obstacles near the device.

What affects Bluetooth range?

There are many factors affecting Bluetooth range, typically: The output power of the transmitter. The sensitivity of the receiver. Physical obstacles in the transmission path.

How can I make my Bluetooth signal stronger?

Change the position or location of the unit or connected device. If the connected device has a cover on it, take it off to improve the communication distance. If the connected device is in a bag or in a pocket, try moving the position of the device. Place the devices closer together to improve signal transmission.

How many speakers can you connect to a Bluetooth transmitter?

Option 3: Chain-Connected Bluetooth Transmitters
Each transmitter can connect up to TWO pairs or Bluetooth headphones, so two transmitters can connect up to FOUR pairs… this chain can theoretically go on and on and on… and connect however many Bluetooth headphones as you want.

Can Bluetooth penetrate metal?

No, Bluetooth is microwave radiation, very similar wavelength though much weaker in strength, than what is in your microwave cooker. It will not pass through metal or a metal grill.

Can Bluetooth go through plastic?

Research carried out by Flomerics has demonstrated the negative effects plastic enclosures can have on the Radio Frequency signal performance of Bluetooth antennae. Manufacturers cannot expect devices to operate optimally simply because a tried and tested antenna is being used.

How can I block my neighbors Bluetooth?

Stop Speakers Jammer
If your neighbors like partying and playing loud music often, and you know their speakers are using Bluetooth, the Stop Speakers Jammer is your best solution. As the name suggests, this device can effectively stop their speakers from playing, provided they’re using Bluetooth.

How far does Bluetooth reach through walls?

Class 2 devices have a range of about 10 meters, or around 30 feet. The range limitations are meant to avoid the quick depletion of the battery. While the Bluetooth signal will work through walls, the more objects that are in between the devices, the less overall range the devices will have.

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Tested by Nordic: Bluetooth Long Range

In this popular article first published in 2018, we demystify the long range capabilities of Bluetooth Low Energy with a range test you can repeat for yourself.

Before the launch of Bluetooth 5, there was just one way to increase range in your Bluetooth Low Energy (BLE) product: By increasing radio transmit power.

But doing this negatively impacted current consumption of your product. High peak currents could also make it impossible to use certain battery types, thereby putting size- or price constraints on your application.

The Bluetooth 5 specification has introduced a number of improvements, including 125kbs or 500kbps ‘long range’ mode, allowing you to increase range at the cost of a reduced data rate and increased average current consumption. Maximum output power is also increased from +10 dBm to +20 dBm, boosting potential range further.

Bluetooth long range tested

Because of many questions and some confusion about the feature, our developer team tested it with the Nordic Semiconductor nRF52840 Rev 1 and documented the results.

If you want to try the test out for yourself, the full process with attached project/binaries is available over on the DevZone blog . But if you’re just interested in the results, read on!

Understanding path loss

For some context behind the experiment, you should understand a bit about path loss. This is the reduction in power density (signal strength) that occurs as a radio wave propagates over a distance.

Radio waves follow an inverse square law for power density: In theory, when radiating from a «single point» (i.e. when antenna dimensions are very small compared to propagation distance), doubling the distance results in 1/4th the energy density at the receiving position. In the real world though, path loss is higher because of precipitation, humidity, signal reflections etc. that further deteriorate the signal.

Vice versa, given that a minimum signal energy density is necessary for successful reception, range can be increased by adding output power. Because that maintains the minimum energy density, over longer distances!

Bluetooth 5 long range in a nutshell

The long range feature provides a way to increase the range without cranking up the output power. This is done by applying Forward Error-correcting Codes (FEC) into the transmission at the hardware (physical) level. Hence, the term «Coded PHY». Of course, it’s a trade-off vs data rate.

It’s like increasing the sensitivity of the receiver by tweaking the transmitter. Theoretically for Bluetooth long range, expect 12dB in the case of coded PHY at 125Kbps compared to 1Mbps mode. This should result in 4 x the range. In real life, standard Bluetooth devices supporting long range, achieve around 8dB increase. This should slightly more than double your range. Let’s see how our test went.

A little about the testing process

The places where you test long range will have different signal propagation characteristics and different path losses. We chose to do this test outdoors to keep things as simple as possible. Indoors there will be too many limiting factors that make it difficult to conclude anything from the results.

We did the range test with the Nordic Semiconductor nRF52840 Rev C, using both 1Mbps PHY and Coded PHY (long range) @ 125Kbps to minimize the effect of random variables on the radio signal, so we can focus solely on the improvement that the long range feature gives over 1Mbps PHY.

The test was focused on range and not power consumption, so this was not a test optimized for power efficiency. We tried to keep the radio active most of the time and used LEDs as visual indicators.

The results

For non-connected *) states (0 dBm Tx power), the distance obtained for 1Mbps PHY 0 dBm TX was 654.92 meters. For Coded PHY 0 dBm TX, the distance was 1,300 meters. That’s double the range with Coded PHY.

For connected **) states (0 dBm Tx power), the distance obtained for 1Mbps PHY 0 dBm TX was 681.9 meters, while for Coded PHY 0 dBm TX the distance obtained was 1,300 meters. That’s an almost-doubled range increase with Coded PHY compared to 1Mbps in connected state at 0 dBm.

For example: In our case, to measure the longer range we had to use a position that involved signal propagation over sea water, while for the 1Mbps mode, everything was done over land. In other words, we were not able to create identical conditions for our tests. So we expected a 2.5 x increase, but got slightly less than 2x instead.

Environmental factors like this are something we’ll watch out for in future tests to see if there are any specific reasons or patterns we can identify.

Test conclusions

With 1M PHY, the scanner logs show that we can get adv packets with a signal strength of around -93 dBm. With Coded PHY @ 125 Kbps, the scanner can still detect adv packets of signal strength around -101 dBm. An improvement in radio sensitivity that shows the long range feature is working.

With a 6 dBm sensitivity increase, the range should theoretically double. In real life, we see that a full 100% increase may not be achieved as it depends on many environmental factors.

Run your own test: Everything you need is on the DevZone blog .

The range improvement will also depend on the radio propagation characteristics, which are outside the control of this BT5 feature. Materials along the path will deteriorate the signal indoors. Regardless, you should still see increased range as compared to 1Mbps PHY, but the exact amount is impossible to generalize.

*) Non-connected states: While establishing a connection, or used as a beacon.
**) Connected states: During an established BLE connection.

This article was first published in May 2018

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