SeeSii TinySA Ultra+ ZS407 7.3GHz Spectrum Analyzer: 2025 Upgraded 4 Inch HW V0.5.4 100kHz-7.3GHz Handheld Tiny Frequency Analyzer - 2-in-1 RF Signal Generator 100kHz to 900MHz MF/HF/VHF UHF
Condition: New
Buy Now, Pay Later
As low as
$43.48
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
20 left in stock
Arrives
Saturday, Jul 25
Recently Viewed
Size: TinySA Ultra+ ZS407
Features
- 2025 Upgraded Tinysa Ultra+ ZS407 Spectrum Analyzer: Supports an ultra-wide frequency range of 100kHz7.3GHz, delivering precise test data for RF system development, satellite alignment, and frequency verification. Features a 4.0-inch HD touchscreen (480320 resolution) with up to 450 scan points for clear visualization of complex spectrum data. The intuitive interface ensures ease of use, while ESD protection and the latest V0.5.4 hardware system provide professional and stable performance
- Broad Frequency Coverage: Supports 100kHz7.3GHz, ideal for 5G NR, Wi-Fi 6E, satellite communications, and higher wireless frequency bands. Calibrated up to 8GHz, it enables broader applications for high-frequency testing in lab environments. Standard mode covers 100kHz800MHz, while ULTRA mode extends to 6GHz. With 200Hz850kHz RBW, it ensures fast, efficient measurements, meeting high-precision needs like SSB two-tone intermodulation tests
- Robust Signal Generation: Functioning as both a spectrum analyzer and signal generator, it produces MF/HF/VHF sine waves from 100kHz-900MHz, UHF square waves from 800MHz-6.3GHz, and mixed signals from 4.4GHz-6.3GHz. Our spectrum analyzer antenna's versatility is perfect for RF system development, wireless communication debugging, and RF interference detection, aiding professionals in identifying and resolving frequency issues
- Convenient PC Control and Data Transfer: With USB and TinySA-APP connectivity, the device supports real-time data display and transfer, enhancing data management efficiency. This sdr spectrum analyzer includes a 32GB MicroSD card for easy data storage and sharing, catering to spectrum scanning, signal detection, and radio noise measurement needs
- 10-Hour Working Time: Powered by a 5000mAh battery, it offers up to 10 hours of continuous operation, ideal for field use by RF interference troubleshooters and satellite communication technicians. This signal analyzer's compact design makes it portable for various work environments, facilitating quick wireless signal detection and analysis for electronic and audio technicians
Brand: Seesii
Power Source: Battery Powered
Item dimensions L x W x H: 6.69 x 4.33 x 2.05 inches
Compatible Devices: Computers, Antennas
Number of Items: 1
Power Source: Battery Powered
Compatible Devices: Computers, Antennas
Item Dimensions: 6.69 x 4.33 x 2.05 inches
Brand Name: Seesii
Model: TinySA ULTRA+ZS407
Manufacturer: seesii
Part Number: ZS407
Included Components: 32GB Card
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Jul 25
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
![Power Probe Professional Electrical Test Kit - Red (PPROKIT01) Inc. Power Probe III w/PPDMM & Accessories [Measures Resistance, Current & Frequency]](https://m.media-amazon.com/images/I/61ARSgCPcXL._AC_US500_.jpg)
![[Upgraded] AURSINC NanoVNA-H Vector Network Analyzer 10KHz -1.5GHz Latest HW Version 3.6 | HF VHF UHF Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart](https://m.media-amazon.com/images/I/71mMIQqxWHL._AC_US500_.jpg)
Top Amazon Reviews
Size: TinySA Ultra+ ZS407
This review is for the SeeSii TinySA Ultra+ ZS407 7.3GHz Spectrum Analyzer Fist, be aware that there are many of these out there that are not genuine. Seesii is an authorized seller of the Tinysa and that is why I purchased it from Seesii. Go to Tiinysa and check out their info on this before purchasing. The Tinysa ultra is very practical and fun to use for those who are a bit tech savy. I use it to check the frequency of key fobs for cloning , and cable lines coming into apartments and TV antenna signals. Be careful as the input circuitry is delicate and precautions such as attenuators and a DC block are essential so as not to fry your Tinysa if you are checking your ISP's or external antenna signals. This thing is packed with features. Spectrum analyzers used to cost tens of thousands of dollars. They were big and heavy. This is amazing to have a hand held spectrum analyzer you can carry to locations at an affordable price. The ultra with a 4 inch screen is plenty sufficient. The 7.3 ghz is good for future prospects. Seesii support, if you need it, may not get back to your for a couple of days, but they will get back to you and they are extremely good. Highly recommend the Seesii 7.3 ghz spectrum analyzer, as it comes from a first hand seller and they have support if you need it.
...
show more
Reviewed in the United States on May 26, 2026 by Nipper
Size: TinySA Ultra+ ZS407
I love this device. The built-in self calibration and the big screen make this my favorite new instrument. I also love that you can save all settings as template, so easy to jump back and all markers and trace configurations are ready to make a measurement.
Reviewed in the United States on April 22, 2026 by M. Renschler
Size: TinySA Ultra+ ZS407
This compares very well to my much more expensive benchtop spectrum analyzer. It is very impressive to get frequency range up to 7.3 GHz for the low price. It is sensitive enough to see lots of radio stations with a tiny antenna. The touch screen interface works well, especially with the "guitar pick" they provide. I do wish they had a 7" screen version.
...
show more
Reviewed in the United States on February 6, 2026 by Wayne B.
Size: TinySA Ultra+ ZS407
Lots of videos on line to learn with.
Reviewed in the United States on March 8, 2026 by Experienced Kit Builder
Size: TinySA Ultra+ ZS407
The ZS-407 is an impressive upgrade and improvement over the previous model (which I owned 2 of). Although advertised to cover the 100kHz-7.3GHz RF spectrum range, I had no problem observing what I believe to be StarLink Space-to-Earth (Downlink) transmissions with the 10.7-12.7 GHz range (see accompanying photo of a portion of this range, a peak hold spectrograph which I ran for a while until it was completely filled out). The noise levels have noticeably been reduced. The battery life seems significantly improved, even with the display brightness set to the default 70%. The touch screen seems more responsive. It seems to work just as well without the tiny antenna attached as it does when attached. I won't elaborate on the all improvements, as the online wiki manual covers it all. Read the manual to learn of them all. While I have some practical use for this device, I'm finding it fun to play with as much as a video game. Instead of hunting enemy solders on a battle field, I'm hunting for their radio transmissions within the RF spectrum, LOL.
...
show more
Reviewed in the United States on April 19, 2025 Reviewed in the United States on April 19, 2025 by Michael E.
Size: TinySA Ultra+ ZS407
This is a nice simple basic SA, but the slow sweep speed is a definite limitation, particularly if you are looking for periodic transmissions. I wanted to check some telemetry systems that operated in the 2.4 GHz range, but I didn't know the exact frequency. The rep rate is fairly slow, so the slow sweep of the SA often does not capture the transmission. For things like spectral analysis of transmitters, it is a nice piece.
...
show more
Reviewed in the United States on May 14, 2026 by David P Telling Jr
Size: TinySA Ultra+ ZS407
Awesome
Reviewed in the United States on April 3, 2026 by Ardalan Hejazi
Size: TinySA Ultra+ ZS407
Simply the Best Mini ever!
Reviewed in the United States on March 28, 2026 by Joey