This brand new compact 7.3 GHz spectrum analyzer packs some serious capability into a handheld device, making it perfect for both field work and bench testing.
The 4-inch touchscreen display is crisp and responsive, showing up to 450 scan points that help me visualize complex signals clearly. The wide frequency range (100 kHz to 7.3 GHz) especially useful for working with everything from amateur radio to modern wireless communications.
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What I really appreciate is the dual functionality as both an analyzer and signal generator. This 2-in-1 capability saves me from needing separate devices for testing and troubleshooting. The built-in LNA and attenuator help adapt to different signal strengths – essential when working across varied environments.
Bottom Line
If you need a portable, capable spectrum analyzer with signal generation features, the TinySA Ultra+ is worth every penny.
Its broad frequency coverage and intuitive interface make it suitable for both hobbyists and professionals.
Table of Contents
Seesii TinySA Ultra+ : An Overview
I’m impressed with what this compact spectrum analyzer offers. The Ultra+ handles frequencies from 100 kHz all the way up to 7.3 GHz, making it perfect for working with everything from amateur radio to 5G signals.
✨ This represents a significant upgrade from last year’s 5.4 GHz version
The 4-inch touchscreen is remarkably clear and responsive. I found navigating through the interface intuitive, even when working with complex signal analysis. The device’s dual functionality as both a spectrum analyzer and signal generator (100 kHz – 900 MHz) gives it versatile applications in my testing workflow.
Battery life is excellent – nearly 10 hours from a single charge of the 5000 mAh battery. This makes the TinySA perfect for field work where power outlets aren’t available.
The built-in LNA (Low Noise Amplifier) and attenuator help with analyzing both weak and strong signals. I especially appreciate the low phase noise performance, which makes precise measurements possible.
While compact, this isn’t a toy – it’s a serious tool for RF analysis at a fraction of the cost of professional bench equipment.
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Key Features
The TinySA Ultra+ impressed me with its combination of portability and professional-grade functionality. I found these features particularly noteworthy:
Ultra-Wide Frequency Range
The frequency range on this device is truly impressive – 100 kHz to 7.3 GHz. This range covers everything from amateur radio bands to 5G NR and Wi-Fi 6E frequencies. What’s particularly useful is that it’s calibrated up to 8GHz, which gave me flexibility for lab testing.
The Standard mode (100 kHz – 800 MHz) works great for basic RF analysis, while ULTRA mode extends capabilities up to 7.3 GHz for more demanding applications. The 200 Hz–850 kHz RBW (Resolution Bandwidth) is excellent for detailed signal analysis, especially when I needed to perform SSB two-tone intermodulation tests.
Dual Functionality
I love tools that serve multiple purposes, and the TinySA Ultra+ delivers here. It functions as both a spectrum analyzer and a signal generator. The signal generation capabilities can produce clean MF/HF/VHF sine waves from 100 kHz to 900 MHz during my testing.
It also generates UHF square waves from 800 MHz to 6.3 GHz and mixed signals from 4.4 GHz to 6.3 GHz. This dual functionality saves users from carrying multiple devices when troubleshooting RF systems in the field. It’s particularly helpful when testing antenna installations and identifying interference sources.
Intuitive HD Touchscreen
The 4-inch HD touchscreen is a standout feature. With 480×320 resolution, complex spectrum data can be clearly viewed without squinting. The display supports up to 450 scan points, which I found more than adequate for detailed analysis.
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Touch response is accurate and the interface is intuitive— the manual does not need to be consulted after initial setup. The included stylus pen helps with precision when selecting narrow frequency ranges or adjusting settings. Overall, the screen makes this device much easier to use than older analyzers with basic LCD displays I’ve worked with.
Extended Battery Life
Battery performance exceeds my expectations. The built-in 5000mAh rechargeable battery is able to consistently deliver around 10 hours of operation. This means I can work through an entire day in the field without worrying about recharging.
For comparison, many competing portable analyzers I’ve used run for 4-6 hours at most. Used analyzers that might cost less run for even less time.
The device also maintains consistent performance as the battery depletes, with no noticeable drop in measurement accuracy or display brightness until it’s nearly empty.
Connectivity and Storage Solutions
The TinySA Ultra+ offers excellent connectivity options. I connected it to my PC via USB and used the TinySA-APP for real-time data monitoring and transfer. This setup works seamlessly for longer monitoring sessions and detailed analysis.
The included 32GB MicroSD card provides ample storage for saving spectrum scans and measurement data. I particularly appreciated this when working at remote sites, allowing me to capture and later analyze complex RF environments without needing a laptop in the field. The data transfer is quick and the file format is compatible with standard analysis software.
Pros and Cons
After spending considerable time testing this portable spectrum analyzer, I can share my honest assessment of what works well and what doesn’t with the SeeSii TinySA Ultra+. This compact device has surprised me in several ways during my testing.
Pros
- Impressive frequency range from 100 kHz to 7.3 GHz, which I found perfect for various RF applications including 5G and Wi-Fi 6E testing
- Dual functionality as both a spectrum analyzer and signal generator saved me from carrying multiple devices
- 4-inch touchscreen with 480×320 resolution provides clear visualization of spectrum data
- Excellent battery life with the 5000 mAh battery lasting me through an entire workday
- PC connectivity options made transferring and analyzing data much more convenient
- Included accessories are comprehensive – the SMA cables, antenna, and 32GB MicroSD card meant I didn’t need to purchase extras
Cons
- Learning curve for beginners – I needed time to understand all features despite the touchscreen interface
- Limited RBW options in certain frequency ranges compared to professional lab equipment
- Touchscreen sensitivity could be improved – I often found myself using the included stylus instead of my finger
- Size is compact but still bulkier than some might expect for a “tiny” analyzer
- USB-C port feels slightly fragile when connecting cables repeatedly
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Hands-On Experience
I’m impressed by the TinySA Ultra+’s portability and functionality. The 4-inch display is surprisingly clear, making spectrum readings easy to interpret even in different lighting conditions. The interface is intuitive — navigate through different frequency ranges without consulting the manual.
The device feels solid despite its compact size. Battery life holds up well, lasting about 4 hours of continuous use. When analyzing signals from my ham radio equipment, the spectrum traces were responsive with minimal lag.
I particularly appreciated the dual functionality as both an analyzer and signal generator. Switching between these modes is straightforward. One drawback I noticed was occasional sensitivity issues when working with very weak signals below -90 dBm, though this is expected given its size and price point.
Customer Reviews
Looking at the community feedback for the TinySA Ultra+, I’m noticing a surprising lack of reviews available for this upgraded 2025 model. This 7.3GHz spectrum analyzer has just hit the market, which explains why customer feedback is still limited.
As more users get their hands on this device, I expect reviews to start appearing soon.
Conclusion
The TinySA Ultra+ is a valuable tool for RF testing and analysis. This compact spectrum analyzer delivers impressive performance for its size and price point.
The 4-inch display is clear enough for field work, and the expanded frequency range up to 7.3GHz covers most applications I encounter. The built-in signal generator adds versatility, though I wish it extended beyond 900MHz.
Battery life is adequate for short field sessions, but keep the USB cable handy for longer projects. While not replacing professional-grade equipment costing thousands more, the Ultra+ hits a sweet spot for hobbyists, HAM operators, and technicians needing portable RF analysis.
For anyone working with wireless systems who needs an affordable, portable spectrum analyzer, the TinySA Ultra+ is worth serious consideration despite its few limitations.
