#313 Useful? Cheap Spectrum Analyzer LTDZ 35-4400M @AndreasSpiess
#313 Useful? Cheap Spectrum Analyzer LTDZ 35-4400M  @AndreasSpiess
Uploaded February 2020 | Updated September 2026, 3 weeks ago
Spectrum Analyzers are very useful if you work with radios. Unfortunately, they are very expensive. Until recently, when I saw this small device for around 50$. Unbelievable. But is it any good?

In this video, we will:
- See, what such a spectrum analyzer does and how it works
- Have a close look at this cheap device and compare its readings with a more expensive one
- See the difference between spectrum analyzers (SSA3032X), Vector Network analyzers (N1201SA), and SDR radios
I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, EEVblog, and others.

My HAM radio channel: youtube.com/channel/UCQwyP4Yd0-O49e05kMUJgQQ

Links:
Spectrum Analyzer LTDZ: bit.ly/2SPwXSz or https://s.click.aliexpress.com/e/_d7OcH6j or amzn.to/2LFBHJu
Much better product (TinySA ultra): https://s.click.aliexpress.com/e/_DdLFsHV
Software: http://dl4jal.eu/
SMA Attenuators: https://s.click.aliexpress.com/e/_d62dOtH
Vector Network Analyzer N1201SA: https://s.click.aliexpress.com/e/_dYynJMX
NanoVNA: https://s.click.aliexpress.com/e/_AevM5f
Different LTDZ sites: rudiswiki.de/wiki9/SpectrumAnalyzer_LTDZ#Software, http://alloza.eu/david/WordPress3/?page_id=478, epanorama.net/blog/2019/08/10/cheap-spectrum-analyzer-and-signal-generator/, vma-satellite.blogspot.com/2016/12/vma-simple-spectrum-analyser-download.html
SSA3032X Teardown: youtu.be/Fn7uaEVeOPk
VNA video: youtu.be/ZpKoLvqOWyc
SDR video: youtu.be/xQVm-YTKR9s
Transistor Tester video: youtu.be/4Xsg8lpP75s
The links above usually are affiliate links which support the channel (no additional cost for you).
Supporting Material and Blog Page: sensorsiot.org
Github: github.com/sensorsiot
My Patreon Page: patreon.com/AndreasSpiess
My Bitcoin address: 19FSmqbBzb5zsYB1d8Bq4KbxVmezToDNTV
If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel
For Banggood bit.ly/2jAQEf4
For AliExpress: bit.ly/2B0yTLL
For ebay.com: ebay.to/2DuYXBp

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#313 Useful? Cheap Spectrum Analyzer LTDZ 35-4400M

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