Wideband LNA AG203-63G
The Qorvo AG203-63G  is a cheap amplifier with (quite) low noise and very high bandwidth. The noise figure is roughly 3 dB, gain is around 20 dB and it works from DC to 6 GHz. It does not reuqire external matching, thus the schematic is very simple.
The PCB has a height of 0.6 mm, which is crucial (at least at higher frequencies) and it was ordered in China . The populated PCB was soldered into a tinplate filter housing FG1 of size 37x20x20 mm . To get the DC voltage into the housing a 1000 pF feed through capacitor DF 38  was used.
The fully build amplifier has been characterized using an DG8SAQ VNA . The input return loss is ca. 15 dB for 70 cm band (433 MHz) and ca. 21 dB for 2 m band (145 MHz). The data of the measurement can be found in the measurements folder. When you want to operate the LNA at a higher frequency, you should replace the coupling capacitors C1 and C3 and the feed inductor L1 with smaller values. See the datasheet  for details.