Low noise amplifier KU LNA 1090


I found a lna on ebay whit a gain of 30DB and a noise figure of 0.6 db.
Its produced by Kuhne and they are making realy good lna’s .
Only the price is a bit high i think 119 euro.
But then you got beast of a lna.
Its to much for me but maybe someone is looking for e good lna.
Here is the link



only a bit high???
€€€ £££ $$$ :disappointed: :open_mouth:


The Uputronics amp with ceramic filter has a slightly worse noise figure, 0.75db.

They also make amp.filters for NOAA/APT, APRS, AIS, UAT 978Mhz among others.


That’s only single stage though :slight_smile:

I like the rtl-sdr blog lna better i guess. Two SAW filters beats one even if you don’t need the extra gain.

Looked bigger on the pictures though. Somehow the SMA connector were not good reference for my brain.


I use cavity filters on all of my devices(plus the amps above). Too much noise in the area.


Every time you mention this filter, I remember the police detective in the Beavis & Butt-Head Do America movie.:rofl::rofl::rofl::rofl::rofl:


I don’t know about this particular LNA, but Kuhne has been around for a very long time. Their stuff is used by UHF/microwave hams.


Kuhne make really classy gear.
They know how to design and test, so you will get what you pay for.


Thats true its classy stuff.
The uptronics lna is only 15DB gain and kuhne 30DB.
And there is a bandpass filter in it, Frequency range 1070…1110 MHz
I have worked whit kuhne gear in the pasted and its always realy good stuff.


I see they also have the 2A version with an N-connector for both input and output.
I found some more information with pictures on this Russian site: http://adsbradar.ru/KU-LNA-1090-A-TM-Super-Low-Noise-Amplifier-for-Avionics
Well, all very nice but I fear that 30dB would probably overload the FA dongle, especially the flights at short distance