Imagine a world where machines whisper their secrets – factories hum with the production rhythm, weather stations chirp vital data and even your car discreetly shares its health. This real-time communication is the magic of telemetry systems, the invisible heroes collecting and transmitting crucial information from remote locations. But with so many options, choosing the right telemetry system can feel like deciphering a coded message. Fear not, fellow data detective! This guide will crack the code and show you the exciting world of telemetry systems. The Telemetry Trio: Unveiling the Major Types Telemetry systems come in various flavors, each with its strengths and applications. Let's meet the big three: Wireless Telemetry: Picture a scene straight out of a spy movie. Tiny sensors, like covert agents, gather data from your equipment. This information is whisked away through the airwaves using radio signals, reaching a central receiver like a mission control center. Applications: Wireless systems are perfect for short-range data collection from industrial facilities like assembly lines or chemical processing plants. Imagine sensors monitoring temperature, pressure, and vibration on crucial machinery, allowing real-time adjustments and preventing costly breakdowns. Wireless systems are also ideal for environmental monitoring stations, collecting data on air quality, water levels, and weather conditions. Even innovative agriculture systems utilize wireless telemetry, with sensors tracking soil moisture, nutrient levels, and crop health, enabling farmers to optimize irrigation and fertilization practices. Benefits: It is easy to set up and maintain, cost-effective for short distances, and offers real-time data transmission, which is crucial for situations requiring immediate action. Satellite Telemetry:  Imagine a data satellite soaring high above the Earth, like a celestial messenger. Sensors in remote locations, like lone wolves in the wilderness, transmit their data directly to these orbiting satellites, which relay the information back to a central hub on Earth. Applications: Ideal for collecting data from geographically dispersed locations with limited or no terrestrial infrastructure. This makes satellite telemetry perfect for monitoring oil rigs in the ocean, where traditional communication methods might be unreliable. They are also essential for weather stations in remote areas, providing vital data for weather forecasting and climate monitoring. Satellite telemetry even plays a role in wildlife conservation, with researchers using it to track the movements of endangered species across vast distances. Benefits: It has a wide coverage area, perfect for situations where other options are impractical, and offers reliable data transmission even in challenging environments like deserts, oceans, or polar regions. IoT-Based Telemetry: Picture a symphony of connected devices, each playing its part. Sensors embedded in various machines (the instruments) communicate with each other and a central hub (the conductor) using a network like Wi-Fi or Bluetooth. This creates a dynamic flow of information, much like a well-rehearsed orchestra. Applications: Widespread use in smart homes creates a seamless and efficient living environment. Imagine a network of sensors in your house – your thermostat communicating with your smart speakers to optimize heating and cooling or your intelligent lights adjusting based on the time of day and occupancy. Wearables for health monitoring utilize IoT telemetry, with fitness trackers sending data on heart rate, activity levels, and sleep patterns to smartphones for analysis. Industrial automation relies heavily on IoT-based telemetry, with robots and machines communicating with each other and central control systems to ensure efficient production and minimize downtime. Even connected cities leverage IoT telemetry, with intelligent traffic lights and parking meters managing traffic flow and availability in real-time. Benefits: It is scalable and adaptable to various needs, allowing for multiple applications. It is quite easy to integrate with existing infrastructure, minimizing the need for additional hardware or wiring. It allows two-way communication between devices and the central hub, enabling remote control and adjustments to optimize performance or troubleshoot issues. Choosing Your Telemetry Champion: Matching Needs with Systems With the three main types in mind, how do you pick the right telemetry system for your needs? Here are some key factors to consider: Date Range: Wireless offers a shorter range, typically within a few kilometers, while satellites excel at covering vast distances, reaching anywhere on the planet. IoT systems operate within the network's reach, which can be a few meters for Bluetooth to several kilometers for Wi-Fi. Power Source: Wireless and IoT systems often rely on batteries or local power, requiring regular maintenance or replacement. Satellites are self-powered using solar panels, but the collected data might have a slight transmission delay. Cost: Wireless is generally cost-effective for short-range applications. Satellite systems can be expensive for ongoing use due to data transmission fees. IoT system costs vary depending on the complexity of your network and the number of devices you have connected to it. Real-Time Needs: Wireless and some IoT systems offer real-time data transmission, crucial for situations requiring immediate action. Satellite transmission can be slightly delayed, depending on the satellite's position and the data volume. Security: Choose a system with strong security features to protect sensitive data transmission, especially for critical applications or those involving personal information.  FAQs About Telemetry Systems: What can telemetry systems be used for? Telemetry systems have versatile applications, from monitoring industrial processes and environmental conditions to tracking assets and managing remote infrastructure. Here are just a few examples: Predictive maintenance: Sensors in machinery can detect potential problems before they occur, preventing costly breakdowns and downtime. Logistics and transportation: Telemetry systems track the location and status of vehicles and goods in real-time, optimizing delivery routes and ensuring product quality during transport. Smart agriculture: Field sensors can monitor soil moisture, nutrient levels, and crop health, allowing farmers to make informed decisions about irrigation, fertilization, and harvesting. Disaster management: Telemetry systems can monitor weather patterns, flood risks, and other environmental threats, enabling early warnings and emergency response efforts. Are telemetry systems challenging to set up? The complexity of the setup varies depending on the type of system. Wireless and some IoT systems are generally easier to set up, with readily available components and user-friendly configuration options. Satellite systems may require professional installation and expertise for optimal performance. How much does a telemetry system cost? Costs vary depending on the system type, data transmission range, and additional features. Wireless systems are generally the most cost-effective for short-range applications. Satellite systems can be expensive for ongoing use due to data transmission fees. In contrast, IoT system costs can vary depending on the complexity of the network and the number of devices involved. The Final Signal: Telemetry Systems – Connecting Our World Telemetry systems are revolutionizing the way we collect and analyze data. By choosing the right system for your needs, you can unlock a world of insights, improve efficiency, and make informed decisions. From the hum of factories to the chirp of weather stations, telemetry systems are the silent heroes connecting our world, whispering valuable secrets that help us better understand and manage our environment.

Ever craved a connection in the middle of nowhere? Stuck on a mountain trail with a dying phone battery, yearning for a lifeline? Satellite communication is your knight in shining armor, blasting a signal from space to bridge the gap between you and the outside world.  How Information Travels Through Space? Think of a high-tech satellite orbiting Earth like a tireless courier. It is equipped with powerful antennas and acts as a cosmic relay station, flinging information back and forth. Here's the satellite communication system breakdown, clear as day: Liftoff! Launching Your Message Skyward: The journey starts at a ground station – a fixed Earth location with a dish antenna aimed precisely at the satellite. This antenna focuses a beam of radio waves carrying your message (phone call, internet data) toward the satellite. Imagine a spotlight hitting a distant target in the night sky!  The Satellite Takes Charge: The satellite snatches your faint signal out of thin air with its advanced receivers. It then boosts the signal, like cupping your hands around your mouth to further project your voice. Beam Me Up! Broadcasting the message Onward: The amplified signal zooms back down to Earth, targeted towards another ground station or directly to your mobile device (like a satellite phone). Think of it like throwing a tennis ball high in the air and catching it on the other side of the net. The Frequency Feast: Different Signals for Different Needs Just like radios tune into specific channels, satellites use various frequencies for diverse purposes. Imagine a multi-lane highway with each lane catering to different types of vehicles. Here's a quick explanation: Lower Frequencies (L-Band, C-Band): These signals travel vast distances but require large dish antennas for reception. They're often used for satellite TV, radio, and maritime communication. Think of them as long-distance truckers on the information highway, carrying bulky cargo over long stretches. Higher Frequencies (Ku-Band, Ka-Band): These weaker signals allow for smaller antennas. They're commonly used for satellite internet, GPS navigation, and military applications. Imagine them as speedy motorcycles on the information highway, delivering smaller packages quickly. Frequently Asked Questions about Satellite Communication 1. Can I use regular phones with satellite communication? Nope, not usually. Regular phones rely on networks of cell towers on the ground. However, some specialized satellite phones can connect directly to orbiting satellites, a perfect solution for remote areas. 2. Is satellite internet faster than cable or fiber optic internet? Generally not. Satellite internet signals travel a much longer distance, causing a delay (latency) in communication. Think of it as sending a message in a bottle; it takes time to reach its destination. However, satellite internet is a game-changer for areas without traditional internet options. 3. Are there any downsides to satellite communication? Satellite communication can be more expensive compared to terrestrial options. Additionally, bad weather can sometimes disrupt signal quality. Imagine heavy rain blurring the signal on a cosmic video call. The Expanding Universe of Satellite Communication The world of satellite communication is constantly evolving. New constellations of smaller satellites are launching, promising faster internet speeds and broader coverage. As technology advances, this space-based connection will become even more crucial, bridging the digital divide and keeping us connected, no matter how remote our location on Earth. Reaching New Heights: Applications of Satellite Communication Beyond connecting you from the peak of a mountain, satellite communication has a vast array of applications: Bridging the Digital Divide: In areas without traditional internet infrastructure, satellite internet provides a lifeline for education, healthcare, and communication. Imagine students in remote villages accessing educational resources or doctors receiving critical medical data – all thanks to satellite communication. Disaster Relief: Satellite communication becomes essential for rescue and recovery efforts during natural disasters that disrupt terrestrial networks. Emergency responders can coordinate efforts, share vital information, and communicate with the outside world, even in devastated areas. Navigation and Exploration: From GPS navigation systems to tracking ships at sea, satellite communication plays a vital role in global positioning and exploration. Imagine a hiker navigating a dense forest with the help of GPS or a ship captain relying on satellite signals to chart a safe course – these are just a few examples of how satellite communication keeps us on track. Military and Defense: Secure and reliable communication is paramount for military operations, and satellite communication provides a crucial channel for command and control. Soldiers on the ground can communicate with headquarters, share battlefield information, and coordinate maneuvers – all thanks to the secure network provided by satellites.

Weak, crackly signals plaguing your satellite communication system? Don't let frustration disconnect you! Optimizing your satellite communication (Satcom antenna) can significantly improve signal strength, clarity, and performance. This guide equips you with the knowledge to transform your Satcom antenna from a wobbly microphone into a powerful loudspeaker, ensuring your voice reaches vast distances. Why Should You Optimize Your Satcom Antenna Performance? Think of a satellite dish as a catcher's mitt for radio waves. A well-optimized mitt ensures a clean catch, while a worn-out one lets the ball slip through. Optimizing your Satcom antenna helps it "catch" the faint signals from distant satellites more effectively, leading to: Stronger, Clearer Signals: Say goodbye to garbled audio and fuzzy video. Optimization translates to a more robust and reliable connection, allowing you to confidently transmit and receive data, voice, and video calls. Increased Transmission Range: A well-tuned antenna can squeeze every ounce of power out of the signal, allowing you to communicate with satellites further away. This expands your operational range, making satellite communication viable for remote locations or disaster response scenarios. Reduced Errors and Interference: Imagine a crowded radio channel with everyone talking over each other. Optimization helps filter out unwanted noise and electromagnetic interference, ensuring your message cuts through clearly. This minimizes errors and frustrations, allowing for seamless communication. Fine-Tuning Your Satcom Antenna: Techniques for Peak Performance Here are some techniques for optimizing your Satcom antenna performance: Precise Pointing: Accuracy is Key! Imagine aiming a laser pointer – a tiny misalignment can send the red dot way off target. Similarly, slight deviations in your Satcom antenna's pointing direction can significantly weaken the signal. Regularly check and adjust the antenna's alignment using a signal strength meter or following the manufacturer's instructions. Clear the Signal Path:  Give Your Signal Room to Breathe! Think of a singer needing a clear microphone to hear their voice. Obstructions like trees, buildings, or heavy rain can block the signal path between your antenna and the satellite. Clear any obstacles in the line of sight to ensure a smooth signal flow. Choose a location with a clear view of the southern sky for optimal signal reception. Tighten Up Those Connections: A Secure Fit Matters! Loose or corroded cables can act like a bad connection in headphones—static and frustration are guaranteed. Inspect and tighten all cable connections between your antenna and receiver for optimal signal flow. Loose connections can introduce noise and signal degradation, hindering communication quality. Amplify When Needed:  Give Your Signal a Boost! Imagine a microphone needing extra power for a large audience. In situations with weak signal strength or long distances, a signal booster can amplify the incoming signal, giving it the extra push it needs for a clear connection. Consider consulting a qualified technician to determine if a signal booster is necessary for your needs. Regular Maintenance:  Keep Your Antenna in Top Shape! Like any equipment, your Satcom antenna benefits from regular care. Clean the antenna surface to remove dirt, dust, or debris that could affect signal reception. Follow the cleaning and maintenance recommendations in the manual to ensure optimal performance. A clean and well-maintained antenna is essential for maximizing signal strength and reception quality. Choosing the Right Optimization Technique: The best approach to optimizing your Satcom antenna performance depends on the situation. Here's a quick guide: For Occasional Signal Weaknesses: Start with straightforward solutions like checking the antenna's pointing and cable connections. For Consistent Signal Issues, Consider investing in a signal booster to amplify the incoming signal. For Long-Distance Communication: A combination of precise pointing, a clear line of sight, and a signal booster might be necessary.  FAQs about Satcom Antenna Optimization: How often should I check my antenna's pointing? The frequency depends on factors like wind exposure or potential ground movement. Monthly checks are a good starting point. What are the signs of a poorly optimized antenna? Weak signal strength, frequent dropouts, and distorted audio/video are all potential indicators. Can I optimize my antenna myself? Simple maintenance tasks can be done yourself. However, consulting a qualified technician is recommended for complex adjustments or signal booster installation. Their expertise can ensure optimal performance and avoid any potential damage to your equipment. Unlocking the Full Potential of Your Satellite Communication Implementing these optimization techniques allows you to transform your Satcom antenna into a reliable and powerful communication tool. Remember, a well-maintained and optimized antenna.

  Frustration rises as your UAV's (Unmanned Aerial Vehicle) signal weakens, the screen flickers and the connection sputters. You're not alone. Standard data link ranges can clip your drone's wings in critical situations, hindering its ability to capture vital information from afar. But fear not, drone pilots! This is where data link range extension techniques come in. Think of them as unique tools that help amplify the signal from your UAV, allowing it to transmit precise data even from greater distances. Think of them as unique tools that help amplify the voice of your UAV, allowing it to shout critical information back to you from even greater distances. Why Extend Your UAV's Data Link Range? Imagine vast farmland needing inspection, sprawling search and rescue operations, or capturing breathtaking aerial footage from a remote mountain peak. A standard data link range might clip your drone's wings in these scenarios, limiting its potential. Extending the range lets your drone fly farther, see more, and transmit that information clearly, opening doors to a broader range of applications. Boosting the Signal: Techniques for Extending Your UAV's Reach Here's a toolbox filled with techniques to help your UAV's data link shout louder and more apparent: Harnessing the Power of Higher Frequencies: Imagine radio waves as whispers and shouts. Lower frequencies travel farther but carry less information (whispers). Higher frequencies, like those in the UHF (Ultra-High Frequency) and SHF (Super High Frequency) bands, pack more data (shouts) but travel shorter distances. You can extend the range by strategically using higher frequencies with directional antennas that focus the signal like a spotlight while maintaining a solid connection. The Antenna Chemistry: Shaping the Signal for Success: Think of antennas as the megaphones for your UAV. An omnidirectional antenna broadcasts the signal in all directions, while a directional antenna, like a spotlight, focuses it in a specific direction. Using directional antennas on both the UAV and the ground control station, you can concentrate the signal strength, punch through obstacles, and extend the range. Signal Boosters: Lending a Helping Hand: Imagine a weary runner needing energy to reach the finish line. Signal boosters act similarly. They receive the weakened signal from your UAV, amplify it, and retransmit it to the ground control station, offering that extra push for a clear connection over longer distances. Relay Stations: Building Bridges for Data: Think of a relay race where teammates pass the baton. Relay stations act as data-carrying teammates for your UAV. Strategically placed relay stations receive the signal from your UAV, amplify it, and then forward it to the ground control station, effectively extending the range by creating a series of signal handoffs. Data Compression: Sending Less, Seeing More: Imagine packing a suitcase for a trip. You can fit more into a smaller space by choosing what to bring. Data compression works similarly. It reduces the amount of data your UAV transmits without sacrificing vital information. This "lighter" data package travels farther and uses less bandwidth, allowing for a stronger connection over longer distances. Choosing the Right Technique: A Balancing Act The best technique for extending your UAV's data link range depends on several factors, like your budget, the environment, and the type of data you're transmitting. Here's a quick guide: For Long-Range, High-Bandwidth Needs: Consider a combination of higher frequencies, directional antennas, and relay stations. Data compression and signal boosters might be the sweet spot for Moderate Range and Budgetary Constraints.  FAQs about UAV Data Link Range Extension: What's the maximum range I can achieve? There's no single answer. Range depends on the technique used, environment, and regulations. However, some systems can extend the range to tens of kilometers. Do these techniques affect flight time? Some techniques, like signal boosters, can consume additional power, potentially reducing flight time. What regulations govern data link range extension? Regulations vary by country. Always check with your local authorities before deploying any range extension technique. Unleashing the Full Potential of Your UAV Using these data link range extension techniques, you can transform your UAV from a tethered toy to a powerful data-gathering machine. So, the next time you have a mission that demands a broader reach, remember these tools and unleash the full potential of your drone!

Remember when a road trip meant wrestling with crumpled paper maps, squinting at tiny symbols, and arguing with your copilot about the next turn? Thankfully, those days are a distant memory. Today, a simple tap on your smartphone and bam! You're navigating unfamiliar territory with the confidence of a seasoned explorer. But have you ever stopped to ponder the silent hero behind this navigational revolution? Buckle up, space cadets, because we're about to blast off into the fascinating world of GNSS receivers! The GPS Galaxy: A Constellation of Guiding Stars Imagine a vast network of satellites orbiting Earth, constantly broadcasting invisible signals. These signals are like celestial breadcrumbs, guiding us through our journeys. GNSS, the Global Navigation Satellite System, is the mastermind behind this constellation of guiding stars. A tiny powerhouse—the GNSS receiver—is tucked away within your phone or GPS device. This unsung hero acts like a cosmic catcher, capturing and using these satellite signals to pinpoint your exact location on Earth. Unveiling the GNSS Receiver's Toolkit: From Antennas to Accuracy Think of a GNSS receiver as a high-tech detective agency with a specialized arsenal for its crucial mission: The Antenna: Your Signal Catcher: Imagine a baseball game. The antenna is like a catcher's mitt, but instead of catching a ball, it snags signals from orbiting satellites. The stronger and more precise the signal, the better! The Radio Frequency (RF) Front-End: Boosting the Message:  Picture a weak radio transmission. The RF front end acts like a signal booster, amplifying the strength and clarity of the captured satellite signals. Think of turning up the volume on a fuzzy radio station – that's what the RF front end does! The Digital Signal Processor (DSP): The Brains of the Operation: The DSP is this agency's mastermind detective. It analyzes the amplified signals meticulously, extracting crucial information like satellite location and timing. Using this information, the DSP calculates your position with impressive accuracy. The User Interface: Your Navigation Display:  Once the DSP has determined your location, the user interface takes center stage. This is typically the map app on your phone or a dedicated navigation system that displays your position on a digital map, helping you chart your course and avoid those pesky wrong turns. Accuracy Unlocked: The More Signals, the Merrier! The accuracy of your location fix depends on the number of satellites your receiver can "hear." Imagine a detective gathering information from witnesses – the more witnesses, the more reliable the picture they paint. Similarly, the more satellite signals your receiver picks up, the more accurate your location data becomes. While a basic fix typically requires signals from four satellites, utilizing more satellites provides even greater precision, narrowing down your position to a pinpoint on the map. The Science of Timing: Precision Lies in the Details The secret to a GNSS receiver's accuracy goes beyond simply picking up satellite signals. Satellites carry atomic clocks, the most accurate timekeeping devices on Earth. These clocks ensure that the signals they broadcast are perfectly timed. When your receiver captures a satellite signal, it measures the time it takes for that signal to arrive. By factoring in this time and the known location of the satellite, the DSP can calculate your position with remarkable accuracy. Think of it like a cosmic game of tag – the faster you "catch" the signal, the more precise your location data becomes! Beyond Navigation: A Multifaceted Tool While GNSS receivers excel at guiding you from point A to point B, their capabilities extend far beyond simple navigation: Super-Precise Timekeeping: GNSS receivers can provide highly accurate timekeeping by synchronizing onboard satellites with atomic clocks. This plays a crucial role in various applications, from ensuring the smooth operation of financial networks to maintaining internet stability. Imagine the chaos if all our computers and phones were a few seconds off—GNSS receivers help prevent that! Boosting Accuracy with Advanced Receivers:  Technology never sleeps, and GNSS receivers are no exception. Newer models boast improved signal reception capabilities and can connect with more satellites, resulting in more precise positioning data. Imagine navigating a dense forest – an advanced receiver would be like having a high-powered flashlight, cutting through the obstacles for a clearer picture. The Power of GNSS: Applications Across the Galaxy (and Beyond!) The versatility of GNSS receivers has led to their widespread adoption across various industries: Transportation Navigation:  From car GPS systems to sophisticated airplane navigation tools, GNSS plays a vital role in keeping us on the right track on land and in the air. Imagine a world without plane GPS – turbulence wouldn't be the only thing causing white.

When you deal in aerial applications, they become high-end applications. Lots of research and development are done on them. This process includes signal strength, data limit, and many aerial conditions. Controlling a UAV might be easy, but the backend procedure is not. Collecting data from aerial mode demands significant effort and resources. Then, one gets both discrete and continuous data on land. That could be in image, video, or any other mode.   You must select a perfect UAV data link system to get the best quality real-time information. If you are unaware of it, there is no need to panic. It is a system installed to collect the data recorded by a UAV from an aerial view. For instance, if you have a drone that you want to use to capture an aerial view of a place, that drone will collect data for you. Then, it will transmit that information to the data link system installed in the selected range. That’s how you will receive information from that drone on your computer or mobile screen through that data link system. Here is a simple guide to help you choose the right system for your application.  Purpose/Operation Type The first and primary factor is using a UAV data link system. There are many reasons, and you must have one for yourself. From aerial inspection for mapping to aerial attacks, there are many applications. They are suitable for data collection for land analysis, weather information, geographical analysis, etc. Survey and rescue operations are among the reasons people install UAV data link systems.   It would help if you decided whether you are doing it for research purposes, rescue operations, or military operations. Each operation type requires a different system regarding documentation, legality, and other operational factors. Range of Signals and Data Rate  Then, the range factor comes in terms of signals. As you know, different locations have different conditions. Not only locations but also applications rely on the range of signals. Some applications are possible only in the presence of high signals, and some manage to operate with low signals, too.   Then comes the data transmission rate, which results in the quality of content. Poor data rate can hinder image processing speed. If a UAV data link system can handle a high data transfer speed, the image and video quality will also be high. That will decide how good your image quality will be. If you use it for mapping or surveillance systems, you must select high image processing quality.   The reason is the data transfer from a UAV to a UAV data link system. If the data rate is high, the transfer time will be fast, and the image will have a higher quality. Pictures and video content will be processed quicker and more accurately.  Place of Installation and License  The place of installation is also a factor you will have to consider. You must choose that place carefully if dealing in a surveillance activity. Some areas require licensing for security reasons. If you install it for civil purposes, such as land analysis and mapping, there will be mild challenges.  Another reason besides license and security is the type of place. Some places are wide open, like terrains, and some are congested, like towns. For this reason, there will be a difference in data processing.  Resistance to Interference and Jamming  Terrain lands have higher wind speeds than towns. There are other reasons why environmental factors are essential to consider. Your UAV data link system will interfere with terrain levels and congested places. Since many cellular devices clutter cellular waves, they can interrupt your UAV data link system. These radio waves will create interruptions in the signal-receiving and transmission process.  Moreover, signal jammers will cause problems in some areas. Since some areas have restrictions for security or other reasons, you must consider this. If there is a lot of signal jamming, this factor will create problems for your device. If you are about to select a UAV data link system, it must resist jamming and interference from surroundings.  Weather Conditions  Then, the secondary factors come, which are related to weather. Most areas have scorching hot weather, while some places are covered with snow and have negative temperatures. You must select a UAV data link system to deal with such conditions. These weather conditions can affect the performance of your data collection system.   Moisture, storms, lightning, sun rays, heat, cold, and dust can create many challenges for your UAV data link system. So, you will have to decide its working conditions before selecting it. Resistance like this will keep the device active all the time. If your system can handle such a climate, it will likely perform at a high level. Budget Limit Then comes the last thing, which is the budget limit. After carefully choosing all the factors, you come to this last part. That is the purchasing power, which is linked to the price. If you go for custom production per the application type, you must be ready for it. However, many manufacturers in the industry not only produce A1 but also offer discounted prices.  Conclusion  You can find manufacturers on a B2B website or through a search engine. There are many ways available, so you will get lots of varieties. These are how one can find a supplier who provides all the above features.