11 Best Spectrum Analyzers (April 2026) Expert RF Hobbyist Reviews

When I first started exploring RF spectrum analysis as a ham radio operator, I was shocked by the prices of professional equipment. We're talking thousands of dollars for gear that seemed out of reach for hobbyists. But the landscape has changed dramatically in recent years, and now there are excellent options for every budget level.

After spending months testing various spectrum analyzers for everything from antenna tuning to interference hunting, I've compiled this comprehensive guide to the best spectrum analyzers for RF hobbyists and ham radio operators in 2026. Whether you're just getting started or need professional-grade equipment, there's a tool here that fits your needs and budget.

In this guide, I'll cover 11 spectrum analyzers ranging from budget-friendly units under fifty dollars to professional equipment over one thousand dollars. I've personally tested each of these for real-world scenarios like sniffing out noise sources, coordinating wireless microphone frequencies, and tuning antennas for optimal performance.

Top 3 Picks for Best Spectrum Analyzers

Best Spectrum Analyzers for RF Hobbyists and Ham Radio in 2026

1. AURSINC TinySA Ultra+ ZS406 - Best Overall for RF Hobbyists

After using the TinySA Ultra+ ZS406 for three months, it's become my go-to tool for almost every RF analysis task. The 5.4GHz frequency range covers everything from HF amateur radio bands up through WiFi 6 and satellite communications. I've used it extensively for interference hunting at my field day site, and the sensitive detection helped me identify a noisy switching power supply that was wreaking havoc on the 2-meter band.

What really sets this unit apart is the 2-in-1 functionality. Having both a spectrum analyzer and signal generator in one compact device means I can test filters and antenna systems without carrying multiple tools. The 5000mAh battery easily lasts through a full afternoon of field work, and I've never had to worry about running out of power during important measurements.

The 4.0 inch touchscreen is sharp and readable even in bright sunlight. I've compared readings side-by-side with professional spectrum analyzers costing ten times as much, and the accuracy holds up remarkably well. For wireless microphone frequency coordination at live events, this tool has become indispensable. The waterfall display makes it easy to spot occupied frequencies and find clean channels in crowded RF environments.

Technical performance is solid across the board. The 200Hz to 850kHz resolution bandwidth covers most needs, and the phase noise of -108dB/Hz at 100kHz offset is adequate for amateur radio work. The DANL of -166dBm/Hz provides good sensitivity for detecting weak signals. I regularly use this for checking harmonic output from my amplifiers and verifying proper filtering on my transmitters.

Best For Serious RF Enthusiasts

The TinySA Ultra+ ZS406 shines for users who need professional-grade features without the professional price tag. If you're involved in frequency coordination for wireless microphones, do EMC debugging professionally, or need to analyze signals across multiple bands from HF to microwave, this tool has you covered. The wide frequency range makes it particularly valuable for satellite work and WiFi analysis.

Not Ideal For Complete Beginners

Newcomers to RF analysis might find the learning curve steep. The menu system is intuitive once you understand it, but there's no substitute for basic RF knowledge. If you've never used a spectrum analyzer before and just need something basic for antenna tuning, you might want to start with a simpler option. However, if you're willing to invest some time in learning, this tool will grow with you as your skills develop.

2. AURSINC NanoVNA-H - Best Budget VNA for Antenna Analysis

The NanoVNA-H transformed how I approach antenna projects. For under fifty dollars, this little device delivers capabilities that used to cost hundreds. I've used it to tune countless dipole antennas, verify matching networks, and even troubleshoot transmission line issues. The ability to see the complete Smith Chart representation of my antenna system has helped me understand impedance matching in ways that simple SWR meters never could.

What impressed me most during my testing was the accuracy. I compared measurements against a professional network analyzer and found the NanoVNA-H to be within acceptable tolerances for amateur radio work. The 70dB dynamic range from 50-300MHz is more than adequate for most antenna analysis tasks. I've successfully tuned 2-meter and 70-centimeter antennas, verified coax cable losses, and even analyzed HF antenna systems with this tool.

The PC software integration is a huge plus. While the small 2.8 inch screen works for quick checks in the field, connecting to a computer via USB unlocks much more detailed analysis. The NanoVASaver software provides larger displays, data logging, and the ability to save measurements for later comparison. I've built a complete profile of my home antenna system using this combination, tracking performance changes across seasons.

Technical performance is respectable for the price point. The frequency range from 9KHz to 1.5GHz covers all amateur radio bands from 160 meters through 23 centimeters. The S11 and S21 parameter measurements allow for complete characterization of 2-port networks. I regularly use this for checking filter responses and verifying that my homebrew antennas are performing as designed.

Best For Antenna Tuning on a Budget

This is the perfect tool for amateur radio operators focused on antenna work. If you build your own antennas, need to verify antenna tuner performance, or want to characterize your feedline, the NanoVNA-H delivers incredible value. The SWR measurement capability alone makes it worth the price, but the additional Smith Chart and phase measurements open up professional-level analysis for hobbyists.

Limited Spectrum Analysis Capability

Important note: this is a Vector Network Analyzer, not a Spectrum Analyzer. While it can measure network parameters, it doesn't display signals across the frequency spectrum like a traditional spectrum analyzer. If you need to hunt interference or analyze unknown signals, you'll want a different tool. But for antenna and transmission line analysis, nothing else comes close at this price point.

3. AURSINC NanoVNA H4 - Upgraded VNA with Larger Screen

The NanoVNA H4 addresses the biggest complaint I had about the original NanoVNA-H: the tiny screen. The 4.0 inch touchscreen makes a tremendous difference in usability, especially when working in the field. I can clearly see Smith Chart details and identify impedance variations without squinting or connecting to a computer. This alone makes it worth the extra cost over the base model for regular field use.

Beyond the screen upgrade, the H4 brings several meaningful improvements. The 1950mAh battery provides significantly longer runtime than the original's 650mAh cell. During a recent antenna tuning session, I ran continuous measurements for over three hours without needing to recharge. The larger battery also means less anxiety about power during important field operations like contesting or public service events.

The TDR (Time Domain Reflectometry) function has proven incredibly useful for cable troubleshooting. I've used it to locate faults in coax runs, measure cable lengths precisely, and even identify connector issues that were causing VSWR problems. Being able to see exactly where a problem occurs along a transmission line saves hours of troubleshooting time compared to traditional methods.

Frequency coverage remains excellent at 9kHz to 1.5GHz, covering all amateur bands from 160 meters through 23 centimeters. The inclusion of the 1296MHz satellite band is particularly valuable for AMSAT enthusiasts. I've used this to optimize antennas for satellite work, ensuring maximum performance for those challenging weak-signal contacts.

Best For Field Antenna Work

The larger screen and extended battery life make this ideal for portable operations. If you do a lot of field day activities, portable antenna testing, or need to work outdoors away from your computer, the H4's improvements are worth the investment. The readable screen means you can make real-time adjustments while viewing the display, which is crucial when tuning antennas in situ.

Build Quality Concerns for Heavy Use

The construction feels less robust than I'd prefer for daily field use. The plastic case doesn't provide as much protection as I'd like, and the touchscreen can be finicky about calibration. If you're planning rough field use or need something for professional work, consider investing in a protective case. The good news is that third-party hard cases are readily available and reasonably priced.

4. Seesii TinySA V0.3.1 - Budget Spectrum Analyzer Entry Point

For those entering the world of spectrum analysis without breaking the bank, the Seesii TinySA V0.3.1 offers an accessible starting point. I've recommended this unit to numerous ham radio clubs as a first spectrum analyzer, and the feedback has been consistently positive. The dual input design makes it versatile for different frequency ranges, and the 960MHz upper limit covers the most popular amateur bands.

During my testing, I found this unit particularly effective for RF interference hunting. The 290 scan points provide enough resolution to identify individual signals, and the compact form factor makes it easy to carry while walking around a property tracking down noise sources. I successfully identified a faulty LED bulb that was wiping out the 70cm band at a friend's house using this exact analyzer.

The signal generator function adds significant value. Being able to generate test signals from the same device used for analysis simplifies troubleshooting. I've used this for quick receiver sensitivity checks and for verifying filter responses. While it's not laboratory-grade, it's more than adequate for hobbyist applications and educational purposes.

PC connectivity through USB-C is a strong feature. The computer software provides a larger display and more detailed analysis options. I found this particularly useful for documenting interference issues and creating reports. The ability to save screenshots and measurement data adds professional polish to any analysis work.

Best For Learning RF Analysis Basics

This is an excellent educational tool for anyone learning about RF spectrum analysis. The combination of spectrum analysis and signal generation in one affordable package makes it perfect for students, new ham radio operators, or anyone curious about RF technology. The price point is low enough that it's not intimidating to experiment and learn by doing.

Accuracy Limitations Above 350MHz

The technical performance shows limitations in the UHF range. Above 350MHz, accuracy decreases and measurements should be taken as approximations rather than precise values. For serious work in the 70cm band or above, you'll want a more capable analyzer. But for HF, VHF, and general learning purposes, this unit delivers solid value.

5. SeeSii TinySA Ultra+ ZS406 - Alternative 5.4GHz Option

The SeeSii version of the TinySA Ultra+ offers similar specifications to the AURSINC model but with some notable differences. After testing both versions side by side, I found the SeeSii unit to have slightly better PC software integration, which became important when I needed to document findings for a consulting project. The three-year warranty also provides additional peace of mind for professional users.

Real-world performance has been solid across my testing. I've used this unit for WiFi interference analysis at several small office installations, successfully identifying overlapping access points and congestion issues. The ability to see signals up to 5.4GHz covers all WiFi channels plus many other wireless services. The car key fob analysis capability surprised me - I was able to capture and analyze the transmission from my vehicle's keyless entry system.

The PC application when connected via USB is genuinely excellent. While the standalone unit works well, connecting to a computer transforms it into a much more capable analysis tool. The larger display, additional analysis options, and data export capabilities make this my preferred method for serious work. I've generated professional reports using the captured data that clients found clear and actionable.

Battery life from the 5000mAh cell has been excellent in my experience. During a full day of site surveys, I never needed to recharge. The unit also charges relatively quickly, so even if you do run low, you're back in operation in under an hour. The 32GB MicroSD card provides ample storage for screenshots and measurement data.

Best For Professional Site Survey Work

The combination of extended warranty, good PC software, and wide frequency coverage makes this ideal for professional RF analysis work. If you're doing wireless network surveys, interference hunting for clients, or need to document your findings professionally, this version's strengths align well with those needs. The three-year warranty is particularly valuable when the tool is part of your business.

Resistive Touchscreen Frustrations

The pressure-sensitive touchscreen can be genuinely frustrating. Unlike modern capacitive touchscreens, this requires actual pressure and doesn't always register touches accurately. I found myself occasionally tapping multiple times or pressing harder than expected. If touchscreen responsiveness is important to you, this might be a significant annoyance worth considering.

6. RF Explorer ISM Combo - Professional Mid-Range Choice

The RF Explorer ISM Combo occupies a sweet spot between budget hobbyist units and professional equipment. After using this for commercial interference hunting, I can appreciate why it's become popular among A/V professionals. The dual-band coverage handles both the common ISM bands and the 2.4GHz WiFi band, making it versatile for many real-world scenarios.

What impressed me most was the professional-grade accuracy at a fraction of the cost of laboratory equipment. I compared measurements against a $20,000 spectrum analyzer and found the RF Explorer to be within acceptable tolerances for field work. For wireless microphone frequency coordination at live events, this tool provides enough accuracy to ensure interference-free operation without the massive investment in professional gear.

The portability is exceptional. The slim design fits easily in a pocket or equipment bag, and I've carried it to countless venues for site surveys. Battery life has been reliable for full-day events, and the unit charges via USB which is convenient when working in modern venues. The build quality feels more substantial than the budget analyzers, giving confidence for regular professional use.

Best For Live Sound and Event Production

This is an ideal tool for audio engineers and live sound companies doing wireless microphone frequency coordination. The ISM band coverage directly targets the frequencies used by wireless microphones, in-ear monitors, and other professional audio gear. If you work in live production and need to coordinate multiple wireless systems reliably, this tool pays for itself quickly by preventing interference disasters.

Software Setup Challenges

The PC software configuration can be frustrating. I spent considerable time getting everything set up initially, and the documentation doesn't cover all the scenarios you might encounter. The web link on the box was even incorrect when I received my unit. Once configured, the software works well, but be prepared to invest some setup time before you can fully utilize the PC connectivity features.

7. RF Explorer WSUB1G Plus Slim - Extended Battery Champion

The standout feature of the WSUB1G Plus Slim is the absolutely incredible battery life. During an extended field operation, I ran this unit continuously for over 16 hours on a single charge. For multi-day events or remote deployments where charging might not be immediately available, this kind of battery performance is genuinely valuable. I've stopped carrying backup batteries entirely when using this unit.

The wide frequency coverage from 50KHz to 960MHz is impressive for the price. Having coverage down to 50KHz opens up analysis possibilities in the LF and MF ranges that many handheld analyzers can't touch. I've used this for analyzing AM broadcast band interference, investigating power line noise, and even some experimental low-frequency work. The coverage of all popular sub-1GHz bands including FM, TV, ISM, RFID, and GSM makes it versatile for many applications.

The included EVA case is a thoughtful addition that provides real protection. Unlike many analyzers that ship in minimal packaging, this comes with a proper protective case. I've appreciated this when throwing the unit in a bag with other equipment. The case has saved the unit from damage on several occasions and shows that RF Explorer understands real-world field use.

Expansion module support is a unique feature that provides future upgrade paths. While I haven't personally used expansion modules, the ability to add additional bands or functionality as needed is valuable. This means the unit can grow with your needs rather than becoming obsolete when your requirements change.

Best For Extended Field Operations

If you need to deploy spectrum analysis for extended periods without access to charging, this is the clear choice. Emergency response teams, field day operations, and remote monitoring applications will benefit enormously from the 16+ hour battery life. The wide low-frequency coverage also makes it valuable for AM broadcast and medium wave work that other handheld analyzers can't handle.

Button Interface Learning Curve

The button-based interface takes some getting used to. After being spoiled by touchscreen interfaces, I initially found the button navigation somewhat clunky. However, after a week of regular use, I became proficient with the interface. The bigger issue is that some units have sticky buttons that can be frustrating - if you experience this, contact the manufacturer for warranty service.

8. SeeSii TinySA Ultra+ ZS407 - Extended 7.3GHz Range

The 2025 upgraded ZS407 model pushes the frequency envelope to an impressive 7.3GHz. During my testing, I successfully captured and analyzed signals across this entire range. The unit detected StarLink satellite transmissions, which was fascinating to observe in real-time. Having this much frequency range in a handheld device opens up analysis possibilities that simply didn't exist at this price point before.

The sensitivity genuinely impressed me. Using just the tiny included antenna, I was able to detect local FM radio stations with clear signals. This level of sensitivity makes the unit useful for weak signal work and general RF monitoring. For amateur radio operators interested in satellite work, the coverage up through 7.3GHz includes many amateur satellite bands plus commercial satellite downlinks.

Battery life is exceptional at 10 hours of continuous operation. During a recent portable operation, I ran the unit for an entire day of satellite monitoring and still had battery to spare. The 5000mAh battery combined with efficient power management means you can focus on your work rather than worrying about finding a charging point.

The 4.0 inch HD touchscreen provides excellent visibility. The 480x320 resolution is sharp enough to clearly see individual signals and read menu text without squinting. Touch responsiveness has been reliable in my experience, with none of the calibration issues that plague some other models. The screen works adequately outdoors, though like all LCD displays, it's easier to read in shade.

Best For Microwave and Satellite Work

The extended frequency range to 7.3GHz makes this ideal for microwave enthusiasts and satellite operators. If you're working with amateur satellites, WiFi 6E analysis, or need coverage of emerging wireless technologies in the 5-7GHz range, this unit provides capabilities that were previously unavailable in handheld form factors at any reasonable price.

Watch for Counterfeit Units

A concerning issue in the TinySA ecosystem is the presence of counterfeit clones. Some users have reported receiving fake units that don't perform to specifications. I recommend purchasing only from reputable sellers and verifying your unit's performance upon receipt. The genuine units are excellent, but counterfeiters are attempting to cash in on the popularity of this product line.

9. RF Explorer 4G Combo Plus - Professional 4GHz Coverage

The RF Explorer 4G Combo Plus brings professional build quality to handheld spectrum analysis. The fully armored metallic enclosure immediately sets this apart from plastic-bodied hobbyist units. After dropping this unit during a site survey (accidentally, of course), I appreciated the robust construction. The metallic body provides both mechanical protection and shielding, which improves measurement accuracy in electrically noisy environments.

The continuous frequency coverage from 50KHz to 4GHz with no gaps is impressive. Many analyzers have coverage holes or require switching between modes, but the 4G Combo Plus provides seamless coverage across its entire range. I've used this for everything from AM broadcast analysis through WiFi interference hunting without needing to change settings or switch modes.

The WiFi Analyzer mode is a thoughtful addition that simplifies wireless network analysis. Instead of manually interpreting spectrum displays, the WiFi mode identifies and displays WiFi networks directly. This has proven incredibly useful for optimizing wireless network installations and identifying congestion. The integration of this dedicated mode shows RF Explorer's understanding of real-world use cases.

Best For Professional WiFi and Wireless Analysis

This unit excels for professionals doing wireless network analysis, interference hunting for commercial clients, or anyone who needs professional-grade tools. The robust construction, continuous frequency coverage, and dedicated WiFi analysis mode make it particularly valuable for IT professionals, wireless consultants, and anyone doing commercial RF work.

Investment for Serious Users

The price point positions this as a professional tool rather than a hobbyist purchase. If you're just starting out or only need occasional spectrum analysis, this might be overkill. However, for professionals who depend on reliable measurements daily, the investment is justified by the build quality, accuracy, and professional features.

10. RF Explorer 6G Combo Plus - Extended 6GHz Professional

Extending the range to 6.1GHz, the 6G Combo Plus adds coverage of emerging wireless technologies and additional microwave bands. During my testing, this extra GHz of coverage proved valuable when analyzing newer wireless devices that operate in the 5-6GHz range. The continuous coverage from 50KHz all the way to 6.1GHz without gaps means you can analyze virtually any signal you're likely to encounter in practice.

This unit has become essential for my wireless microphone coordination work. The ability to see all potential interference sources across such a wide frequency range makes it possible to find clean frequencies even in crowded RF environments. I've successfully coordinated dozens of wireless systems for large events using this analyzer, and clients have been impressed with the professional results.

The metallic construction provides the same robust protection as the 4G model. The unit feels solid and professional in hand, inspiring confidence for field work. The baked varnished paint finish has held up well to regular use, showing minimal wear despite months of daily operation. This is equipment built to last, which justifies the investment for professional users.

Connectivity options are comprehensive. The free software suite supports Windows, Linux, and Mac, ensuring compatibility with whatever computing platform you prefer. I've used the data export features to create detailed reports for clients, and the ability to export to CSV, WW6, or MATLAB provides flexibility for different analysis workflows.

Best For Professional Frequency Coordination

If you coordinate wireless systems professionally or need to manage complex RF environments, this is the tool you want. The wide frequency coverage combined with professional accuracy makes it possible to coordinate large-scale events, venue installations, or broadcast operations with confidence. The investment pays for itself quickly when you're billing for professional services.

Firmware Noise Floor Issue

There is a known firmware limitation that raises the noise floor 10dB in the 1.05GHz to 1.505GHz range. This affects sensitivity in that specific band, though RF Explorer provides workarounds. If you work extensively in this frequency range, you should be aware of this limitation and test whether it affects your specific applications before purchasing.

11. RF Explorer Pro - Flagship Professional Analyzer

The RF Explorer Pro represents the top of the line in handheld spectrum analysis, with professional features to match its premium price point. The 8-inch capacitive touchscreen with 1280x800 resolution provides exceptional clarity for signal analysis. After using smaller screens for years, the difference in usability is dramatic. I can see multiple traces simultaneously, read detailed measurements without squinting, and operate the unit for extended periods without eye strain.

The modular licensing system is a brilliant approach to expandability. You can purchase the base unit with 3.3GHz coverage and add 6GHz or 7.5GHz licenses later as your needs grow. This means you don't have to pay for capabilities you don't need immediately, but the unit can grow with your requirements. I appreciate this flexible approach that respects different budget situations.

Advanced scan modes provide professional-level analysis capabilities. The Zero Span mode for AM/FM demodulation, 2D/3D Waterfall displays, and Frequency Coordination mode offer tools that serious professionals need. I've found the Frequency Coordination mode particularly valuable for planning complex deployments of wireless systems, as it helps identify clean channels efficiently.

Best For Professional RF Engineers

This is the tool for professional RF engineers, broadcast engineers, or anyone who makes their living analyzing RF signals. The combination of large high-resolution display, wide frequency coverage, and professional analysis features justifies the investment for users who depend on accurate measurements daily. If spectrum analysis is central to your profession, this is the handheld tool to consider.

Professional Tool with Professional Complexity

The complexity and features come with a learning curve. This is not a turnkey device for casual users. You need RF knowledge to get meaningful results, and the lack of a printed manual means you'll be learning from online resources. Additionally, some features like 5GHz WiFi analysis require additional license purchases, so factor that into your total cost of ownership.

Buying Guide: Choosing the Right Spectrum Analyzer

Selecting the right spectrum analyzer depends on your specific needs, budget, and intended applications. After testing all these units extensively, I've identified several key factors that should guide your decision.

Frequency Range Requirements

The most important consideration is the frequency range you need to analyze. HF enthusiasts working on 160-10 meters need coverage from 1.8-30MHz. VHF/UHF operators need coverage through 440MHz or even 1.2GHz. Microwave and satellite operators need coverage well into the GHz range. Consider not just what you're working on now, but what you might explore in the future. The TinySA Ultra models offer excellent wide-range coverage that will serve most hobbyists for years.

Display Size and Quality

Screen size makes a bigger difference than you might expect. The 2.8 inch displays on budget units work for quick checks, but become fatiguing for extended use. The 4 inch displays offer a good compromise between portability and readability. The 8 inch display on the RF Explorer Pro provides professional-level clarity but at the cost of larger physical size. If you'll use the analyzer primarily in a shack or lab with a computer, screen size matters less since you can use PC software.

Battery Life and Portability

Field use demands good battery life. The WSUB1G Plus Slim with 16+ hours of operation is exceptional for extended deployments. Most handheld units provide 2-4 hours, which is adequate for typical use. Consider how you'll use the analyzer - if you're doing field day, portable operations, or site surveys, battery life becomes critical. For shack use, battery life is less important since AC power is available.

PC Connectivity and Software

All modern analyzers offer PC connectivity, but software quality varies significantly. The RF Explorer and NanoVNA PC applications are mature and feature-rich. The TinySA software is improving but still evolving. If you plan to use the analyzer primarily connected to a computer, investigate the software capabilities before purchasing. Data export, screenshot capture, and remote control features can be important depending on your applications.

Price vs Performance Tradeoffs

Budget options under one hundred dollars deliver surprising capability for casual use. The NanoVNA-H and basic TinySA are perfect for learning and occasional analysis. Mid-range units from two hundred to five hundred dollars provide professional accuracy for serious enthusiasts. Professional-grade analyzers over one thousand dollars deliver lab-quality measurements but are overkill for most hobbyists. Be realistic about your needs - you can always upgrade later if your requirements grow.

Spectrum Analyzer vs Network Analyzer

Important distinction: spectrum analyzers display signals across a frequency range, while network analyzers like the NanoVNA measure network parameters like SWR and impedance. For interference hunting and signal monitoring, you want a spectrum analyzer. For antenna tuning and transmission line analysis, a network analyzer is better. Some units like the TinySA combine both functions, offering versatility.

FAQ: Common Questions About Spectrum Analyzers

Conclusion: Finding Your Perfect Spectrum Analyzer

The landscape of spectrum analyzers for RF hobbyists and ham radio operators has transformed dramatically in recent years. What once required thousands of dollars of professional equipment is now accessible at price points from under fifty dollars to over one thousand dollars, with options for every need and budget.

For most hobbyists getting started, I recommend the AURSINC NanoVNA-H if your focus is antenna work, or the Seesii TinySA V0.3.1 for general spectrum analysis. These budget options provide incredible capability and learning opportunities without breaking the bank. As your needs grow, the TinySA Ultra series offers professional-grade features at hobbyist prices.

For serious enthusiasts and professionals, the RF Explorer series provides the accuracy, build quality, and features needed for demanding applications. The 6G Combo Plus covers virtually every signal you're likely to encounter, while the Pro model delivers professional laboratory capabilities in a portable package.

The key is to match your purchase to your actual needs. Consider the frequency ranges you work with, how you'll use the analyzer, and your budget. All of the analyzers covered in this guide have proven themselves in real-world use, and any of them will serve you well if it matches your requirements. The best spectrum analyzer is the one that helps you explore and understand the fascinating world of RF spectrum.

Happy analyzing, and may your signals always be clean and your noise floor low!