Some LNA tests for HRIT/LRIT

  1. Airspy R2 directly on the attenuator output.
  2. Airspy R2 with LNA4ALL after attenuator output.
  3. Airspy R2 with SPF5189 after attenuator output.
View post on imgur.com
View post on imgur.com
View post on imgur.com
View post on imgur.com
  • The SPF5189 does work on L Band (you can see that clearly it amplified the weak signal)
  • It is comparable* to LNA4ALL
  • The guy that said it only works with VHF/UHF must have some bad unit or doesn’t know how to use it right.
  • Although the SPF5189 is much cheaper than LNA4ALL and does look to perform as good, the performance chip-wise is about the same, but keep in mind that since there are only Chinese boards you might get a bad manufacturer or seller that have bad quality LNAs.
  • There are several boards that use SPF5189 and the board design impact the performance about as much as the actual LNA chip. With LNA4ALL you will be sure that you have a good board, with SPF5189 you can buy the link I mention in the end of this post, but be warned that you might get a LNA that doesn’t match exactly what you want.
  • LNA4ALL has more features than this SPF5189 I bought. You can use Bias T, have onboard regulator (so flexible voltage range) and its smaller.
  • I notice that some cases the SPF board I have perform better, that may due the shield that comes with the board.
  • I use on my GOES setup since its cheaper than LNA4ALL and works good. Sadly for me that is in Brazil, the bad thing about LNA4ALL is the shipping cost (no cost on China devices).

--

--

--

Programming, Hacking, SDR, Satellites. Basically everything technology related. Everything is also posted on my site https://lucasteske.dev/

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

UV Light Cleaning and Sanitizing Robots for Hospitals

Huawei P30 Pro battery life

The Major Disruption that the Spatial Web will Bring About in Human Lives and Careers

People may die because Google’s bots removed the AdventureSafely app

A mountain biker being rescued after crashing

The offside algorithm

Echo (2nd Generation) — Smart speaker with Alexa and Dolby processing — Heather Gray Fabric

How to even better integrate your radio controlled shutters in your smart home

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Lucas Teske

Lucas Teske

Programming, Hacking, SDR, Satellites. Basically everything technology related. Everything is also posted on my site https://lucasteske.dev/

More from Medium

MyDevJourney002: a time comsuming task.

CS371p Spring 2022: Lisa Alexander

External Sensor ESP32

CS373 Spring 2022: Peter Ma: Final Entry