1pc RF Amplifier LNA​, Akozon Low Noise Amplifier LNA 0.05-4GHz NF=0.6dB RF FM HF VHF/UHF High Gain Low Noise SPDT RF Switch Amplifier Module

I bought this to use as a 1090MHz ADS-B preamp. It uses the SPF5189Z LNA and works as specified. The gain and P1dB varies significantly over frequency as shown in the plot I attached. This is good to know if you are planning to use it at a different frequency. P1dB/OIP3 is reduced at lower frequencies which could become a factor if you plan to use it in a high RF environment.This does not come with a shield or filtering even though it is stated it does in the description.P1dB (IN/OUT)50MHz -8/17.5 dBm500MHz 1.7/23 dBm1GHZ 6.5/22.8dBm2GHz 12.5/22.5 dBm

Hard to beat in terms of performance per dollar. Some of the soldering isn't the best but it hasn't affected performance vs those that I've corrected.

Noise Figure much higher then 0.6 db, gain at 2Ghz only 9 db

Seems well-built and worked out of the box. Gain & NF spec not verified but behavior is as expected.