AURSINC Ultra TinySA 4 Inch Spectrum Analyzer Portable V0.4.5.1 100kHz-5.3GHz Frequency Analyzer | Built-in 3000mAh Battery & 32GB SD Card PC Control RBW LNA DANL Phase Noise RF Signal Generator

5-Star Review – AURSINC TinySA Ultra+ ZS406 Spectrum Analyzer Alright, let me just say—this little device punches way above its weight class. The TinySA Ultra+ ZS406 has completely surprised me in the best way possible. I gave it 5 stars, and here’s why: Ease of Use Right out of the box, this thing is ridiculously intuitive. The menu layout is straightforward, no guesswork, no hunting through layers of submenus. I was up and scanning signals in minutes—without needing to crack open a manual or hit YouTube. It just works. If you've got even a basic grasp of signal analysis, this will feel like second nature. If you're a beginner? It won't take long to get comfortable. Readability The screen is sharp, bright, and legible even in less-than-ideal lighting. The data presentation is clean—no clutter, no nonsense. Colors pop just enough to give clarity without distracting from what you're actually trying to see. Whether you're doing quick scans or locking onto a signal for detailed inspection, you're not going to be squinting or second-guessing. Consistent, Clear Readings This is where it earns serious respect. The readings are not only accurate, but repeatably accurate. No weird drift, no jittery signal noise that shouldn’t be there. Whether I'm monitoring RF noise in my workspace, checking transmitters, or just scanning for fun, the TinySA Ultra+ gives me consistent, reliable results every time. It’s fast, responsive, and most importantly—trustworthy. Final Word If you're on the fence about this unit—don’t be. Whether you're a hobbyist, a radio nerd, or someone who just needs to get clean spectrum data without a thousand-dollar rig, this is it. Compact, powerful, and polished. Solid 5/5. Absolutely worth it.

What an amazing compact device! Very well made and portable spectrum analyzer. Noise level measurement and frequency / bandwidth adjustment adequate for most uses. Battery capacity is good. Construction grade is very good. Has internal LNA or can alternately be paired with external LNA for various bands. Use with PC applications which can both control and record analysis. Get an authorized unit like these sold by this dealer.

A nifty gadget that performs well. Used this analyzer to configure the channels on my wifi router and it worked well.

So far works great. Bought to check levels on FM signal generators used to service vintage receivers. Fairley easy to use and doesn't take up a lot of space on my work bench.

What you get in this small portable instrument is absolutely amazing for RF testing and analyzing signals. A great addition to any radio workshop.