Portable spectrum analyzers let you see RF signal activity without hauling a benchtop unit to the project. The TinySA family covers a wide price and capability spread, and the main decision is how much frequency range and display real estate you need. The four models here range from a compact analyzer for everyday RF signal checks to wideband units for higher-frequency work.
Quick take
The group spans from USD 59.00 to USD 236.42, with the two ZS407 models at the upper end. The compact 2.8-inch TinySA is the entry point for HF/VHF/UHF work. The Ultra+ ZS406 adds a touchscreen and a 5.4GHz top range. The two Ultra+ ZS407 listings are the extended-range options.
Listed price comparison
| Model | Listed price | Price bar |
|---|---|---|
| Upgraded Tiny Spectrum Analyzer TinySA 2.8in Display 100KHz-960MHz with Battery | USD 59.00 | |
| TinySA Ultra+ ZS406 Spectrum Analyzer 100kHz-5.4GHz 4-inch, 2-in-1 Signal Generator | USD 179.00 | |
| TinySA Ultra+ ZS407 Spectrum Analyzer Signal Generator 4-inch 100kHz-7.3GHz +32GB | USD 229.00 | |
| 4-inch TinySA Ultra+ ZS407 100kHz-7.3GHz Spectrum Analyzer RF Signal Generator 32GB | USD 236.42 |
Decision matrix
| If you need... | Consider... |
|---|---|
| A compact analyzer for basic RF signal checks | Upgraded Tiny Spectrum Analyzer TinySA 2.8in |
| A larger display and gigahertz range with a signal generator | TinySA Ultra+ ZS406 |
| Wideband coverage with an LNA/attenuator and storage card | Either ZS407 model |
| A specific RF signal generator title with the ZS407 feature set | TinySA Ultra+ ZS407 RF Signal Generator |
Product notes
Upgraded Tiny Spectrum Analyzer
This is the only model with the compact LCD in the group. The listed frequency range is 100kHz to 350MHz and 240MHz to 960MHz, with a lower-quality UHF input noted in the description. The unit also can act as a signal generator on the low band, with sinus output from 0.1MHz to 350MHz and a square wave output for UHF, according to the listing. The trade-off is the smaller display and the 960MHz ceiling. If your projects stay in the HF/VHF range or you just need a battery-powered analyzer for basic signal checks, this keeps the footprint small and the scope simple.
TinySA Ultra+ ZS406
With a 4-inch TFT display and a 5000mAh battery, this model is a clear step up from the compact unit. The listed range covers HF, VHF, UHF, and well into microwave territory, and the 2-in-1 signal generator lets you produce test tones from the same handheld package. The sensitivity figures show the trade-off: DANL degrades in ultra mode above 2.5GHz and by 25dB above 5.3GHz, so the highest bands come with reduced sensitivity. If your signal hunting happens mostly below that point, the ZS406 gives you a larger screen and wider reach.
TinySA Ultra+ ZS407 with 32GB
This ZS407 listing pairs the LCD with a built-in LNA and attenuator rated from -115dBm to -19dBm, which makes it useful for weak-signal work and for preventing overload when you are near strong sources. The 5000mAh rechargeable battery keeps it portable, and the 32GB card gives room for saved traces and data transfers. The frequency coverage is described in two ways in the listing: a broad 100kHz-7.3GHz top line and a separate note about standard and ultra mode ranges. That means you should plan around the mode you intend to use for the bands you measure. For someone who wants the LNA/attenuator feature set and a 32GB card, this is the direct ZS407 choice.
TinySA Ultra+ ZS407 RF Signal Generator
This ZS407 model shares the same named frequency range and LNA/attenuator spec as the other ZS407 listing, but appears as an RF signal generator with 32GB and a 5000mAh rechargeable battery. The product description mirrors the features of the wider ZS407 family, including the built-in LNA and attenuator. The one conflicting detail is the power wording: it lists '1 A batteries required (included)' alongside the built-in rechargeable battery, so the power setup reads differently depending on which part of the listing you check. If you are choosing between the two ZS407 listings, this one has a slightly different product name and the power wording conflict.
Final call
- For HF/VHF signal checks and a compact battery-powered analyzer, the Upgraded Tiny Spectrum Analyzer is the most direct match.
- For a larger screen and gigahertz range, the TinySA Ultra+ ZS406 is the middle option.
- For wideband work, either ZS407 listing fits; the choice between them comes down to the product title and the power accessory wording.
