Supplying the amplifier separately allows GNSS receiver development, hardware-in-the-loop testing and irradiation campaigns to run against flight-representative hardware without committing a flight antenna, and lets the spacecraft designer choose where the LNA sits in the receive chain. Gain is 12 to 18 dB and customisable on request. Noise figure is 2.2 dB typical and 3.5 dB maximum, measured across the full operating temperature range rather than at ambient alone. The unit is 81 x 81 x 12 mm (3.2 x 3.2 x 0.47 in) at 110 g, with SMA female RF and a DC feedthrough. Designed for the harsh conditions of space, the sealed and vented housing suits LEO, MEO and GEO operation over a five-year mission life. Qualification is to NASA GEVS (GSFC-STD-7000) with random vibration to 14.1 GRMS across a -70 to +100 °C operating and storage range. Radiation tolerance is 500 krad(Si) TID with no destructive single event effects observed to 37 MeV-cm²/mg. CSA-L-003-RH is the matching antenna. Certain small-volume orders can ship within days rather than the months typically quoted for space-qualified hardware.