We all love to go wireless, and it is also the way things are supposed to be for a hassle-free setup. As a result, there is a wireless alternative available for almost all types of devices that we use on a daily basis. Nowadays, you can find a wireless alternative option even for a display connection which is a wireless HDMI transmitter. Though it is not that rare, it is still not as popular as traditional connectivity options. A wireless HDMI transmitter simply helps you to transfer HDMI signals wirelessly to your display device. Here are some factors that can assure the best quality for such a device.
- Available Range: The range is a crucial factor for all types of wireless devices and an HDMI transmitter is not an exception for it. You would want to pick up a wireless HDMI transmitter that can transmit a signal from the video source to your display without any disturbance.
- Supported Resolution: Even if you are choosing a wireless mode of display transmission, you would not want to face any quality degradation from the source For that, we will suggest going with an HDMI transmitter that offers up to 4K resolution output.
- Additional Cables and Adapters: Even though the main reason for switching to a wireless HDMI transmitter is to avoid excess cables lying around your setup, you will still have to think about the power adapter of the device as well as a converter if one is needed. When you are using a wireless HDMI transmitter, you will have to make sure that the source and the receiver are in sight of each other.
We have gathered this list of the best wireless HDMI transmitters that you can install in your home and enjoy a wireless setup. Apart from the specifications mentioned above, there are a couple more things that you need to know before buying a wireless HDMI transmitter that we will discuss in our “Buying Guide”.
Best Wireless HDMI Transmitter: Table
| Wireless HDMI Transmitter | Transmission Range | Supported Resolution | Buy Now |
|---|---|---|---|
| SanDisk Wireless HDMI Transmitter | 100 ft | 1080p | Check On Amazon |
| ScreenBeam Actiontec Wireless HDMI Transmitter | 150 ft | 1080p | Check On Amazon |
| TIMBOOTECH Wireless HDMI Transmitter | 165ft | 4K | Check On Amazon |
| TPUFO Wireless HDMI Transmitter | 98ft | 4K, 1080P | Check On Amazon |
| Aries Pro Wireless HDMI Transmitter | 100ft | 1080p | Check On Amazon |
| AIMIBO Wireless HDMI Transmitter | 165ft | 4K, 1080P | Check On Amazon |
| TTQ Wireless HDMI Transmitter | 100ft | 4K, 1080P | Check On Amazon |
| POFAN Wireless HDMI Transmitter | 165ft | 4K | Check On Amazon |
| BRAIDOL Wireless HDMI Transmitter | 100 ft | 4K, 1080p | Check On Amazon |
| Mirabox Wireless HDMI Transmitter | 200m | 1080p | Check On Amazon |
Best Wireless HDMI Transmitter Reviews
1. SanDisk Wireless HDMI Transmitter
SanDisk enhances connectivity with its wireless HDMI transmitter and receiver, designed to facilitate the seamless delivery of high-definition content in diverse environments. Connect everything from laptops to projectors or gaming consoles to TVs without the hassle of tangled cables. This user-friendly kit supports dual-band 2.4/5GHz frequencies, ensuring a stable and powerful connection up to 100 feet away, suitable for both residential and commercial settings.
Ideal for a variety of settings, this versatile transmitter streams high-definition 1080p video at 60Hz, ensuring no lag or loss of quality. Whether you’re looking to enhance your gaming experience, make your presentations more dynamic, or simply enjoy superior video streaming, this device delivers. Plus, its small size and light weight make it incredibly easy to transport and use in different locations.
While this transmitter excels in many areas, it falls short by not supporting mobile phone screen sharing—a notable limitation for users who prefer streaming directly from their smartphones. Nevertheless, for those relying on conventional HDMI inputs, this transmitter and receiver kit offers a blend of robust performance and convenience, making it a standout choice in its category.
Specifications:
- Dual-band 2.4/5GHz wireless connectivity
- Supports 1080p resolution at 60Hz
- Range up to 100 feet
- Plug-and-play installation
- Compact and lightweight design
- HDMI compatibility
- Non-support for mobile screen sharing
- Requires power source for receiver
- Auto-pairing technology
- Supports major OS platforms
Pros:
- High-definition video support
- Ultra-low latency transmission
- Long-range capability
- Easy to setup and use
- Compact and portable
Cons:
- No mobile screen sharing
- Setup may need tweaking
- External power needed
2. ScreenBeam Actiontec Wireless HDMI Transmitter
ScreenBeam’s Actiontec multi-room HD video kit frees your home theater from the tangle of cables, extending HDMI capabilities wirelessly across your living space. This advanced second-generation kit boosts your viewing pleasure by streaming crystal-clear 1080p HD content from as far as 150 feet away from your cable or satellite box. Perfect for situating HDTVs in areas without HDMI wiring, it delivers unparalleled flexibility along with pristine quality.
With support for HDMI devices, this can wirelessly connect to most cable, satellite boxes, Blu-ray players, and other media and gaming consoles. It eliminates the need for WiFi, providing a dedicated signal that does not interfere with your home’s wireless network. This feature ensures a more reliable and consistent high-definition video and audio stream, critical for enjoying movies, TV shows, and gaming without any disruptions.
Despite some occasional syncing delays and a setup that goes beyond plug-and-play, this transmitter excels in delivering wireless HDMI solutions effectively. It allows users to stream high-definition content to multiple HDTVs simultaneously, making it ideal for larger homes or venues where traditional HDMI cables would be cumbersome. Its versatile functionality, paired with strong signal integrity, makes it a standout choice despite the initial learning curve involved in installation.
Specifications:
- Streams 1080p HD video and audio
- 150 feet wireless range
- No WiFi required
- Supports HDMI-enabled devices
- Includes transmitter and receiver
- Requires HDMI cable connection
- 1 surround sound support
- IR blaster cable included
- Multi-room support
- 3D video compatible
Pros:
- Supports multiple HDTVs
- Long transmission range
- Clear HD video quality
- Independent of WiFi
- Supports 3D content
Cons:
- May have syncing delays
- Setup more complex
- Requires direct power
- Occasional interference
3. TIMBOOTECH Wireless HDMI Transmitter
TIMBOOTECH offers a wireless HDMI transmitter and receiver designed to enhance your audiovisual setup by providing seamless 4K streaming capabilities without the clutter of cables. This model stands out for its robust performance, capable of supporting high-definition video up to 4K at 30Hz, while ensuring reliable and extended transmission up to 165 feet in open sight. Ideal for everything from home theaters to large conference rooms, it ensures high-quality, reliable streaming is at your fingertips.
The transmitter stands out for its user-friendly design; it’s ready to use right out of the box, with no complex setup or software needed. It offers reliable dual-band 2.4G/5G transmission, ensuring strong and stable connections through walls or other obstacles. This is particularly beneficial for users who need a consistent signal across different rooms or floors. Additionally, the kit supports both mirroring and extending displays, which can be especially useful in professional environments or at live events.
While the TIMBOOTECH transmitter performs admirably in static setups and presentations, it encounters limitations in competitive gaming environments where ultra-low latency is critical. Additionally, while it supports a wide array of HDMI-enabled devices, its mobile compatibility is limited, which could be a drawback for users looking to stream directly from smartphones or tablets.
Specifications:
- Supports 4K at 30Hz resolution
- Dual-band 2.4G/5G transmission
- 165 feet transmission range
- Plug-and-play setup
- Mirror and extend modes
- Compatible with HDMI devices
- Does not support mobile devices
- Requires external power source
- Compact and portable design
- Supports major streaming services
Pros:
- Extended wireless range
- High-resolution support
- Stable and strong signal
- Easy to use and setup
- Versatile display modes
Cons:
- Not ideal for gaming
- External power required
- 4K limited to 30Hz
- Minor latency issues
4. TPUFO Wireless HDMI Transmitter
TPUFO wireless HDMI transmitter and receiver, designed to seamlessly stream high-definition video and audio from your laptop, PC, or any HDMI-equipped device directly to monitors or projectors. Perfect for use in conference rooms, home theaters, and classrooms, this kit supports 1080P/60Hz video resolution, ensuring crisp, clear presentations and entertainment in any setting where cables might clutter the aesthetic.
Designed for mobility and quick deployments, the transmitter shines with its compact form factor and robust dual-band connectivity that cuts through obstacles effortlessly. This makes it an ideal choice for challenging environments where walls and large spaces often interfere with signal strength. Additionally, its plug-and-play setup ensures that you won’t waste any time with complex configurations, making it ready to use when and where you need it.
Although many benefits come with the TPUFO, it’s important to note some drawbacks as well. The device offers a respectable range of up to 98 feet, but this can be reduced when obstacles such as dense walls come into play, which might pose a problem in structures with multiple floors. Additionally, the lack of 4K video support could be a significant drawback for those who require high-resolution outputs for their setups.
Specifications:
- Supports 1080P/60Hz video resolution
- Dual-band 2.4G/5G wireless connectivity
- 98 feet maximum transmission range
- Plug and play simplicity
- Compact and lightweight design
- Requires external power source
- No 4K video support
- HDMI compatibility
- Not suitable for mobile devices
- Robust against interference
Pros:
- Clear HD video quality
- Stable and reliable connection
- Easy setup and operation
- Portable and discreet
- Effective through barriers
Cons:
- Reduced range through walls
- External power required
- Not for mobile device mirroring
5. Aries Pro Wireless HDMI Transmitter
Nyrius Aries Pro is a robust HDMI transmitter and receiver kit designed to stream high-definition 1080p 3D video seamlessly to your HDTV, projector, or monitor. Ideal for environments where direct cable connections are not feasible, such as elaborate home theater setups or professional videography locations, this kit ensures flexible and cable-free arrangements. The Aries Pro’s capability to transmit signals up to 100 feet allows extensive setup options for large rooms and multi-room environments.
For applications demanding real-time video transmission, such as live streaming or gaming, the zero-latency feature of the Aries Pro stands out, making it an indispensable tool for professional videographers and drone enthusiasts. Its plug ‘n play setup adds to its charm, offering simplicity and ease of use that appeal to users who value convenience over complex technical configurations. This makes it not only a practical choice for professionals but also accessible for hobbyists who need reliable, immediate footage without any fuss.
Despite its many advantages, the Aries Pro is not equipped for 4K video transmission, potentially limiting its appeal to those using the latest ultra-high-definition content. Furthermore, its reliability may waver in the presence of physical obstructions or electronic interference, presenting challenges in densely populated settings or complex layouts.
Specifications:
- Transmits 1080p 3D video
- Zero-latency transmission
- 100 feet transmission range
- Supports HDMI 1.3
- Compact transmitter design
- Plug ‘n play setup
- Not suitable for 4K video
- USB power source required
- Real-time video feed capability
- Suitable for camera and drone use
Pros:
- High-quality HD video transmission
- Ideal for live-feed applications
- No perceivable delay
- Easy to set up and use
- Effective at extended ranges
Cons:
- Performance varies with obstacles
- Susceptible to wireless interference
- Limited to HDMI 1.3 specifications
- Requires USB power for operation
6. AIMIBO Wireless HDMI Transmitter
AIMIBO’s wireless HDMI transmitter redefines the way you stream media, offering an impressive 165 feet of wireless transmission. This versatile device connects to a variety of HDMI-enabled equipment, allowing you to easily stream 4K video at 30Hz from laptops, desktops, or other sources to HDTVs or projectors. Whether you’re upgrading your home theater or presenting in a spacious conference room, AIMIBO ensures smooth, high-quality streaming without the clutter of cables.
With its dual-band 2.4G/5G capability, this device delivers a reliable and consistent connection even in challenging environments where physical and electronic interference can cause issues. This strength enables smooth performance over longer distances, reducing disruptions. Coupled with its low-latency performance, the device ensures perfect synchronization between video and audio, making it an excellent choice for users involved in live streaming or gaming.
Supporting 4K at 30Hz, AIMIBO may not fully satisfy users who prioritize high-quality ultra-HD media, especially given the growing prevalence of higher frame rate options. This lower refresh rate could make a noticeable difference for those who expect seamless playback. Furthermore, its effective range might be diminished by architectural barriers, such as thick walls or metal objects, which can interfere with signal strength.
Specifications:
- Supports 4K at 30Hz resolution
- Dual-band 2.4G/5G transmission
- 165 feet maximum range
- Low-latency technology
- Plug and play setup
- Compatible with various HDMI devices
- Not ideal for ultra-high frame rates
- Sensitive to physical obstructions
- Requires external power supply
- 1 TX can pair with up to 8 RXs
Pros:
- Extended wireless range
- Supports 4K content
- Reliable dual-band connectivity
- Minimal transmission delay
- Versatile device compatibility
Cons:
- Performance decreases through barriers
- External power required for operation
- Complexity in multi-receiver setups
7. TTQ Wireless HDMI Transmitter
TTQ’s wireless HDMI transmitter and receiver excels in providing a reliable solution for streaming HD content across spaces as large as 100 feet. Designed with 1080P output in mind, this device guarantees a high-quality audio-visual experience suitable for various settings like home theaters, office presentations, or gaming setups where cable clutter can be an issue. Its straightforward plug-and-play design allows for quick installation without the need for complex configurations, making it user-friendly for both tech-savvy individuals and beginners.
Designed with a sleek metal housing, the transmitter’s standout feature is its dual-band 2.4G/5G capability, ensuring a reliable connection even when devices compete for bandwidth. This allows for smooth and uninterrupted performance in environments where network congestion is a concern. In addition to its robust connection capabilities, the sturdy metal exterior protects the internal components from damage, while minimizing electromagnetic interference for consistent performance.
The device performs admirably under many circumstances; however, it does not support 4K resolution, potentially limiting its appeal for high-definition media enthusiasts. Moreover, although it boasts an impressive range, the actual effectiveness can decrease when physical obstructions are present, suggesting that placement might need careful consideration for optimal functionality.
Specifications:
- Supports 1080P HD video output
- Dual-band 2.4G/5G WiFi support
- 100 feet transmission range
- Metal housing for durability
- Plug-and-play installation
- Not compatible with 4K resolution
- Low latency under 0.01s
- LED display for connection status
- Requires external power source
- Not suitable for smartphone or tablet mirroring
Pros:
- High-definition video support
- Stable and fast wireless connection
- Durable and stylish design
- Easy to set up and operate
- Effective through most barriers
Cons:
- Range may decrease with obstructions
- External power required
- Limited mobile device compatibility
- No support for ultra-high frame rates
8. POFAN Wireless HDMI Transmitter
POFAN’s HDMI transmitter and receiver are designed to support 4K video at 30Hz, making them perfect for home theaters, extensive office presentations, and educational settings requiring wireless connectivity. This device enhances the streaming experience by offering the capability to transmit high-quality video and audio up to a significant range of 165 feet, catering to users who seek performance and convenience.
With its plug-and-play features, the transmitter offers a straightforward setup devoid of software installations or intricate technical setups. This functionality is particularly advantageous in environments where quick setup is crucial, like business presentations or educational scenarios. The presence of HDMI and VGA connectors further increases its versatility, making it compatible with a broad range of displays.
Although it excels in video quality and ease of use, the device’s limitation to a 30Hz refresh rate at 4K resolution restricts its appeal for high-frame-rate gaming or advanced HD content. Moreover, its performance can be significantly hindered by barriers such as walls or floors, which might necessitate thoughtful placement or the purchase of extra units depending on the home’s structure.
Specifications:
- Supports 4K at 30Hz resolution
- Dual HDMI/VGA connectivity
- 165 feet line-of-sight transmission
- Plug and play installation
- Compatible with multiple HDMI devices
- Limited to 30Hz for 4K content
- Affected by physical barriers
- Requires external power supply
- Supports major streaming services
- Designed for various professional and casual uses
Pros:
- High resolution and clarity
- Extended wireless range
- Easy setup without software
- Broad device compatibility
- Versatile connector options
Cons:
- Signal strength diminishes with obstacles
- Power supply dependency
- Some lag possible through walls or floors
9. BRAIDOL Wireless HDMI Transmitter
BRAIDOL’s wireless HDMI transmitter and receiver set ensures high-definition content can be transmitted seamlessly over distances up to 100 feet. Supporting 4K resolution at 30Hz, it is an ideal choice for users aiming to enhance their home entertainment systems or to streamline multimedia presentations in professional settings. Its plug-and-play functionality makes it incredibly user-friendly, requiring no extensive setup or technical expertise.
The transmitter ensures seamless video and audio streaming with its dual 2.4G/5G transmission, tackling unstable connections in interference-prone environments effectively. The revamped LED display provides real-time feedback, highlighting connection status, signal strength, and power levels, which enhances user control and simplifies troubleshooting in various settings, including crowded offices or residential areas with multiple electronic devices.
While the BRAIDOL transmitter excels in delivering 4K resolution, its 30Hz refresh rate may fall short for gaming enthusiasts or when viewing content that demands quicker frame rates. Moreover, its wireless nature means that barriers such as walls or large furniture can impede its performance, potentially requiring users to think strategically about where they place the device to ensure optimal signal transmission.
Specifications:
- Supports 4K at 30Hz resolution
- Dual-band 2.4G/5G transmission
- 100 feet transmission range
- Plug and play setup
- Upgraded LED display
- Limited to 30Hz for 4K content
- Susceptible to interference by barriers
- Compact and lightweight design
- Not suitable for high-frame-rate tasks
- Ideal for multimedia, not high-action gaming
Pros:
- High-definition 4K support
- Reliable dual-band connectivity
- User-friendly interface with LED display
- Portable and easy to transport
- Efficient setup without software
Cons:
- Range reduction through physical barriers
- Requires careful placement for optimal use
- Not ideal for advanced gaming
- External power source needed
10. Mirabox Wireless HDMI Transmitter
Mirabox offers a practical solution for extending HDMI signals with its wireless HDMI transmitter and receiver, designed to reach up to 656 feet in optimal line-of-sight conditions. This system is particularly useful for covering large areas without losing video quality, supporting 1080p resolution at 60Hz. Whether it’s for an outdoor event or a complex home entertainment setup, Mirabox provides a reliable and high-quality transmission that meets the needs of any demanding environment.
With its advanced scalability, the device provides a solution for transmitting to multiple receivers from just one unit, making it perfect for varied display setups in large venues. The use of 5.8GHz dual antennas helps achieve a stable and strong signal, which is essential for maintaining seamless communication across extended distances. Additionally, the remarkably low latency of 0.12 seconds facilitates real-time interactions, making it an excellent choice for professional presentations and educational broadcasts.
Despite its potential for wide-ranging signal coverage, the Mirabox can encounter significant limitations imposed by physical obstructions. The complexity inherent in its design also necessitates a more comprehensive setup and troubleshooting process, which can be particularly challenging when multiple receivers are involved.
Specifications:
- Supports 1080p at 60Hz video
- 656 feet maximum line-of-sight range
- 8GHz dual antenna setup
- Supports up to four receivers
- 12-second low latency transmission
- Complex setup for multiple receivers
- Susceptible to signal interference
- HDMI loop-out for local display
- IR remote control support
- Requires precise alignment for maximum range
Pros:
- Long transmission range
- High-definition video support
- Scalable to multiple displays
- Low latency ideal for live events
- Includes HDMI loop-out feature
Cons:
- Reduced range with obstructions
- Potential for signal interference
- Limited to HDMI 1.3 specifications
Buying Guide For The Best Wireless HDMI Transmitter
If there is one thing that is quite hard to get rid of from any type of setup, it is the cable. You see, there are different types of cables used for every setup whether it is a desktop PC setup or a smart TV setup in your living room. But, there is one cable that you can get rid of easily which is the HDMI cable. You can do that with the help of a wireless HDMI transmitter. A wireless HDMI transmitter lets you stream video as well as audio signals from any HDMI output device like a console, DVD player, or streaming box to any display that supports HDMI input.
Even though the installation of such a device is quite easy, choosing the right one for the job can get quite difficult, especially with the wide range of options available in the market right now. To help you with that, we are bringing this helpful buying guide for the best wireless HDMI transmitters. In this guide, we will talk about some important features and specifications of such a device that will let you choose the perfect option in your budget to suit your needs.
1. Range of the Transmitter
Wireless HDMI transmitters are only good enough for your application if they can transmit the signal uniformly to the display device without any hurdles. Usually, the one factor that can create variations in terms of performance is the supported range of a wireless HDMI transmitter. A wireless HDMI transmitter works on IR technology. So, as the distance between the transmitter and receiver increases, the quality of the transmitter decreases.
To overcome that, most brands these days offer a powerful transmitter that can create a powerful source of a signal which can be transmitted over a long distance. So if you want to check the capability of your wireless HDMI transmitter, you should check out the range of the wireless HDMI transmitter. To help you with that, we have specified the suitable range for all our picks. With that in mind, you can easily choose the right option for your setup based on the distance between your HDMI source and the display. With the right option, you can use the same transmitter for different receivers attached to your TV, monitor, etc.
2. Design Quality
Apart from the quality of the signal transmission, you should also check the physical design of the device and get an idea about its quality before you buy one. While it is not possible to check each and every option personally, you can simply take a look at specifications and sizes to get an idea about its design. Just like most other types of transmitters, a wireless HDMI transmitter also tends to get hot while it is in use. So, you need to pick up a slightly larger unit with good heat dissipation if you want to use the transmitter for a longer duration. The best options for this are ones that are made up of Aluminum or ABS material.
However, you should concern yourself with this factor too much if you are not going to use the device for more than 3 to 4 hours a day, or if you live in a rather colder region. Another important factor regarding the design of the transmitter is the swappable antenna option. With such an option, you get the chance to replace only the antenna of a transmitter instead of the whole unit if one of your antennas is damaged.
3. Ease of Installation
Another factor that becomes a deal breaker for many buyers is the difficulty of installation for a wireless HDMI transmitter. An ideal wireless HDMI transmitter should be one that can be easy to install and move around if needed. Also, a wireless HDMI transmitter should be easy to use just like other types of display streaming devices. But, it is only possible if the wireless HDMI transmitter that you are selecting offers the right connectivity option along with a simplistic design aspect.
Most wireless HDMI transmitters that we have selected for this list today offer plug-and-play type installation. All you will have to do is power the transmitter, pair it with the receiver, and plug the receiver into the HDMI port of your display. And if you have an older projector or laptop that you want to use with a wireless HDMI transmitter, you will have to go with one that offers VGA connectivity in case the HDMI port is not available on your monitor. Other than that, there is usually no need of installing a driver or software of any kind to use a wireless HDMI transmitter.
4. Reliability
When it comes to wireless appliances, you will notice that such appliances and accessories are usually a bit more premium compared to their wired alternatives. And the same goes for a wireless HDMI transmitter. So, you would definitely want your wireless HDMI transmitter to last long so that you won’t have to look for a replacement anytime soon. To ensure that, you should go with an option that comes with a long warranty period.
With such an option, you can rest assured that you will be able to use the transmitter at least until the end of the warranty period, if not beyond. Within the warranty period, you will be able to claim free-of-cost repairs or even replacement for a certain part if it gets damaged or does not perform well. Some brands also offer a money-back guarantee for a certain period of time, allowing you to thoroughly check the device and make sure whether it is the right option for you or not. If you notice there are some problems with the device, or it is simply not the right one for you, you will be able to return the product to the manufacturer and get your money back without any problem.
Wireless HDMI Transmitter – FAQs
Ans: Just like your router is a signal transmitter and your smartphone is a signal receiver, a wireless HDMI transmitter also comes with a transmitter and a receiver combo to work. The HDMI transmitter is plugged into the source of the video or audio such as a console or a laptop whereas the receiver is plugged into the display unit. The HDMI transmitter receives the signal from the source, converts it into a wireless signal, and transmits it into the room. This signal is then received by the receiver that decodes it back to audio/video signals and the image is rendered on your monitor or TV.
Ans: Now that you know how a wireless HDMI transmitter works, you might be wondering if it would interfere with your WiFi network, or if the speed of your WiFi would be hampered by a wireless HDMI transmitter. While it is technically possible for networks to collide with each other, it usually is not nearly severe enough to cause hurdles with signal transmission. If you are still noticing frequent glitches or disturbances in the transmission, you can simply spread out the devices around your room and check if that helps.
Ans: Since a wireless HDMI receiver and a standard HDMI streaming device like MiraCast or Chromecast look quite similar, it is possible to get confused between these products and wonder whether they are the same or not. However, keep in mind that an HDMI streaming box does not stream content from an HDMI source like a wireless HDMI receiver. Instead, it connects to your WiFi and gets the content from the Internet, or via your WiFi signals while you are casting the screen.
Conclusion
Choosing the right wireless HDMI transmitter depends on your specific needs, such as range, video quality, and ease of use. Based on our findings, the Nyrius Aries Pro Wireless HDMI Transmitter is ideal for high-performance needs, offering 1080p support and low latency. For budget-conscious buyers, the AIMIBO Wireless HDMI Transmitter delivers great functionality at a lower cost. If you prioritize long-range transmission, the Nyrius Aries Pro+ Wireless HDMI Video Transmitter stands out with its solid range and consistent signal quality
